ASME B16.

11-2011
(Revision of ASME B16.11-2009)

Forged Fittings,
Socket-Welding
and Threaded

A N A M E R I C A N N AT I O N A L STA N DA R D

Copyright c 2012 by the American Society of Mechanical Engineers.

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 Copyright c 2012 by the American Society of Mechanical Engineers.
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 ASME B16.11-2011
(Revision of ASME B16.11-2009)

Forged Fittings,
Socket-Welding
and Threaded
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A N A M E R I C A N N AT I O N A L S TA N D A R D
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Three Park Avenue • New York, NY • 10016 USA

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 Date of Issuance: January 30, 2012

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 CONTENTS

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Correspondence With the B16 Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

1 Scope and General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 Pressure Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3 Size and Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5 Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7 Additional Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

8 Proof Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figures
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1 Method of Designating Outlets of Reducing Tees and Crosses . . . . . . . . . . . . . . . . . 8

2 Welding Gap and Minimum Flat Dimensions for Socket-Welding Fittings . . . . . . 9

Tables
1 Socket-Welding Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Forged Threaded Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Forged Threaded Fittings — Street Elbows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Threaded Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 Plugs and Bushings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6 Types of Fittings by Class Designation and NPS Size Range . . . . . . . . . . . . . . . . . . . 7
7 Correlation of Fittings Class With Schedule Number or Wall Designation of
Pipe for Calculation of Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
8 Nominal Wall Thickness of Schedule 160 and Double Extra Strong Pipe . . . . . . . . 7

Mandatory Appendices
I Dimensions of Fittings in U.S. Customary Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
II References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Nonmandatory Appendix
A Quality System Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

iii
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 FOREWORD

The Sectional Committee on the Standardization of Pipe Flanges and Fittings, B16, organized
in 1920 under the procedure of the American Standards Association (ASA), appointed a subgroup
of Subcommittee 3 (now Subcommittee F) to initiate the standardization of welding fittings in
May 1937. The first meeting of this group was held later that month, and at its meeting in
December 1938, in New York, it was agreed to undertake the standardization of dimensions of
socket-welding fittings and to refer this project to a new drafting subgroup. One of the most
important dimensions of this type of fitting requiring standardization was considered to be the
dimension from the centerline of the fitting to the bottom of the socket, since from the standpoint
of the designing engineer, this dimension governs the location of adjacent pipe with reference
to the entire piping layout. Another important item for consideration was the welding fillet
dimensions.
The drafting subgroup held meetings in Chicago, Detroit, and New York in March 1939 and
May and October 1940, respectively, and at the last named meeting, the completed draft of the
proposed standard was discussed, and further revisions were suggested. When applied to the
September 1940 draft, these changes produced the May 1941 draft, which was prepared for
distribution to industry for criticism and comment.
This distribution resulted in a number of helpful comments. The members of the subgroup
agreed by mail that many of the changes suggested should be incorporated in the revised draft
(December 1941). Progress on the approval of the standard was delayed by the World War II,
after which, a few more changes were added to make the proposal acceptable to all concerned.
The revised draft (April 1946) was then submitted to the members of the sectional committee
for letter ballot vote.
Following the approval of the sectional committee, the proposed standard was next approved
by the sponsor bodies and presented to the ASA with recommendation for approval as an
American Standard. This designation was given on December 9, 1946.
In 1960, it was agreed that the standard needed a complete revision and simultaneously that
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it should be expanded to cover threaded fittings and plugs, then covered by MSS SP-49 and
SP-50. A Task Force worked diligently for four years before arriving at a draft that was acceptable.
They also found that ratings were outdated and eliminated the 4,000-lb classes of threaded fittings,
assigned pressure–temperature ratings for a number of materials, and converted the socket-weld
fitting ratings to 3,000 and 6,000 lb. Following approval by the Sectional Committee and Sponsors,
ASA approval was granted on January 28, 1966.
Following designation changes of ASA to ANSI and Sectional Committee to Standards
Committee, Subcommittee 6 began consideration of changes in 1969. Early in 1972, changes in
the pressure class designations, materials, and clarification of wording were agreed upon and
submitted for approval. This was granted on June 20, 1973.
The work of development of the 1980 edition of B16.11 began in 1975 when the committee
began consideration of comments and proposals for change that were received. The development
procedure was arduous in that a number of ballots were taken that elicited many additional
comments and counterproposals. The major changes included an expanded scope for better
definition, requirements for conformance marking, a Nonmandatory Annex with provisions for
proof or burst testing, and the inclusion of metric equivalents. Following approval by the Standards
Committee and Co-Secretariat, final approval by ANSI was granted on October 6, 1980.
In 1982, American National Standards Committee B16 was reorganized as an ASME Committee
operating under procedures accredited by ANSI. The 1991 edition of the standard, retitled “Forged
Fittings, Socket-Welding and Threaded,” incorporated forging material listed in Table 1 of
ASME B16.34-1988, including Group 3 material that was not previously covered in B16.11. The
1991 edition established U.S. Customary units as the standard. Other clarifying and editorial
revisions were made to improve the text. Following approval by the Standards Committee and
ASME, final approval by ANSI was granted on March 4, 1991.

iv
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 In 1996, metric dimensions were added as an independent but equal standard to the inch units.
Following approval by the Standards Committee and ASME, this revision to the 1991 edition of
this Standard was approved as an American National Standard by ANSI on December 16, 1996,
with the new designation ASME B16.11-1996.
In 2000, the Standards Committee, ASME, and ANSI approved an addenda to this Standard
to remove partial compliance fittings and nonstandard material requirements. Due to an ASME
policy change concerning the publishing of addenda, the intended addenda changes were incorpo-
rated into the 2001 edition.
Threaded end street elbow requirements were incorporated into the 2004 edition. Following
approval by the Standards Committee and ASME, the revision to the 2001 edition was approved
as an American National Standard by ANSI on September 30, 2005 with the designation
ASME B16.11-2005.
A number of technical revisions were made along with format and reference revisions, such
as material marking requirements. Following approval by the Standards Committee and ASME,
the revision to the 2005 edition was approved as an American National Standard by ANSI on
July 9, 2009 with the designation ASME B16.11-2009.
This revision was approved by the American National Standards Institute on December 2, 2011.
Suggestions for improvement of this Standard are welcome. They should be addressed to the
Secretary, B16 Standards Committee, The American Society of Mechanical Engineers, Three Park
Avenue, New York, NY 10016.
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 ASME B16 COMMITTEE
Standardization of Valves,
Flanges, Fittings, and Gaskets
(The following is the roster of the Committee at the time of approval of this Standard.)

STANDARDS COMMITTEE OFFICERS

W. B. Bedesem, Chair
G. A. Jolly, Vice Chair
D. R. Sharp, Secretary

STANDARDS COMMITTEE PERSONNEL

A. Appleton, Alloy Stainless Products Co., Inc. G. A. Jolly, Vogt Valves/Flowserve Corp.
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R. W. Barnes, Anric Enterprises, Inc. M. Katcher, Haynes International

W. B. Bedesem, Consultant W. N. McLean, B&L Engineering
R. M. Bojarczuk, ExxonMobil Research and Engineering Co. T. A. McMahon, Emerson Process Management
M. L. Nayyar, Bechtel Power Corp.
D. F. Buccicone, Elkhart Products Corp.
W. H. Patrick, The Dow Chemical Co.
A. M. Cheta, Royal Dutch Shell
R. A. Schmidt, Canadoil
M. A. Clark, Nibco, Inc. D. R. Sharp, The American Society of Mechanical Engineers
G. A. Cuccio, Capitol Manufacturing Co. H. R. Sonderegger, Fluoroseal, Inc.
C. E. Davila, Crane Energy W. M. Stephan, Flexitallic, L.P.
D. R. Frikken, Becht Engineering Co. F. R. Volgstadt, Volgstadt and Associates, Inc.
R. P. Griffiths, U.S. Coast Guard D. A. Williams, Southern Company Generation

SUBCOMMITTEE F — STEEL THREADED AND WELDING FITTINGS

G. A. Cuccio, Chair, Capitol Manufacturing Co. D. R. Frikken, Becht Engineering Co.
G. A. Jolly, Vice Chair, Vogt Valves/Flowserve Corp. C. J. Lafferty, U.S. Drop Forge Co.
D. R. Sharp, Secretary, The American Society of Mechanical B. G. Fabian, Alternate, Pennsylvania Machine Works
Engineers D. H. Monroe, Consultant
A. Appleton, Alloy Stainless Products Co., Inc. R. A. Schmidt, Canadoil
W. J. Birkholz, Flowline Division, Markovitz Enterprises, Inc. J. P. Tucker, Flowserve Corp.
K. W. Doughty, Shaw Alloy Piping Products, Inc. G. T. Walden, Frischkorn, Inc.
J. P. Ellenberger, Consultant M. M. Zaidi, Jacobs Engineering Group, Inc.

vi
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 CORRESPONDENCE WITH THE B16 COMMITTEE

General. ASME Standards are developed and maintained with the intent to represent the
consensus of concerned interests. As such, users of this Standard may interact with the Committee
by requesting interpretations, proposing revisions, and attending Committee meetings. Corre-
spondence should be addressed to:
Secretary, B16 Standards Committee
The American Society of Mechanical Engineers
Three Park Avenue
New York, NY 10016-5990

As an alternative, inquiries may be submitted via email to: SecretaryB16@asme.org.

