MSS SP- 44-1996 Reaffirmed 2001 Steel Pipeline Flanges Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, NE Vienna, Virginia 22180 (703) 281-6613 Cop by the Mrwactuers Stngadzton Sac O The Ve And Flings nds Inc hu Jan 08 08.7Mss STANDARD PRACTICE sP-44 ‘An MSS Standard Practice is intended as a basis for common practice by the manufacturer, the user, and the general public. The existence of an MSS Standard Practice does not in itself preclude the manufacture, sale, or use of products not conforming to the Standard Practice, Mandatory conformance is established only by reference in a code, specification, sales contract or public law, as applicable. Substantive changes in this 1996 edition are “flagged” by parallel bars as shown on the margins of this paragraph, The specific detail ofthe change may be determined by comparing the material flagged with that in the previous edition, Non-toleranced dimensions in this Standard Practice are nominal, and unless otherwise specified, shall be considered “for reference only”. Any part of this standard may be quoted. Credit lines should read ‘Extracted from MSS SP-44, 1996, with permission of the publisher, the Manufacturers Standardization Society.’ Reproduction prohibited under copyright convention untess written permission is granted by the Manufacturers Standardization Socioty of the Valve and Fittings Industry, Inc. Originally Approved July 1952 Copyright ©, 1985 by ‘Manufacturers Standardization Soctery of the Valve and Fittings Industry, Ine. Printed in U.S.A. Cop by the Mruactuers Stgadzton Sac O The Ve An Fins nds Inc Th la 0808.91.77 2003‘MSS STANDARD PRACTICE SP-44 FOREWORD The Manufacturers Standardization Society originally developed the Standard Practice in response to the continued requests for steel pipe flanges for pipeline use, particularly in sizes larger than those covered by ANS! Standard 816.5 on ‘Steel Pipe Flanges and Flanged Fittings. The line pipe is uniquely characterited by high-strength, cold worked, thin-wall of the carbon steel grade, which necessitates special considerations for the welding end of the flanges. “The size and pressure class range was originally NPS 26 through NPS 36 in pressure classes customarily designated in ANSI Standard 816.5 as 300, 400, 600, and 900 Ib. The 1970 edition deleted the slip-on flanges for tack of demand, and ‘added a 150 Ib. class and coverage for sizes NPS 12 through NPS 24. Additional coverage was also necessitated by the advent Of the use of line pipe of grades having minimum specified yield strength higher than the 52,000 psi maximum contemplated at the time of intial development, and therefore still thinner walls. In some instances, this advent widened the differential between the tensile properties of the flange steel versus that of the mating pipe steel. This, in turn necessitated greater flexibility in the selection of hub dimensions, so that various combi tions of materialstrength and flange-dimensions could be utilized to supply the flanges. Section 5 on Flange Design was intro- duced at this point, and is one of the key features of this standard. The 1972 edition included the coverage of blind flanges in all pressure classes and clarification of text requirements for better understanding and usage under the more diverse conditions. The 1976 edition expanded the size range above size NPS 36. The driling templates for the Clest 150 flanges of the NPS 28 and larger cizee continued’ the pravioue philosophy of adopting the drilling tomplate of the Clase 126 of ANS! Standard B16.1. However, the drilling templates of the Class 300 flanges of the NPS 38 and larger sizes did not continue ‘the adoption of the Class 250 of ANSI Standard B16.1 drilling templates, nor did the NPS 38 and larger sizes of Classes 400, £600, and 900 continue the extrapolation of ANS! B16.5 drilling templates; instead, these drilling tomplates were necessarily designed more compactly because of the increased loads. While these flanges are designated by the customary ANSI Standard ‘Class 150, 300, 400, 600, and 900, their use is almost entirely confined to cross country transmission pipelines at atmos- ppheric temperatures. The flanges have been designed primarily for use at their cold ratings which conform to the ANSI Standard B16.5 ratings of 100F, and are intended primarily for attachment to relatively thin-wall, high-strength cold worked pipe, and high-strength butt welding fittings in pipeline service at temperatures of 450F and lower. However, flanges forged Of other materials are capable of pressure temperature ratings as specified in Paragraph 2.2. ‘The 1980 edition was created to bring the document into closer editorial alignment with ANSI 816.5. However, out of recognition of the successful experience of the pipeline industry, room temperature ratings were extended to 250F. De-ating above 250F was accelerated such that the A50F ratings are the same as B16.5. Users are cautioned that when these flanges are bolted to valves and used at temperatures between 100F and 450F, the rating of the valve will not be as high as the flange. The 1990 revision of this SP was required to update the reference standards list and delete the metric equivalents, The 1991 revision of this SP was required to add blind flange machining guidance, flat face requirements and precau- tionary notes as well as update of referenced standards. The 1996 revision adds a table with permissible imperfections in tlange facing finish and clarifies annex A design criteria, There were several errata, or corrections made to references to other standards. Dimensional tolerances have been changed where necessary to conform with ASME B16.5 and 816.47. es Cop by the Mruactuers Stgadzton Sac O The Ve An Fins nds Inc Thi don 8 08.71:77 2005,MSS STANDARD PRACTICE SP-44 CONTENTS. PAGE FOREWORD. ii CONTENTS . SCOPE. cee PRESSURE-TEMPERATURE RATINGS. . MATERIALS ..........0055 HEAT TREATMENT . FLANGE DESIGN.........5. MARKING FACINGS . : . CODE LIMITATIONS ...... FLANGE BOLTING DIMENSIONS ..... 10. TOLERANCES......... PPA Aveeye wannan een # TABLE 1 — TENSILE REQUIREMENTS. . 2 — LIST OF BOLTING SPECIFICATIONS 3 — PRESSURE-TEMPERATURE RATINGS « 4 — SHEET GASKET DIMENSIONS .............55++ 5 — RING-JOINT GASKET DIMENSIONS . 6 — CLASS 150, 285 PSI RAISED FACE. 7 — CLASS 300, 740 PSI RAISED FACE AND RING-TYPE JOINT .. 8 — CLASS 400, 990 PSI RAISED FACE AND RING-TYPE JOINT . 9 — CLASS 600, 1480 PSI RAISED FACE AND RING-TYPE JOINT - 10 — CLASS 900, 2220 PSI RAISED FACE AND RING-TYPE JOINT . 11 — PERMISSIBLE IMPERFECTIONS IN FLANGE FACING FINISH FIGURE | — ACCEPTABLE DESIGNS FOR UNEQUAL WALL THICKNESS . 2— RECOMMENDED BEVEL FOR WALL THICKNESS (T) AT END OF FLAN 0.88 IN. OR LESS sess testers D 3— RECOMMENDED . LANGE, GREATER THAN O38 IN. settee 9 ANNEX A— DESIGN CRITERIA . = 18 ANNEX B— BLIND FLANGE DESIGN CRITERIA . 19 ANNEX C — REFERENCED STANDARDS AND APPLICABLE DATES. Cop by the Mrwactuers Stngadzton Sac O Te Ve Ant Flings nds Inc Thi dan 8 '08.71:78 2005,STANDARD PRACTICE, SP-44 Copy by the . SCOPE 1.1 General — This standard covers pressure- temperature ratings, materials, dimensions, toler- ances (by reference to ASME/ANSI BI6.5), marking and testing. The welding neck type flanges shall be forged steel, and the blind flanges may be made of either forged steel or from steel plates. 1.1.1 Dimensional requirements for sizes NPS 10 and smaller are provided by reference to ASME/ ANSI BI6.5. When such flanges meet all other stipulations of this standard, they shall be con- sidered as complying therewith 1.2 References 1.2.1 Referenced Standards — Standards and specifications adopted by reference in this standard are shown in Annex C, for convenience of identi- fying edition number, date and source of supply. A flange made in conformance with a prior edi- tion of referenced standards and in all other respects conforming to this standard will be con- sidered to be in conformance even though the edi- tion reference may be changed in a subsequent revi- sion of this Standard Practice. 