Proposing Revisions. Revisions are made periodically to the Standard to incorporate changes
that appear necessary or desirable, as demonstrated by the experience gained from the application
of the Standard. Approved revisions will be published periodically.
The Committee welcomes proposals for revisions to this Standard. Such proposals should be
as specific as possible, citing the paragraph number(s), the proposed wording, and a detailed
description of the reasons for the proposal, including any pertinent documentation.
Proposing a Case. Cases may be issued for the purpose of providing alternative rules when
justified, to permit early implementation of an approved revision when the need is urgent, or to
provide rules not covered by existing provisions. Cases are effective immediately upon
ASME approval and shall be posted on the ASME Committee Web page.
Requests for Cases shall provide a Statement of Need and Background Information. The request
should identify the Standard, the paragraph, figure or table number(s), and be written as a
Question and Reply in the same format as existing Cases. Requests for Cases should also indicate
the applicable edition(s) of the Standard to which the proposed Case applies.
Interpretations. Upon request, the B16 Committee will render an interpretation of any require-
ment of the Standard. Interpretations can only be rendered in response to a written request sent
to the Secretary of the B16 Standards Committee.
The request for interpretation should be clear and unambiguous. It is further recommended
that the inquirer submit his/her request in the following format:
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Subject: Cite the applicable paragraph number(s) and the topic of the inquiry.
Edition: Cite the applicable edition of the Standard for which the interpretation is
being requested.
Question: Phrase the question as a request for an interpretation of a specific requirement
suitable for general understanding and use, not as a request for an approval
of a proprietary design or situation. The inquirer may also include any plans
or drawings that are necessary to explain the question; however, they should
not contain proprietary names or information.

Requests that are not in this format will be rewritten in this format by the Committee prior
to being answered, which may inadvertently change the intent of the original request.
ASME procedures provide for reconsideration of any interpretation when or if additional
information that might affect an interpretation is available. Further, persons aggrieved by an
interpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not
“approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity.
Attending Committee Meetings. The B16 Standards Committee regularly holds meetings, which
are open to the public. Persons wishing to attend any meeting should contact the Secretary of
the B16 Standards Committee.

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 ASME B16.11-2011
SUMMARY OF CHANGES

Following approval by the ASME B16 Committee and ASME, and after public review,
ASME B16.11-2011 was approved by the American National Standards Institute on
December 2, 2011.

ASME B16.11-2011 includes the following changes identified by a margin note, (11).
Page Location Change
6 Table 5 Fourth and seventh columns revised,
Note (2) added
9 6.3.3 Revised
6.5 Revised
16 Table I-5 Note (2) added

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 ASME B16.11-2011

FORGED FITTINGS, SOCKET-WELDING AND THREADED

1 SCOPE AND GENERAL 1.2.3 Service Conditions. Criteria for selection of

fitting types and materials suitable for particular fluid
1.1 Scope service are not within the scope of this Standard.
This Standard covers ratings, dimensions, tolerances, 1.2.4 Quality Systems. Nonmandatory require-
marking, and material requirements for forged fittings, ments relating to the product manufacturer’s quality
both socket-welding and threaded, as illustrated in system program are described in Nonmandatory
Tables 1 through 5 and Tables I-1 through I-5, inclusive. Appendix A.
1.1.1 Fitting Types/Configuration. Types of fittings 1.2.5 Relevant Units. This Standard states values
covered by this Standard are shown in Table 6, by class in both SI (Metric) and U.S. Customary units. These
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and size range. Fittings shown in Tables 1 through 5 systems of units are to be regarded separately as stan-
and Tables I-1 through I-5 may also be made with combi- dard. Within the text, the U.S. Customary units are
nations of socket-welding and threaded ends. shown in parentheses or in separate tables that appear
in Mandatory Appendix I. The values stated in each
1.1.2 Special Fittings. Fittings with special dimen-
system are not exact equivalents; therefore, it is required
sions, threads, or counterbores may be made by
that each system be used independently of the other.
agreement between the manufacturer and purchaser.
Combining values from the two systems constitutes
When such fittings meet all other stipulations of this
nonconformance with the Standard.
Standard, they shall be considered in compliance there-
Tables 1 through 5 show fittings dimensional require-
with, provided they are appropriately marked (see
ments in millimeters. Tables I-1 through I-5 show the
section 4).
dimensional requirements for inch dimensioned fittings.
1.1.3 Welding. Installation welding requirements
are not within the scope of this Standard. Installation 2 PRESSURE RATINGS
welding shall be in accordance with the applicable pip-
ing Code or regulation covering the piping system into 2.1 General
which the fittings are installed. Fittings under this Standard shall be designated as
Class 2000, 3000, and 6000 for threaded end fittings and
1.2 General Class 3000, 6000, and 9000 for socket-weld end fittings.

1.2.1 Referenced Standards. Standards and specifi- 2.1.1 Basis of Rating. The schedule of pipe corres-
ponding to each Class designation of fitting for rating

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cations adopted by reference in this Standard are shown
in Mandatory Appendix II. It is not considered practical purposes is shown in Table 7. Design temperature and
to identify the specific edition of each standard and other service conditions shall be limited as provided by
specification in the individual references. Instead, the the applicable piping code or regulation for the material
specific edition reference is identified in Mandatory of construction of the fitting. Within these limits, the
Appendix II. A fitting made in conformance and con- minimum wall thickness for pipe to be used with a
forming to this Standard, in all other respects, will be Table 7 Class designated fitting shall be computed based
considered to be in conformance to the Standard, even on appropriate size straight seamless pipe of equivalent
though the edition reference may be changed in a subse- material as the fitting (as shown by comparison of com-
quent revision of the Standard. position and mechanical properties in the respective
material specifications). The minimum pipe wall thick-
1.2.2 Codes and Regulations. A fitting used under ness calculation shall include pressure design and all
the jurisdiction of the ASME Boiler and Pressure Vessel applicable additional allowances (e.g., erosion, corro-
Code, the ASME Code for Pressure Piping, or a govern- sion, and thread depth for threaded pipe). The minimum
mental regulation is subject to any limitation of that code wall thickness for selected pipe, considering manufac-
or regulation. This includes any maximum temperature turing minus wall thickness tolerance (typically 12.5%),
limitation, rule governing the use of a material at low shall not be less than the minimum wall calculation. The
temperature, or provisions for operation at a pressure fitting is suitable for the application if the wall thickness
exceeding the ratings in this Standard. of the selected pipe equals or is less than the

1
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Table 1 Socket-Welding Fittings

Copyright ASME International

B C
B B
D C B C C

Provided by IHS under license with ASME

A C A A D D
C D
G C G K
C G J
D E J
D B B
A J F
A A

No reproduction or networking permitted without license from IHS

J J J J B C
C

90-deg Elbow Cross Tee 45-deg Elbow Coupling Half-Coupling Cap

Socket Wall Thickness, C Center-to-Bottom of Socket, A

Bore Diameter of
[Note (2)] Body Wall, G
Socket Fittings, D 90-deg Elbows, End Wall Thickness,
Laying Lengths
Bore [Note (1)] Class Designation Class Designation Min. Tees, and Crosses 45-deg Elbows Kmin
Diameter, Depth of Half
Class Designation 3000 6000 9000 3000 6000 9000 Class Designation Tolerances, ± Class Designation
Nominal B Socket, Couplings, Couplings,
Pipe Size [Note (1)] 3000 6000 9000 Avg. Min. Avg. Min. Avg. Min. Min. Min. Min. J 3000 6000 9000 3000 6000 9000 E F A E F 3000 6000 9000

1
⁄8 11.2 7.6 4.8 ... 3.18 3.18 3.96 3.43 ... ... 2.41 3.15 ... 9.5 11.0 11.0 ... 8.0 8.0 ... 6.5 16.0 1.0 1.5 1.0 4.8 6.4 ...
10.8 6.1 3.2 ...
1
14.6 10.0 7.1 ... 3.78 3.30 4.60 4.01 ... ... 3.02 3.68 ... 9.5 11.0 13.5 ... 8.0 8.0 ... 6.5 16.0 1.0 1.5 1.0 4.8 6.4 ...