1.2.2 Codes and Regulations — A flange used under the jurisdiction of the ASME Boiler and Pressure Vesse! Code, the ANSI Code for Pressure Piping, or Governmental Regulations, is subject to any limitation of that code or regulation. This, includes any maximum temperature limitation for a material, or rule governing the use of a material at a low temperature. PRESSURE-TEMPERATURE RATINGS 2.1 General Flanges covered by this standard shall bbe designated as one of the following: Class 150, 300, 400, 600 and 900. Ratings in Table 3 are in USS. customary units. 2.2 Rating for Other Materials and Temperatures above 450 F — NPS 26 and larger flanges forged of ufactures Stendardeato Society OF The eve And Fitings busty ie Thi dan 8'06.71:79 2005, steels covered in ASME/ ANSI BI6.5 whose bores are no larger than those which may be calculated for pipe complying with parallel ASTM pipe specifica~ tions, and which comply with all requirements (ex- cept dimensions) of American National Standard BI6.5 are capable of being utilized at the pressure~ ‘temperature ratings given in that standard. MATERIALS 3.1 The steel used in the manufacture of these flanges shall be selected by the manufacturer to ‘meet the following requirements. 3.1.1 Allmaterials used for flanges shall be killed steel. 3.1.2. The steel used shall be suitable for field ‘welding to other flanges, fittings, or pipe manufac- tured under ASTM specifications A 105, A 53, A 106, A 350, A 381, A 694, A 707, or API Standard SL. 3.1.3 The steel used shall have a maximum car~ bbon content of 0.35 and a carbon equivalent com- puted by the following equation: Mn , Cr+ Mo +V 6 * $ that should not exceed 0.487%, based on ladle analysis. If the carbon equivalent factor exceeds 0.48%, the acceptance ofthe flanges shall be based on agreement between purchaser and manufac- turer. Ni + Cu CE =C+ i + 3.1.3.1 The choice and use of alloying elements, combined with the elements within the limits prescribed in paragraph 3.1.3 to give the required tensile properties prescribed in paragraphs 3.1.4 shall be made by the flange manufacturer and in- cluded and reported in the ladle analysis to identi- fy the type of steel 3.1.4 The steel used shall have tensile properties conforming to the requirements prescribed in Table 1 and capable of meeting the requirements of section 4 and the flange manufacturer's ‘design conditions as given in Annex A.Copyrinh by the STANDARD PRACTICE sP44 3.1.4.1 The test specimens may be taken from the forgings or, at the manufacturers’ option, from the billets or forging bar entering into the finished product, provided such test blank has undergone relatively the same forming and the equivalent heat treatment as the finished flange. The dimensions of the test biank must be such as to adequately reflect the heat treatment properties of the hub of the flange. Specimens shall be obtained from the midwall of the thinnest section of the hub of the flange or ¥ in. from the surface of the test blank. The orientation of specimens taken from a flange shall be longitudinal. 3.2 Bolting — Bolting listed in Table 2 shall be used in flanged joints covered by this standard. Bolting of other material may be used if permit- ted by the applicable code or governmental regula- tion. All bolting materials are subject to the follow- ing limitations. 3.2.1 High Strength Boting — Boling materials having allowable stresses not less than those for ASTM A193 Gr B7 are listed as high strength in Table 2. These and other materials of comparable strength may be used in any flanged joint. 3.2.2 Intermediate Strength Bolting — Boling materials listed as intermediate strength in Table 2, and other bolting of comparable strength, may be used in any flanged joint, provided the user verifies their ability to seat the selected gasket and maintain a sealed joint under expected operating conditions. 3.2.3 Low Strength Bolting — Bolting materials having not more than 30 ksi specified minimum yield strength are listed as low strength in Table 2. These materials and others of comparable strength shall be used only in Class 150 and Class 300 joints, and only with gaskets described in 3.3.2. TABLE 1, TENSILE REQUIREMENTS YIELD POINT | TENSILE STRENGTH MIN. MIN. ELONGATION IN 2 IN. GRADE si si MIN. PERCENT F36 36 60 20 Faz 42 60 20 F46 46 60 20 Fag 48 - 62 20 F50 50 64 20 F52 32 66 | 20 FS6 56 68 20 F60 60 20 Fos 65 18 F70 70 80 18 | © Note: except as required in para. 4.2. ufactures Stendardeato Society OF The eve And Fitings busty ie Thi dan 8'06.71:79 2005,MSS STANDARD PRACTICE. ‘SP-44 TABLE 2. LIST OF BOLTING SPECIFICATIONS ‘ASTM BOLTING MATERIALS HIGH STRENGTH © INTERMEDIATE STRENGTH ©) LOW STRENGTH ® ‘SPECGR. NOTES | SPECGR. ‘NOTES SPEC-GR. NOTES + A193-B7 A193-BS A193-B8_ CLI |g) A193-B16 A193-B6 A193-B8C CLI | (2) A320-L7 @ | A193. B6x A193.B8M CLI | (@) A320-L7A, @ A193-B7M A193-B8T —CLI|(g) A320-L7B @ | A193-B8. CL 0 A193-B8A @) A320-L7C (@) | A193-B8C CL o A193-BBCA @®) 320-143 @ | Al93-BBM CL o A193-B8MA @) A354-BC A193-B8T CL. o A193-BBTA ® A354-BD A320-B8 CL © A307-B ) AS40-B21 A320-B8C CL? o A320-B8_ CLI |g) AS40-B22 A320-BBF —CL2. 0 A320-B8C_ CLI] = (g) ‘AS40-B23 A320-B8M = CL2. 0 A320-B8M— CLI | (g) A540-B24 A320-B8T —CL2. © A320-B8T CLI| —(e) A449 a 453-651 © 453-660 © General Note: Bolting materials shall not be used beyond temperature limits specified in the governing Code. NOTES: (a). These bolting materials may be used with all listed materials and gaskets. (b) These bolting materials may be used with all listed materials and gaskets; provided it has been verified that a sealed joint can be maintained under rated pressure and temperature. © These bolting materials may be used with all listed materials but are limited to Class 150 and Class 300 joints. See 3.3 for recommended gasket practices. (@ This ferritic material is intended for low temperature service, use A194 Gr. 4 or Gr. 7 nuts. (©) This special alloy is intended for high temperature service with austenitic stainless steel. This austenitic stainless steel has been carbide solution treated and strain hardened. Use A194 nuts of corresponding material. (8) This austenitic stainless material has been carbide solution treated but not strain hardened. Use A194 ‘nuts of corresponding material. (b) This carbon steel fastener shall not be used above 400F or below -20F, see also Note(c). Bolts with drilled or undersized heads shall not be used. (@ ‘Acceptable nuts for use with quenched and tempered bolts are A194 Gr. 2 and Gr. 2H. Mechanical property requirements for studs shall be the same as those for bolts. Cop by the Mrwactuers Stngadztion Sac O The Ve And Fins nds Ine Thi don 8 06.71:30 2005,STANDARD PRACTICE SP-44 TABLE 3. PRESSURE-TEMPERATURE RATINGS MAXIMUM ALLOWABLE NO! iOCK WORKING PRESSURES IN POUNDS PER SQUARE INCH (GAGE) TEMP. F cLass Chass cLass CLASS Chass -20 to 250 285 740 990 1480 2220 300 275 ns 955 1430 2145 350 265 690 925 1380 2070 400 255 665 890 1330 2000 450 24s 640 860 1285 1925 3.3 Gasket Material 3.3.1 The user is responsible for selection of gasket materials which will withstand the expected bolt loading without injurious crushing, and which are suitable for the service conditions. Particular at- tention should be given to gasket selection if a ‘system hydrostatic test will exceed the test pressure specified in 8.2. Such a test involves the risk of ex- cessive flange distortion. 3.3.2 Gasket dimensions for 1/16 inch sheet asbes- tos in Table 4 are based on a contact area equal to approximately twice the bolt root area. Class 150 flanged joints should use these exclusively. 3.3.3. Ring joint gasket materials hall conform to ANSI B16.20 with dimensions as given in Table 5. 3.3.4 Sheet and ring joint gaskets for sizes NPS 10 and smaller shall conform to ASME/ ANSI 16.5 dimensions and recommendations. . HEAT TREATMENT 4.1 The F42 and higher grades of flanges of all pressure classes and the class 400 and higher classes of Grade F36 flanges shall be normalized or quen- ched and tempered. 