2
⁄4
14.2 8.5 5.6 ...
3
18.0 13.3 9.9 ... 4.01 3.50 5.03 4.37 ... ... 3.20 4.01 ... 9.5 13.5 15.5 ... 8.0 11.0 ... 6.5 17.5 1.5 3.0 1.5 4.8 6.4 ...

No reproduction may be made of this material

⁄8

Not for
17.6 11.8 8.4 ...
ASME B16.11-2011

1
⁄2 22.2 16.6 12.5 7.2 4.67 4.09 5.97 5.18 9.35 8.18 3.73 4.78 7.47 9.5 15.5 19.0 25.5 11.0 12.5 15.5 9.5 22.5 1.5 3.0 1.5 6.4 7.9 11.2

Resale
21.8 15.0 11.0 5.6

without
3
⁄4 27.6 21.7 16.3 11.8 4.90 4.27 6.96 6.04 9.78 8.56 3.91 5.56 7.82 12.5 19.0 22.5 28.5 13.0 14.0 19.0 9.5 24.0 1.5 3.0 1.5 6.4 7.9 12.7
27.2 20.2 14.8 10.3
1 34.3 27.4 21.5 16.0 5.69 4.98 7.92 6.93 11.38 9.96 4.55 6.35 9.09 12.5 22.5 27.0 32.0 14.0 17.5 20.5 12.5 28.5 2.0 4.0 2.0 9.6 11.2 14.2
33.9 25.9 19.9 14.4
1
1 ⁄4 43.1 35.8 30.2 23.5 6.07 5.28 7.92 6.93 12.14 10.62 4.85 6.35 9.70 12.5 27.0 32.0 35.0 17.5 20.5 22.5 12.5 30.0 2.0 4.0 2.0 9.6 11.2 14.2
42.7 34.3 28.7 22.0
1
1 ⁄2 49.2 41.6 34.7 28.7 6.35 5.54 8.92 7.80 12.70 11.12 5.08 7.14 10.15 12.5 32.0 38.0 38.0 20.5 25.5 25.5 12.5 32.0 2.0 4.0 2.0 11.2 12.7 15.7
48.8 40.1 33.2 27.2

Copyright c 2012 by the American Society of Mechanical Engineers.

2 61.7 53.3 43.6 38.9 6.93 6.04 10.92 9.50 13.84 12.12 5.54 8.74 11.07 16.0 38.0 41.0 54.0 25.5 28.5 28.5 19.0 41.0 2.0 4.0 2.0 12.7 15.7 19.0
61.2 51.7 42.1 37.4
1

written consent of ASME.

2 ⁄2 74.4 64.2 ... ... 8.76 7.67 ... ... ... ... 7.01 ... ... 16.0 41.0 ... ... 28.5 ... ... 19.0 43.0 2.5 5.0 2.5 15.7 19.0 ...
73.9 61.2 ... ...
3 90.3 79.4 ... ... 9.52 8.30 ... ... ... ... 7.62 ... ... 16.0 57.0 ... ... 32.0 ... ... 19.0 44.5 2.5 5.0 2.5 19.0 22.4 ...
89.8 76.4 ... ...
4 115.7 103.8 ... ... 10.69 9.35 ... ... ... ... 8.56 ... ... 19.0 66.5 ... ... 41.0 ... ... 19.0 48.0 2.5 5.0 2.5 22.4 28.4 ...
115.2 100.7 ... ...

GENERAL NOTE: Dimensions are in millimeters.

NOTES:
(1) Upper and lower values for each size are the respective maximum and minimum dimensions.
(2) Average of socket wall thickness around periphery shall not be less than listed values. The minimum values are permitted in localized areas.

--`,,```,,,,````-`-`,,`,,`,`,,`---
 ASME B16.11-2011

Table 2 Forged Threaded Fittings

A
A A C
G

H H H
A A C
L2 B

H H H H

90-deg Elbow Tee Cross 45-deg Elbow

Minimum
Length of
Center-to-End Elbows, Center-to-End Outside Diameter of Minimum Wall Thread
Nominal Tees, and Crosses, A 45-deg Elbow, C Band, H Thickness, G [Note (1)]
Pipe Size 2000 3000 6000 2000 3000 6000 2000 3000 6000 2000 3000 6000 B L2
1
⁄8 21 21 25 17 17 19 22 22 25 3.18 3.18 6.35 6.4 6.7
1
⁄4 21 25 28 17 19 22 22 25 33 3.18 3.30 6.60 8.1 10.2
3
⁄8 25 28 33 19 22 25 25 33 38 3.18 3.51 6.98 9.1 10.4
1
⁄2 28 33 38 22 25 28 33 38 46 3.18 4.09 8.15 10.9 13.6

3
⁄4 33 38 44 25 28 33 38 46 56 3.18 4.32 8.53 12.7 13.9

--`,,```,,,,````-`-`,,`,,`,`,,`---
1 38 44 51 28 33 35 46 56 62 3.68 4.98 9.93 14.7 17.3
11⁄4 44 51 60 33 35 43 56 62 75 3.89 5.28 10.59 17.0 18.0
11⁄2 51 60 64 35 43 44 62 75 84 4.01 5.56 11.07 17.8 18.4

2 60 64 83 43 44 52 75 84 102 4.27 7.14 12.09 19.0 19.2

21⁄2 76 83 95 52 52 64 92 102 121 5.61 7.65 15.29 23.6 28.9
3 86 95 106 64 64 79 109 121 146 5.99 8.84 16.64 25.9 30.5
4 106 114 114 79 79 79 146 152 152 6.55 11.18 18.67 27.7 33.0

GENERAL NOTE: Dimensions are in millimeters.

NOTE:
(1) Dimension B is minimum length of perfect thread. The length of useful thread (B plus threads with fully formed roots and flat crests)
shall not be less than L2 (effective length of external thread) required by American National Standard for Pipe Threads (ASME B1.20.1;
see para. 6.3).
//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$

3
Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction may be made of this material
No reproduction or networking permitted without license from IHS without
Not for Resale written consent of ASME.
 //^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\

--`,,```,,,,````

Copyright ASME International

Table 3 Forged Threaded Fittings — Street Elbows

Provided by IHS under license with ASME

H

L2 B

No reproduction or networking permitted without license from IHS

L A
G1

G2
J

Center-to-Female Outside Diameter of

End Street Ells, Center-to-Male Band, H Minimum Wall Minimum Wall
Minimum Length
A [Note (1)] End Street Ells, J [Note (2)] Thickness, G1 Thickness, G2 [Note (3)] Minimum
Internal Thread

4
Nominal Length
Class Designation Class Designation Class Designation Class Designation Class Designation [Note (4)]
Pipe Size, Male Thread,

No reproduction may be made of this material

Not for
NPS 3000 6000 3000 6000 3000 6000 3000 6000 3000 6000 B L2 L
ASME B16.11-2011

Resale
⁄8 19 22 25 32 19 25 3.18 5.08 2.74 4.22 6.4 6.7 10

without
1
⁄4 22 25 32 38 25 32 3.30 5.66 3.22 5.28 8.1 10.2 11
3
⁄8 25 28 38 41 32 38 3.51 6.98 3.50 5.59 9.1 10.4 13
1
⁄2 28 35 41 48 38 44 4.09 8.15 4.16 6.53 10.9 13.6 14
3
⁄4 35 44 48 57 44 51 4.32 8.53 4.88 6.86 12.7 13.9 16
1 44 51 57 66 51 62 4.98 9.93 5.56 7.95 14.7 17.3 19
11⁄4 51 54 66 71 62 70 5.28 10.59 5.56 8.48 17.0 18.0 21
11⁄2 54 64 71 84 70 84 5.56 11.07 6.25 8.89 17.8 18.4 21
2 64 83 84 105 84 102 7.14 12.09 7.64 9.70 19.0 19.2 22

Copyright c 2012 by the American Society of Mechanical Engineers.

GENERAL NOTE: Dimensions are in millimeters.

written consent of ASME.

NOTES:
(1) Dimension A of Table 2 for the appropriate fitting size may also be used at the option of the manufacturer.
(2) Dimension H of Table 2 for the appropriate fitting size may also be used at the option of the manufacturer.
(3) Wall thickness before threading.
(4) Dimension B is minimum length of perfect thread. The length of useful thread (B plus threads with fully formed roots and flat crests) shall not be less than L2 (effective length of
external thread) required by American National Standard for Pipe Threads (ASME B1.20.1; see para. 6.3).
 ASME B16.11-2011

Table 4 Threaded Fittings

W P
W L2
2 L2 B
B
L2
B
D
D
D

--`,,```,,,,````-`-`,,`,,`,`,,`---
Coupling Half-Coupling Cap

Minimum Length
Nominal End-to-End End-to-End Outside Minimum End of Thread
Couplings, W Caps, P Diameter, D Wall Thickness, G [Note (1)]
Pipe
Size 3000 and 6000 3000 6000 3000 6000 3000 6000 B L2
1
⁄8 32 19 ... 16 22 4.8 ... 6.4 6.7
1
⁄4 35 25 27 19 25 4.8 6.4 8.1 10.2
3
⁄8 38 25 27 22 32 4.8 6.4 9.1 10.4
1
⁄2 48 32 33 28 38 6.4 7.9 10.9 13.6

3
⁄4 51 37 38 35 44 6.4 7.9 12.7 13.9
1 60 41 43 44 57 9.7 11.2 14.7 17.3
11⁄4 67 44 46 57 64 9.7 11.2 17.0 18.0
11⁄2 79 44 48 64 76 11.2 12.7 17.8 18.4

2 86 48 51 76 92 12.7 15.7 19.0 19.2

21⁄2 92 60 64 92 108 15.7 19.0 23.6 28.9
3 108 65 68 108 127 19.0 22.4 25.9 30.5
4 121 68 75 140 159 22.4 28.4 27.7 33.0

GENERAL NOTES:
(a) Dimensions are in millimeters.
(b) Class 2000 and NPS 1⁄8 Class 6000 couplings, half couplings, and caps are not included in this Standard.
(c) The wall thickness away from the threaded ends shall meet the minimum wall thickness requirements of Table 2 for the appropriate
NPS and Class Designation fitting.
NOTE:
(1) Dimension B is minimum length of perfect thread. The length of useful thread (B plus thread with fully formed roots and flat crests)
shall not be less than L2 (effective length of external thread) required by American National Standard for Pipe Threads (ASME B1.20.1;
see para. 6.3).
//^:^^#^~^^"~~:~"~$$"~$^"#:*~~

5
Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction may be made of this material
No reproduction or networking permitted without license from IHS without
Not for Resale written consent of ASME.
 ASME B16.11-2011

(11) Table 5 Plugs and Bushings

F F

--`,,```,,,,````-`-`,,`,,`,`,,`---
C

B H G
D
A A
A A
A

Square Head Hex Head Round Head Hex Head Flush

Plug Plug Plug Bushing Bushing
[Note (1)]

Round Head Plugs Hex Plugs and Bushings

Square Head Plugs
Minimum Hex
Minimum Minimum Nominal Nominal Width
Nominal Minimum Square Width Flats, C Head Minimum Flats, F Height
Pipe Size Length, A Height, B [Note (2)] Diameter, E Length, D [Note (2)] Bushing, G Plug, H
1
⁄8 10 6 7.15 10 35 11.11 ... 6
1
⁄4 11 6 9.55 14 41 15.88 3 6
3
⁄8 13 8 11.11 18 41 17.46 4 8
1
⁄2 14 10 14.29 21 44 22.23 5 8

3
⁄4 16 11 15.88 27 44 26.99 6 10
1 19 13 20.64 33 51 34.93 6 10
11⁄4 21 14 23.81 43 51 44.45 7 14
11⁄2 21 16 28.58 48 51 50.80 8 16

2 22 18 53.34 60 64 63.50 9 18
21⁄2 27 19 38.10 73 70 76.20 10 19
3 28 21 42.86 89 70 88.90 10 21
4 32 25 63.50 114 76 117.48 13 25

GENERAL NOTE: Dimensions are in millimeters.

NOTES:
(1) Cautionary Note Regarding Hex Bushings: Hex head bushings of one-size reduction should not be used in services where they might
be subject to harmful loads and forces other than internal pressures.
(2) Manufacturer’s applied tolerance shall ensure dimension will fit U.S. Customary tooling.
//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~

6
Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction may be made of this material
No reproduction or networking permitted without license from IHS without
Not for Resale written consent of ASME.
 ASME B16.11-2011

Table 6 Types of Fittings by Class Designation and NPS Size Range

Socket-Welding Threaded
Class Designation Class Designation
Description 3000 6000 9000 2000 3000 6000
1 1 1 1 1 1
45-deg, 90-deg elbows, ⁄8–4 ⁄8–2 ⁄2–2 ⁄8–4 ⁄8–4 ⁄8–4
1 1 1 1 1 1
tees, crosses, ⁄8–4 ⁄8–2 ⁄2–2 ⁄8–4 ⁄8–4 ⁄8–4
1 1 1 1 1
couplings, half-couplings, ⁄8–4 ⁄8–2 ⁄2–2 ... ⁄8–4 ⁄8–4
1 1 1 1 1
and caps ⁄8–4 ⁄8–2 ⁄2–2 ... ⁄8–4 ⁄4–4
1 1
Street elbows ... ... ... ... ⁄8–2 ⁄8–2
1 1 1
Square, hex, round plug, ... ... ... ⁄8–4 [Note (1)] ⁄8–4 [Note (1)] ⁄8–4 [Note (1)]
1 1 1
hex, and flush bushing ... ... ... ⁄8–4 [Note (1)] ⁄8–4 [Note (1)] ⁄8–4 [Note (1)]

NOTE:
(1) Plugs and bushings are not identified by class designation. They may be used for ratings up to
Class 6000 designation.

ASME B36.10M Schedule No. or Wall Designation pipe Table 7 Correlation of Fittings Class With
wall thickness correlated with the fitting in Table 7 [see Schedule Number or Wall Designation of Pipe for
Note (1) in Table 7]. Calculation of Ratings
2.1.2 Nonstandard Pipe Wall Thickness. Since Pipe Used for Rating Basis
Class
ASME B36.10M does not include Schedule 160 nor Designation [Note (1)]
Double Extra Strong thickness for NPS 1⁄8, 1⁄4, and 3⁄8, the of Fitting Type of Fitting Schedule No. Wall Designation
values in Table 8 shall be used as the nominal wall
thicknesses of the pipe for rating purposes. 2000 Threaded 80 XS
3000 Threaded 160 ...
2.1.3 Combination End Fittings. The Class designa- 6000 Threaded ... XXS
tion for fittings made with combinations of socket-
welding and threaded ends shall be based on the end 3000 Socket-welding 80 XS
configuration that has the lowest rating from Table 7. 6000 Socket-welding 160 ...
9000 Socket-welding ... XXS
2.2 Pressure Test Capability
Pressure testing is not required by this Standard, but NOTE:
the fittings shall be capable of withstanding a hydro- (1) This Table is not intended to restrict the use of pipe of thinner
static test pressure required by the applicable piping or thicker wall with fittings. Pipe actually used may be thinner
code for seamless pipe of material equivalent to the or thicker in nominal wall than that shown in Table 7. When
thinner pipe is used, its strength may govern the rating. When
fitting forging and of the schedule or wall thickness
thicker pipe is used (e.g., for mechanical strength), the
correlated with the fitting Class and end connection of strength of the fitting governs the rating.
Table 7.