4.2 It is recognized that the cooling rate in a quenching operation may be slower in the thicker ring section of the flange than in the thinner hub section. Hence, the increase in yield strength due Cop by the Mrwactuers Stngadztion Sac O The Ve And Flings nds Inc Thi tan 08 06.71:31 2005, to the quenching operation may be less in the ring section than in the hub section. This factor is ac- ‘counted for in the Section on Design in Paragraph 5.3. NPS 38 and larger sizes of the 300 and higher classes of welding neck flanges shall have 42 ksi ‘minimum yield strength in the ring section, FLANGE DESIGN 5.1 Drilling Templates — Drilling templates are derived as follows: 5.1.1 Class 150 flange drilling templates are the same as ASME/ ANSI BI6.5 and Class 125 of ANSI/ASME BI6.1. 5.1.2 Sizes 24 and smaller class 300 flanges have drilling templates which are the same as ASME] ANSIBI6.5and Class 250 of ANSI/ ASME BI6.1. ‘Sizes 24 through 36 inclusive have drilling templates which are interpolations of Class 250 of ANSI/ ASME B16. except the diameter of the bolt holes are only one-eighth inch larger than bolt diameters. Larger sizes are designed in accordance with Appendix 2 of Division 1 of Section VIIL of | ASME Boiler and Pressure Vessel Code. 5.1.3 Size 36 and smaller of Classes 400, 600, and 900 flanges have drilling templates which are extrapolations from ASME ANSI BI6.5. Larger sizes are designed in accordance with Appendix 2 | of Division I of Section VIII of ASME Boiler and Pressure Vessel Code.STANDARD PRACTICE sP-44 5.2 Flange Ring Design — The outside diameter and flange thickness of sizes NPS 24 and smaller flangesare in accordance with ASME/ ANSI BI6.5. Larger sizes are designed in accordance with Appen- | dix 2 of Division 1 of Section VIII of ASME | Boiler and Pressure Vessel Code and the flange ring shall have sufficient pressure capacity for the service based on its strength in the normalized condition. This capacity shall be substantiated by the Rules for Bolted Flange Connections, Appen- dix 2 of Division 1 of the ASME Unfired Pressure ‘Code Section VIII, with allowable design stresses as given in Annex A of this standard. 5.3 Hub Design | 53.1 Sizes NPS 24 and smaller. When the | ‘mechanical (minimum yield strength) properties of all sections of the flanges are equal to or higher than those of the pipe to be matched, the hub dimensions may be the same as those of ASME/ ANSI BI6.5. Larger sizes are designed in accord~ | ance with Appendix 2 of Section VIII of ASME | Boiler and Pressure Vessel Code. ] 5.3.2 In addition, when the minimum yield | strength of the hub portion of any flange or its representative test specimen is less than that specified for the pipe to be matched, the minimum thickness of the hub at the welding end shall be such that the product of its thickness times is yield strength (at welding end) shall at least equal the product of the specified nominal wall thickness and minimum specified yield strength of the pipe tobe matched. Under these conditions, Sizes NPS 24 and smaller flanges may also havea single taper hhub and the outside diameter of the hub at the base may be modified in accordance with ASME Section VIII Division 1 Appendix 2 calculations. 5.3.3 When the manufacturer employs this op- | tion, the flange identification should be a combina- tion of the class of material of the flange and of the pipe for which the flange has been designed. See 6.1. [15.3.4 When the hub thickness at the welding | end must be greater than the adjoining pipe, the joint design shall be as shown in any of the three sketches in Figure 1. Cop by the Mrwactuers Stngadztion Sac O The Ve And Flings nds Inc Thi tan 08 06.71:31 2005, 5.4 Welding End — The welding end shall be in accordance with Figure 2 for wall thickness (of intended mating pipe) of 0.88 in. and less. For thicker walls, refer to Figure 3. 5.5 Blind Flange 5.5.1 a) The outside diameter and thickness of blind flanges shall be as listed in Tables 6, 7, 8, 9 and 10. Thicknesses listed are based on material having mechanical properties for Grade F36 of Table I. Drilling templates are per Paragraph 5.1. Thinner flanges of higher strength material may be furnished in accordance with Annex B rules, 5.5.2 b) Blind flanges need not be faced in the center if, when this center is raised, its diameter is at least 5 in, smaller than the nominal pipe size. When the center part is depressed, its diameter shall not be greater than the gasket ID specified in Table 4 less 2 inches (I.D. - 2 = max. depression OD). 