3 SIZE AND TYPE Table 8 Nominal Wall Thickness of Schedule 160

3.1 General and Double Extra Strong Pipe
NPS, followed by a dimensionless number, is the des-
Schedule 160 XXS
ignation for nominal fitting size. NPS is related to the
reference nominal diameter, DN, used in international NPS mm in. mm in.
standards. The relationship is typically as follows: 1
⁄8 3.15 0.124 4.83 0.190
NPS DN 1
⁄4 3.68 0.145 6.05 0.238
3
1 ⁄8 4.01 0.158 6.40 0.252
⁄8 6
1
⁄4 8
3
⁄8 10
1
⁄2 15
3
⁄4 20 3.2 Reducing Fitting Size
1 25 In the case of reducing tees and crosses, the size of
11⁄4 32 the largest run opening shall be given first, followed by
11⁄2 40
the size of the opening at the opposite end of the run.
2 50
21⁄2 65 Where the fitting is a tee, the size of the branch is given
3 80 last. Where the fitting is a cross, the largest side-outlet
4 100 is the third dimension given, followed by the opening

7
--`,,```,,,,````-`-`,,`,,`,`,,`---

Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction may be made of this material
No reproduction or networking permitted without license from IHS without
Not for Resale written consent of ASME.
//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\
 ASME B16.11-2011

Fig. 1 Method of Designating Outlets of Reducing (e) Size. The nominal pipe size related to the end
Tees and Crosses connections.
3/ 3/ 4.1.2 Omission of Markings. Where size and shape
4 4
of fittings do not permit all of the above markings, they
may be omitted in the reverse order given above.
11/4 11/4 1/
2

5 MATERIAL
11/2 11/2
5.1 Standard Materials
11/2 x 3/4 x 11/4 11/2 x 3/4 x 11/4 x 1/2 Fittings shall be made of materials consisting of forg-
ings, bar, seamless pipe, or seamless tubular products.
Tee Cross These materials shall conform to the requirements for
GENERAL NOTE: See para. 3.2. the WP seamless construction materials of ASTM Fitting
Specifications A234, A403, A420, A815, or B366 or ASTM
Forging Specifications A105, A182, A350, B462, or B564.
Tees, elbows, and crosses shall not be made from bar
opposite. The line sketches, Fig. 1, illustrate how the stock.
reducing fittings are read.
--`,,```,,,,````-`-`,,`,,`,`,,`---

6 DIMENSIONS
4 MARKING
6.1 General
4.1 General
Unless otherwise noted, the dimensions without toler-
Each fitting shall be permanently marked with the ances for socket-welding fittings given in Tables 1 and
required identification by raised lettering and/or stamp- I-1 and the dimensions without tolerances for threaded
ing, electro-etching, or vibro-tool marking on the collar fittings given in Tables 2 through 5 and Tables I-2
portion, raised pad, or raised boss portion of the forging. through I-5 are nominal values and subject to the desig-
Cylindrical fittings shall be marked on the O.D. or end nated manufacturing tolerances.
of the fitting in a location such that the marking will
not be obliterated as a result of welding installation. The 6.2 Socket Fittings
marking of bushings and plugs is not required by this
Standard. 6.2.1 Body Wall Thickness. The body wall thickness
of socket-welding fittings shall be equal to or greater
4.1.1 Specific Marking. The marking shall include than the values, G, shown in Tables 1 and I-1.
(but is not limited to) the following:

//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\
(a) Manufacturer’s Name or Trademark 6.2.2 Socket Wall Thickness. The socket wall aver-
(b) Material Identification. Material shall be identified age thickness and minimum thickness shall not be less
in accordance with the marking requirements of either than the corresponding values, C, shown in Tables 1
the appropriate ASTM Fitting or ASTM Forging and I-1.
Specifications (see para. 5.1). 6.2.3 Socket Position. The fixed position for the
(c) Product Conformance. Fittings covered under para. bottom of the socket with reference to the centerline of
1.1.1 shall be marked with either the ASTM Fittings the socket-welding fitting shall be maintained as
Specification material identification (e.g., “WP______”) required by the dimension, A, of Tables 1 and I-1. For
or the symbol “B16” to denote conformance to this reducing fittings, see para. 6.5.
Standard. Fittings covered under para. 1.1.2 shall be
marked with a supplementary suffix as follows: 6.2.4 Socket Depth. The socket depth shall not be
less than the minimum values, J, shown in Tables 1 and
(1) For ASTM A234, A403, A420, and A815, suffix
I-1.
the material grade with “S58” (see ASTM A960
Supplementary Requirement S58). 6.2.5 Socket Bore. The inside surface of the socket
(2) For ASTM Fitting Specifications B366, suffix the bore shall present a good workmanlike finish that is free
material grade with “SPLD.” of burrs.
(3) For all ASTM Forging Specifications, suffix
6.2.6 Perpendicularity. The end flats of socket-
“B16” with “SPLD.”
welding fittings shall be at right angles to the socket axis.
(d) Class Designation. 2000, 3000, 6000, or 9000, as
applicable. Alternatively, the designation 2M, 3M, 6M, 6.2.7 Width. The forging radius shall not reduce
or 9M, as applicable, may be used where M stands the width of the flat welding surface to less than the
for 1000. value shown in Fig. 2.

8
Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS No reproduction may be made of this material without
Not for Resale written consent of ASME.
 ASME B16.11-2011

//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\
Fig. 2 Welding Gap and Minimum Flat Dimensions for Socket-Welding Fittings

Approximate 1.5 mm (0.06 in.)

recommended gap
before welding

Minimum flat = 0.75 x minimum

socket wall thickness given in
Tables 1 and I-1 (see para. 6.2.7)

6.3 Threaded Fittings length of threads specified in all tables shall be measured
to include the countersink or chamfer.
6.3.1 Wall Thickness. The body or end wall thick-
ness of threaded fittings shall be equal to or greater than 6.4 Collars
the minimum values, G, as shown in Tables 2 through End collars of both socket-welding and threaded fit-
4 or Tables I-2 through I-4. tings shall be such that they overlap the crotch area as
6.3.2 Internal Threading. All fittings with internal illustrated in the sketches in Tables 1, 2, I-1, and I-2.
threads shall be threaded with American National 6.5 Reducing Fittings (11)
Standard Taper Pipe Threads (ASME B1.20.1). Variations
Reducing fittings, combination straight and reducing
in threading shall be limited to one turn large or one
threaded ⴛ threaded, threaded ⴛ socket welding, and
turn small from the gaging notch when using working
socket welding ⴛ socket welding couplings shall have
gages. The reference point for gaging is the starting end
the same center-to-end, center-to-bottom of socket, band
of the fitting, provided the chamfer does not exceed the
diameter, and outside diameters as the uniform size
major diameter of the internal thread. When a chamfer
fitting corresponding to the largest size end connection
on the internal thread exceeds this limit, the reference
of the reducing fitting.
point becomes the last thread scratch on the chamfer
cone.
7 ADDITIONAL TOLERANCES
(11) 6.3.3 External Threads. All externally threaded fit-
These are additional tolerances to those listed in
tings shall be threaded with American National
Tables 1 and I-1.
Standard Taper Pipe Threads (ASME B1.20.1), and the
variation in threading shall be limited to one turn large 7.1 Concentricity of Bores
or one turn small from the gage face of ring when using The socket and fitting bores shall be concentric within
working gages. The reference point for gaging is the end a tolerance of 0.8 mm (0.03 in.) for all sizes. Opposite
of the thread, provided the chamfer is not smaller than socket bores shall be concentric within a tolerance of
the minor diameter of the external thread. When a cham- 1.5 mm (0.06 in.) for all sizes.
fer on the external thread exceeds this limit, the reference
point becomes the last thread scratch on the chamfer 7.2 Coincidence of Axes
cone. The maximum allowable variation in the alignment
of the fitting bore and socket bore axes shall be 1 mm
6.3.4 Countersink or Chamfer. All internal threads
in 200 mm (0.06 in. in 1 ft). The maximum allowable
shall be countersunk a distance not less than one-half
variation in alignment of threads shall be 1 mm in
the pitch of the thread at an angle of approximately
200 mm (0.06 in. in 1 ft).
45 deg with the axis of the thread, and all external
threads shall be chamfered at an angle of 30 deg to
45 deg from the axis, for easier entrance in making a 8 PROOF TESTING
joint and protection of the thread. Countersinking and Proof testing for fittings made to this Standard is not
chamfering shall be concentric with the threads. The required.

--`,,```,,,,````-`-`,,`,,`,`,,`---
9
Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction may be made of this material
No reproduction or networking permitted without license from IHS without
Not for Resale written consent of ASME.
 INTENTIONALLY LEFT BLANK

//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\
--`,,```,,,,````-`-`,,`,,`,`,,`---

10
Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction may be made of this material
No reproduction or networking permitted without license from IHS without
Not for Resale written consent of ASME.
 ASME B16.11-2011

MANDATORY APPENDIX I
DIMENSIONS OF FITTINGS IN U.S. CUSTOMARY UNITS

This Mandatory Appendix provides tables for stan-

dard inch dimensions of fittings.
//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\

11
--`,,```,,,,````-`-`,,`,,`,`,,`---

Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction may be made of this material
No reproduction or networking permitted without license from IHS without
Not for Resale written consent of ASME.
 Table I-1 Socket-Welding Fittings

Copyright ASME International

B C
B B
D C B C C

Provided by IHS under license with ASME

A C A A D D
C D
G C G K
C G J
D E J
D B B
A J F
A A

No reproduction or networking permitted without license from IHS

J J J J B C
C

90-deg Elbow Cross Tee 45-deg Elbow Coupling Half-Coupling Cap

Socket Wall Thickness, C Center-to-Bottom of Socket, A

Bore Diameter of
[Note (2)] Body Wall, G
Socket Fittings, D 90-deg Elbows, End Wall Thickness,
Laying Lengths
Bore [Note (1)] Class Designation Class Designation Min. Tees, and Crosses 45-deg Elbows Kmin
Diameter, Depth of Half
Class Designation 3000 6000 9000 3000 6000 9000 Class Designation Tolerances, ± Class Designation
Nominal B Socket, Couplings, Couplings,
Pipe Size [Note (1)] 3000 6000 9000 Avg. Min. Avg. Min. Avg. Min. Min. Min. Min. J 3000 6000 9000 3000 6000 9000 E F A E F 3000 6000 9000

1
⁄8 0.440 0.299 0.189 . . . 0.125 0.125 0.156 0.135 ... ... 0.095 0.124 ... 0.38 0.44 0.44 ... 0.31 0.31 ... 0.25 0.62 0.03 0.06 0.03 0.19 0.25 ...
0.420 0.239 0.126 . . .
1
⁄4 0.575 0.394 0.280 . . . 0.149 0.130 0.181 0.158 ... ... 0.119 0.145 ... 0.38 0.44 0.53 ... 0.31 0.31 ... 0.25 0.62 0.03 0.06 0.03 0.19 0.25 ...

12
0.555 0.334 0.220 . . .
3
0.710 0.523 0.389 . . . 0.158 0.138 0.198 0.172 ... ... 0.126 0.158 ... 0.38 0.53 0.62 ... 0.31 0.44 ... 0.25 0.69 0.06 0.12 0.06 0.19 0.25 ...

No reproduction may be made of this material

⁄8

Not for
0.690 0.463 0.329 . . .
ASME B16.11-2011

1
⁄2 0.875 0.652 0.494 0.282 0.184 0.161 0.235 0.204 0.368 0.322 0.147 0.188 0.294 0.38 0.62 0.75 1.00 0.44 0.50 0.62 0.38 0.88 0.06 0.12 0.06 0.25 0.31 0.44

Resale
0.855 0.592 0.434 0.222

without
3
⁄4 1.085 0.854 0.642 0.464 0.193 0.168 0.274 0.238 0.385 0.337 0.154 0.219 0.308 0.50 0.75 0.88 1.12 0.50 0.56 0.75 0.38 0.94 0.06 0.12 0.06 0.25 0.31 0.50
1.065 0.794 0.582 0.404
1 1.350 1.079 0.845 0.629 0.224 0.196 0.312 0.273 0.448 0.392 0.179 0.250 0.358 0.50 0.88 1.06 1.25 0.56 0.69 0.81 0.50 1.12 0.08 0.16 0.08 0.38 0.44 0.56
1.330 1.019 0.785 0.569
1
1 ⁄4 1.695 1.410 1.190 0.926 0.239 0.208 0.312 0.273 0.478 0.418 0.191 0.250 0.382 0.50 1.06 1.25 1.38 0.69 0.81 0.88 0.50 1.19 0.08 0.16 0.08 0.38 0.44 0.56
1.675 1.350 1.130 0.866
1
1 ⁄2 1.935 1.640 1.368 1.130 0.250 0.218 0.351 0.307 0.500 0.438 0.200 0.281 0.400 0.50 1.25 1.50 1.50 0.81 1.00 1.00 0.50 1.25 0.08 0.16 0.08 0.44 0.50 0.62
1.915 1.580 1.308 1.070

Copyright c 2012 by the American Society of Mechanical Engineers.

2 2.426 2.097 1.717 1.533 0.273 0.238 0.430 0.374 0.545 0.477 0.218 0.344 0.436 0.62 1.50 1.62 2.12 1.00 1.12 1.12 0.75 1.62 0.08 0.16 0.08 0.50 0.62 0.75
2.406 2.037 1.657 1.473
1

written consent of ASME.

2 ⁄2 2.931 2.529 . . . . . . 0.345 0.302 . . . ... ... ... 0.276 ... ... 0.62 1.62 ... ... 1.12 ... ... 0.75 1.69 0.10 0.20 0.10 0.62 0.75 ...
2.906 2.409 . . . ...

//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\
3 3.560 3.128 . . . . . . 0.375 0.327 . . . ... ... ... 0.300 ... ... 0.62 2.25 ... ... 1.25 ... ... 0.75 1.75 0.10 0.20 0.10 0.75 0.88 . . .. . .
3.535 3.008 . . . ...
4 4.570 4.086 . . . . . . 0.421 0.368 . . . ... ... ... 0.337 ... ... 0.75 2.62 ... ... 1.62 ... ... 0.75 1.88 0.10 0.20 0.10 0.88 1.12 ...
4.545 3.966 . . . ...

GENERAL NOTE: Dimensions are in inches.

NOTES:
(1) Upper and lower values for each size are the respective maximum and minimum dimensions.
(2) Average of socket wall thickness around periphery shall not be less than listed values. The minimum values are permitted in localized areas.

--`,,```,,,,````-`-`,,`,,`,`,,`---
 ASME B16.11-2011

Table I-2 Forged Threaded Fittings

A
A A C
G

H H H
A A C
L2 B

H H H H

90-deg Elbow Tee Cross 45-deg Elbow

Minimum
Length of
Center-to-End Elbows, Center-to-End Outside Diameter of Minimum Wall Thread
Nominal
Tees, and Crosses, A 45-deg Elbow, C Band, H Thickness, G [Note (1)]
Pipe
Size 2000 3000 6000 2000 3000 6000 2000 3000 6000 2000 3000 6000 B L2
1
⁄8 0.81 0.81 0.97 0.69 0.69 0.75 0.88 0.88 1.00 0.125 0.125 0.250 0.25 0.2639
1
⁄4 0.81 0.97 1.12 0.69 0.75 0.88 0.88 1.00 1.31 0.125 0.130 0.260 0.32 0.4018
3
⁄8 0.97 1.12 1.31 0.75 0.88 1.00 1.00 1.31 1.50 0.125 0.138 0.275 0.36 0.4078
1
⁄2 1.12 1.31 1.50 0.88 1.00 1.12 1.31 1.50 1.81 0.125 0.161 0.321 0.43 0.5337
//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\

3
⁄4 1.31 1.50 1.75 1.00 1.12 1.31 1.50 1.81 2.19 0.125 0.170 0.336 0.50 0.5457
1 1.50 1.75 2.00 1.12 1.31 1.38 1.81 2.19 2.44 0.145 0.196 0.391 0.58 0.6828
11⁄4 1.75 2.00 2.38 1.31 1.38 1.69 2.19 2.44 2.97 0.153 0.208 0.417 0.67 0.7068
11⁄2 2.00 2.38 2.50 1.38 1.69 1.72 2.44 2.97 3.31 0.158 0.219 0.436 0.70 0.7235

2 2.38 2.50 3.25 1.69 1.72 2.06 2.97 3.31 4.00 0.168 0.281 0.476 0.75 0.7565
21⁄2 3.00 3.25 3.75 2.06 2.06 2.50 3.62 4.00 4.75 0.221 0.301 0.602 0.93 1.1380
3 3.38 3.75 4.19 2.50 2.50 3.12 4.31 4.75 5.75 0.236 0.348 0.655 1.02 1.2000
4 4.19 4.50 4.50 3.12 3.12 3.12 5.75 6.00 6.00 0.258 0.440 0.735 1.09 1.3000

GENERAL NOTE: Dimensions are in inches.