5.6 Dimensional requirements for NPS_10 and smaller shall be in accordance with ASME/ ANSI BIOS. 5.7 Flat Face Flanges — This standard permits flat face flanges in all classes, by providing flanges having either the full thickness or the thickness with the raised face removed, without reduction of the pressure-temperature ratings subject to the following provisions. 5.7.1 The thickness of a Class 150 or 300 flange from which the raised face has been removed shall be no less than the applicable dimension C of Tables 6 & 7 minus 0.06 in. 5.7.2 The thickness of a flange of Class 400 or higher from which the raised face has been re- moved shall be no less than the applicable C dimension of Tables 8, 9 and 10. 5.7.3. The flange facing shall conform with sec- tion 7.2 for the full width of seating of the gasket. 5.8 Spot Facing — All flanges shall have bearing surfaces for bolting which shall be parallel to the flange face within 1 deg. Any back facing or spot‘MSS STANDARD PRACTICE SP.44 facing required to accomplish parallelism shall not reduce the flange thickness C below the dimensions given in Tables 6, 7, 8,9 and 10. Any spot facing or back facing shall be in accordance with MSS SP-9. MARKING 6.1 Flanges shalt be market in aovordance witht the rules established in MSS Standard Practice SP-25, Standard Marking System for Valves, Fit- tings, Flanges, and Unions. In addition, the let- ters, “PL shall precede the grade symbol mark- ing. The grade symbol marked on the Welding Neck Flange shall designate the grade of material in the welding end of the hub. When flanges are produced under the option of Paragraph 5.3.1, the marking will also include the grade of the material of the pipe which the flange will match. For ex- ample, a flange having a grade F42 hub designed to be used with grade X60 pipe would contain the marking PL F42/X60 in addition to the marking specified in MSS SP-25, 6.2 Flanges in sizes NPS 10 and smaller produced to BI6.5 dimensions and complying with all other requirements of this Standard Practice shall be marked in accordance with 6.1. FACINGS 7.1, Flange Facing Finish — The finish of contact faces of pipe flanges shall be judged by visual com- parison with Ra Standards (see ANSI B46.1) and not by instruments having stylus tracers and elec- tronicamplification. The finishes requiredare given below. Other finishes may be furnished by agree- ment between user and manufacturer, 7.2 Raised Face — Either a serrated-concentric or serrated-spiral finish having from 125 1 in. to 250 #1 in, average shalll be furnished. The cutting tool employed should have an approximate 0.06 in, oF larger radius, and there should be from 44 to 55 grooves per in. 7.3. Ring Joint — The side wall surface of gasket ‘groove shall not exceed 63 microinch roughness. Cop by the Mrwactuers Stgadzton Sac O The Ve And Flings nds Ine Thi don 8 '06.71:37 2005, 7.4 Flange Facing Finish Imperfections in the flange facing finish shall not exceed the dimen- sions shown in Table 11. Adjacent imperfections shall be separated by a distance of at least four times the permissable radial projection, Protru- sions above the separations are not allowed. . CODE LIMITATIONS 8.1 A product used under the jurisdiction of the ASME Boiler and Pressure Vessel Code or of the ANSI Code for Pressure Piping, is subject to any limitation of that code. This includes any maximum, temperature limitation for a material, or a code rule governing the use of a material at a low temperature. 