NOTE:
(1) Dimension B is minimum length of perfect thread. The length of useful thread (B plus threads with fully formed roots and flat crests)
shall not be less than L2 (effective length of external thread) required by American National Standard for Pipe Threads (ASME B1.20.1;
see para. 6.3).

13 --`,,```,,,,````-`-`,,`,,`,`,,`---

Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction may be made of this material
No reproduction or networking permitted without license from IHS without
Not for Resale written consent of ASME.
Copyright ASME International
Table I-3 Forged Threaded Fittings — Street Elbows

Provided by IHS under license with ASME

H

L2 B

No reproduction or networking permitted without license from IHS

L A
G1

G2
J

Center-to-Female Outside Diameter of

End Street Ells, Center-to-Male Band, H Minimum Wall Minimum Wall
Minimum Length
A [Note (1)] End Street Ells, J [Note (2)] Thickness, G1 Thickness, G2 [Note (3)] Minimum
Internal Thread

14
Nominal Length
Class Designation Class Designation Class Designation Class Designation Class Designation [Note (4)]
Pipe Size, Male Thread,

No reproduction may be made of this material

Not for
NPS 3000 6000 3000 6000 3000 6000 3000 6000 3000 6000 B L2 L
ASME B16.11-2011

Resale
⁄8 0.75 0.88 1.00 1.25 0.75 1.00 0.125 0.200 0.108 0.166 0.25 0.2639 0.38

without
1
⁄4 0.88 1.00 1.25 1.50 1.00 1.25 0.130 0.223 0.127 0.208 0.32 0.4018 0.44
3
⁄8 1.00 1.12 1.50 1.62 1.25 1.50 0.138 0.275 0.138 0.220 0.36 0.4078 0.50
1
⁄2 1.12 1.38 1.62 1.88 1.50 1.75 0.161 0.321 0.164 0.257 0.43 0.5337 0.56
3
⁄4 1.38 1.75 1.88 2.25 1.75 2.00 0.170 0.336 0.192 0.270 0.50 0.5457 0.62
1 1.75 2.00 2.25 2.62 2.00 2.44 0.196 0.391 0.219 0.313 0.58 0.6828 0.75
11⁄4 2.00 2.12 2.62 2.81 2.44 2.75 0.208 0.417 0.219 0.334 0.67 0.7068 0.81
11⁄2 2.12 2.50 2.81 3.31 2.75 3.31 0.219 0.436 0.246 0.350 0.70 0.7235 0.81
2 2.50 3.25 3.31 4.13 3.31 4.00 0.281 0.476 0.301 0.382 0.75 0.7565 0.88

Copyright c 2012 by the American Society of Mechanical Engineers.

GENERAL NOTE: Dimensions are in inches.

written consent of ASME.

NOTES:
(1) Dimension A of Table I-2 for the appropriate fitting size may also be used at the option of the manufacturer.
(2) Dimension H of Table I-2 for the appropriate fitting size may also be used at the option of the manufacturer.
(3) Wall thickness before threading.
(4) Dimension B is minimum length of perfect thread. The length of useful thread (B plus threads with fully formed roots and flat crests) shall not be less than L2 (effective length of
external thread) required by American National Standard for Pipe Threads (ASME B1.20.1; see para. 6.3).

--`,,```,,,,````-`-`,,`,,`,`,,`---

//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\
 ASME B16.11-2011

Table I-4 Threaded Fittings

W P
W L2
2 L2 B

--`,,```,,,,````-`-`,,`,,`,`,,`---
B
L2
B
D
D
D

Coupling Half-Coupling Cap

Minimum Length
Nominal End-to-End End-to-End Outside Minimum End of Thread
Couplings, W Caps, P Diameter, D Wall Thickness, G [Note (1)]
Pipe
Size 3000 and 6000 3000 6000 3000 6000 3000 6000 B L2
1
⁄8 1.25 0.75 ... 0.62 0.88 0.19 ... 0.25 0.2639
1
⁄4 1.38 1.00 1.06 0.75 1.00 0.19 0.25 0.32 0.4018
3
⁄8 1.50 1.00 1.06 0.88 1.25 0.19 0.25 0.36 0.4078
1
⁄2 1.88 1.25 1.31 1.12 1.50 0.25 0.31 0.43 0.5337

3
⁄4 2.00 1.44 1.50 1.38 1.75 0.25 0.31 0.50 0.5457
1 2.38 1.62 1.69 1.75 2.25 0.38 0.44 0.58 0.6828
11⁄4 2.62 1.75 1.81 2.25 2.50 0.38 0.44 0.67 0.7068
11⁄2 3.12 1.75 1.88 2.50 3.00 0.44 0.50 0.70 0.7235

2 3.38 1.88 2.00 3.00 3.62 0.50 0.62 0.75 0.7565

21⁄2 3.62 2.38 2.50 3.62 4.25 0.62 0.75 0.93 1.1380
3 4.25 2.56 2.69 4.25 5.00 0.75 0.88 1.02 1.2000
4 4.75 2.69 2.94 5.50 6.25 0.88 1.12 1.09 1.3000

GENERAL NOTES:
(a) Dimensions are in inches.
(b) Class 2000 and NPS 1⁄8 Class 6000 couplings, half couplings, and caps are not included in this Standard.
(c) The wall thickness away from the threaded ends shall meet the minimum wall thickness requirements of Table I-2 for the appropriate
NPS and Class Designation fitting.
NOTE:
(1) Dimension B is minimum length of perfect thread. The length of useful thread (B plus threads with fully formed roots and flat crests)
shall be no less than L 2 (effective length of external thread) required by American National Standard for Pipe Threads (ASME B1.20.1;
see para. 6.3).

15
//^:^^#^~^^"~~:~"~$$"

Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction may be made of this material
No reproduction or networking permitted without license from IHS without
Not for Resale written consent of ASME.
 ASME B16.11-2011

(11) Table I-5 Plugs and Bushings

F F

B H G
D
A A
A A
A

Square Head Hex Head Round Head Hex Head Flush

Plug Plug Plug Bushing Bushing
[Note (1)]

Square Head Plugs Round Head Plugs Hex Plugs and Bushings
Minimum
Nominal Minimum Width Nominal Nominal Width
Minimum Hex Height
Pipe Minimum Square Flats, C Head Minimum Flats, F
Size Length, A Height, B [Note (2)] Diameter, E Length, D [Note (2)] Bushing, G Plug, H
//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\

1
⁄8 0.38 0.25 0.28 0.41 1.38 0.44 ... 0.25
1
⁄4 0.44 0.25 0.38 0.53 1.62 0.62 0.12 0.25
3
⁄8 0.50 0.31 0.44 0.69 1.62 0.69 0.16 0.31
1
⁄2 0.56 0.38 0.56 0.84 1.75 0.88 0.19 0.31

3
⁄4 0.62 0.44 0.62 1.06 1.75 1.06 0.22 0.38
1 0.75 0.50 0.81 1.31 2.00 1.38 0.25 0.38
11⁄4 0.81 0.56 0.94 1.69 2.00 1.75 0.28 0.56
11⁄2 0.81 0.62 1.12 1.91 2.00 2.00 0.31 0.62

2 0.88 0.69 1.31 2.38 2.50 2.50 0.34 0.69

21⁄2 1.06 0.75 1.50 2.88 2.75 3.00 0.38 0.75
3 1.12 0.81 1.69 3.50 2.75 3.50 0.41 0.81
4 1.25 1.00 2.50 4.50 3.00 4.62 0.50 1.00

GENERAL NOTE: Dimensions are in inches.

NOTE:
(1) Cautionary Note Regarding Hex Bushings: Hex head bushings of one-size reduction should not be used in services where they might
--`,,```,,,,````-`-`,,`,,`,`,,`---

be subject to harmful loads and forces other than internal pressures.

(2) Manufacturer’s applied tolerance shall ensure dimension will fit U.S. Customary tooling.

16
Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS No reproduction may be made of this material without
Not for Resale written consent of ASME.
 ASME B16.11-2011

MANDATORY APPENDIX II
REFERENCES

The following is a list of publications referenced in ASTM A815/A815M-08, Specification for Wrought
this Standard. Ferritic, Ferritic/Austenitic, and Martensitic Stainless
Steel Piping Fittings
ASME B1.20.1, Pipe Threads, General Purpose (Inch) ASTM A960/A960M-07, Specification for Common
ASME B16.34, Valves — Flanged, Threaded, and Requirements for Wrought Steel Piping Fittings
Welding End ASTM B366-04b ⑀ 1 , Specification for Factory-Made
ASME B36.10M, Welded and Seamless Wrought Steel Wrought Nickel and Nickel Alloy Fittings
Pipe ASTM B462-06, Specification for Forged or Rolled UNS
N06030, N06022, N06035, N06200, N06059, N06686,
Publisher: The American Society of Mechanical
N08020, N08024, N08026, N08367, N10276, N10665,
Engineers (ASME), Three Park Avenue, New York, N10675, N10629, N08031, N06045, N06025, and
NY 10016-5990; Order Department: 22 Law Drive, P.O. R20033 Alloy Pipe Flanges, Forged Fittings, and
Box 2900, Fairfield, NJ 07007-2900 (www.asme.org) Valves and Parts for Corrosive High-Temperature
Service
ASTM A105/A105M-05, Specification for Carbon Steel
ASTM B564-06a, Specification for Nickel Alloy Forgings
Forgings for Piping Components Publisher: American Society for Testing and Materials
ASTM A182/A182M-08, Specification for Forged or (ASTM International), 100 Barr Harbor Drive, P.O.
Rolled Alloy and Stainless Steel Pipe Flanges, Forged Box C700, West Conshohocken, PA 19428-2959
Fittings, and Valves and Parts for High-Temperature (www.astm.org)
Service
ISO 9000:2005, Quality management systems —
ASTM A234/A234M-07, Specification for Piping Fundamentals and vocabulary1
Fittings of Wrought Carbon Steel and Alloy Steel for ISO 9001:2008, Quality management systems —
Moderate and High Temperature Service Requirements1
ASTM A350/A350M-07, Specification for Carbon and ISO 9004:2009, Managing for the sustained success of
Low-Alloy Steel Forgings, Requiring Notch an organization — A quality management approach1
Toughness Testing for Piping Components Publisher: International Organization for
ASTM A403/A403M-07a, Specification for Wrought Standardization (ISO), Central Secretariat, 1, ch. de la
Austenitic Stainless Steel Piping Fittings Voie-Creuse, Case postale 56, CH-1211, Genève 20,
ASTM A420/A420M-03, Specification for Piping Switzerland/Suisse (www.iso.org)
Fittings of Wrought Carbon Steel and Alloy Steel for 1
May also be obtained from the American National Standards
Low-Temperature Service Institute (ANSI), 25 West 43rd Street, New York, NY 10036.

17
--`,,```,,,,````-`-`,,`,,`,`,,`---

Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS No reproduction may be made of this material without
Not for Resale written consent of ASME.
//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\
 ASME B16.11-2011

NONMANDATORY APPENDIX A
QUALITY SYSTEM PROGRAM

The products manufactured in accordance with this manufacturer’s quality system program by an indepen-
Standard shall be produced under a quality system pro- dent oganization shall be the responsibility of the manu-
gram following the principles of an appropriate stan- facturer. The detailed documentation demonstrating
dard from the ISO 9000 series.1 A determination of the program compliance shall be available to the purchaser
need for registration and/or certification of the product at the manufacturer ’s facility. A written summary
description of the program utilized by the product man-
ufacturer shall be available to the purchaser upon
1
The series is also available from the American National request. The product manufacturer is defined as the
Standards Institute (ANSI) and the American Society for Quality
(ASQ) as American National Standards that are identified by the
entity whose name or trademark appears on the product
prefix “Q” replacing the prefix “ISO.” Each standard of the series in accordance with the marking or identification require-
is listed under References in Mandatory Appendix II. ments of this Standard.
--`,,```,,,,````-`-`,,`,,`,`,,`---

18
Copyright ASME International Copyright c 2012 by the American Society of Mechanical Engineers.
Provided by IHS under license with ASME
No reproduction may be made of this material
No reproduction or networking permitted without license from IHS without
Not for Resale written consent of ASME.
//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\
 B16 AMERICAN NATIONAL STANDARDS FOR PIPING,
PIPE FLANGES, FITTINGS, AND VALVES

Gray Iron Pipe Flanges and Flanged Fittings (Classes 25, 125, and 250) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.1-2010
Malleable Iron Threaded Fittings: Classes 150 and 300. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.3-2011
Gray Iron Threaded Fittings: Classes 125 and 250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.4-2011
Pipe Flanges and Flanged Fittings NPS 1⁄2 Through NPS 24 Metric/Inch Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.5-2009
Factory-Made Wrought Buttwelding Fittings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.9-2007
Face-to-Face and End-to-End Dimensions of Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.10-2009
Forged Fittings, Socket-Welding and Threaded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.11-2011
Cast Iron Threaded Drainage Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.12-2009
Ferrous Pipe Plugs, Bushings, and Locknuts with Pipe Threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.14-2010(R1991)
Cast Copper Alloy Threaded Fittings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.15-2011
Cast Copper Alloy Solder Joint Pressure Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B16.18-2001 (R2005)
Metallic Gaskets for Pipe Flanges: Ring-Joint, Spiral-Wound, and Jacketed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.20-2007
//^:^^#^~^^"~~:~"~$$"~$^"#:*~~@^~@#"@^~~*:#*:^$:$~:*"\\

Nonmetallic Flat Gaskets for Pipe Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.21-2005

Wrought Copper and Copper Alloy Solder Joint Pressure Fittings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B16.22-2001 (R2010)
Cast Copper Alloy Solder Joint Drainage Fittings: DWV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.23-2011
Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500, and 2500 . . . . . . . . . . . . . . . . . . . . . . . B16.24-2011
Buttwelding Ends. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.25-2007
Cast Copper Alloy Fittings for Flared Copper Tubes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.26-2011
Wrought Copper and Wrought Copper Alloy Solder Joint Drainage Fittings — DWV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.29-2007
Manually Operated Metallic Gas Valves for Use in Gas Piping Systems Up to 125 psi
(Sizes NPS 1⁄2 Through NPS 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B16.33-2002 (R2007)
Valves — Flanged, Threaded, and Welding End. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.34-2004
Orifice Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.36-2009
Large Metallic Valves for Gas Distribution Manually Operated, NPS 21⁄2 (DN 65)
to NPS 12 (DN 300), 125 psig (8.6 bar) Maximum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.38-2007
Malleable Iron Threaded Pipe Unions: Classes 150, 250, and 300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.39-2009
Manually Operated Thermoplastic Gas Shutoffs and Valves in Gas Distribution Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.40-2008
Ductile Iron Pipe Flanges and Flanged Fittings: Classes 150 and 300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.42-2011
Manually Operated Metallic Gas Valves for Use in Aboveground Piping Systems Up to 5 psi . . . . . . . . . . . . . . . . . . . . . .B16.44-2002 (R2007)
Cast Iron Fittings for Sovent® Drainage Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B16.45-1998 (R2006)

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Large Diameter Steel Flanges NPS 26 Through NPS 60 Metric/Inch Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.47-2011
Line Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.48-2010
Factory-Made Wrought Steel Buttwelding Induction Bends for Transportation and Distribution Systems . . . . . . . . . . . . . . . . . . . . . B16.49-2007
Wrought Copper and Copper Alloy Braze-Joint Pressure Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B16.50-2001 (R2008)
Copper and Copper Alloy Press-Connect Pressure Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B16.51-2011

The ASME Publications Catalog shows a complete list of all the Standards published by the Society. For a complimentary catalog, or the latest
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ASME B16.11-2011

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