8.2 Flange Testing — Flanges are not required to be hydrostatically tested, Flanged joints may be subjected to system hydrostatic tests at pressures not exceeding 1.5 times the 100 F rating. FLANGE BOLTING DIMENSIONS 9.1. Alloy-steel stud-bolts threaded at both ends or full length, or bolts with hexagonal heads conform- ng to American National Standard heavy dimen- sions (ANSI B18.2.1) may be used and shall have nuts conforming to American National Standard heavy dimensions (ANSI B18.2.2). 9.2 Carbon Stee! bolts smaller than % in. shall have square heads or heavy hex heads (ANSI BI8.2.1), and shall have heavy hex nuts (ANSI BI8.2.2). Bolts % in. and larger shall have square heads or hex heads (ANSI B18.2.1), and shall have hex nuts or heavy hex nuts (ANSI BI8.2.2). 9.3 Threads of carbon steel bolts and stud bolts shall be coarse series, Class 2A (ANSI B1.1), and nuts shall be coarse series, Class 2B. 9.4 Alll alloy steel bolting shall be thread cordance with ANSI B1.1. Nominal diameters 1 in. and smaller shall be of the coarse thread series; nominal diameters 1 in, and larger shall be of the 8 thread series. Bolts, studs and stud-bolts shall have a Class 2A thread, and nuts shall have a class 2B thread.‘MSS STANDARD PRACTICE, sP-44 9.5 Bolting to Cast Iron Flanges — Where Class 10.3.2 Nominal Inside Diameter of Welding Ends 150 steel flanges are bolted to Class 125 cast iron of welding neck flanges (Dimension B in the flanges or Class 300 steel flanges are bolted to referenced Figures). Class 250 cast iron flanges, itis recommended that low strength bolting be used. If intermediate or Sizes NPS 12 to 18 inclusive £0.06 in, high-strength bolting is used, it is recommended Sizes NPS 20 and larger +012 that the mating flanges be flat faced and that full 0.06 faced gaskets extending to the O.D. of the flange be used. 10.3.3 Thickness of Hub — Regardless of toler- ances specified for dimensions A and B, the thickness of hub at the welding end shall never be 10. TOLERANCES less than 871 percent of the nominal thickness of the pipe to which the flange is to be attached. 10.1 Facings 10.4 Overall Length through Hub on Welding Outside Diameter, 0.06 in. raised face: Neck Flanges Sizes NPS 12 to NPS 24 inclusive: +0.03 in. ~ Sizes NPS 26 and Larger: +0.08 in. Sizes NPS 12 to NPS 24 incl. 40.12 in. = 0.18 in, Outside Diameter, 0.25 in. raised face: Sizes NPS 26 and larger £0.19 in, Sizes NPS 12 to NPS 24 inclusive: +0.02 in. Sizes NPS 26 and Larger: +0.04 in, 10.5 Drilling and Facing 10.2 Flange Thickness 10.5.1 Bolt Circle Diameter, +0.06 in, Sizes NPS 18 and Smaller +0.12 in, 10.5.2 Center-to-Center of adjacent bolt holes, 20 +£0.08 in, Sizes NPS 20 and larger +019 in, ~zr0 10.5.3 Eocentricity between bolt circle diameter and machined facing diameters. 10.3 Hub Dimensions (including welding ends) Sizes NPS 12 to NPS 24, incl. 0.06 in. 10.3.1 Nominal Outside Diameter of Welding End Sizes NPS 26 and larger 0.09 in. of welding neck flanges (Dimension H, in Tables 6,7, 8,9 and 10. 10.6 Sizes NPS 10 and Smaller Tolerances for fied in ASME/ ANSI Sizes NPS 12 to NPS 24 in. +0.16 i = 0.03 in. Sizes NPS 26 and larger +021 in. ‘The listing of decimal tolerances does not imply = 0.06 in. method of measurement. 7 Cop by the Manufacturers Stgadztion Sac O The Ve And Flings nds Inc Thi don 8 '06.71:33 2005,Mss STANDARD PRACTICE sP-44 14° MIN. 18° MAX. 18° MAX, (a) 14° MIN. (1:4) 18° MAX. NOTES: GENERAL: ‘When the minimum specified yield strengths of the sections to be joined are unequal, the deposited weld ‘metal shall have mechanical properties at least equal to those of the section having the higher strength, and the minimum thickness, tp, shall at least equal t times the ratio of minimum specified yield strength of pipe and flange, but not to exceed 1.5t. © Neither ty, tp, nor ty +ty shall exceed 0.5t FIGURE | —- ACCEPTABLE DESIGNS FOR UNEQUAL WALL THICKNESS") (Gee Paragraph 5.3) (0 SUPPLEMENTARY FOOTNOTE: See ASME B31 Piping Codes for additional fabrication details. Cop by the Mnwactuers Stngadzton Sac O The Ve Ant Fins nds Ine Thi tan 8 '06.71:34 2003,MSS STANDARD PRACTICE SP-44 FIGURE 2 — BEVEL DETAIL FOR WALL THICKNESS (T) 0.88 OR LESS NOTE: “) Flange sizes 24 and smaller may be furnished with 37-14° bevel at option of manufacturer. apes FIGURE 3 — BEVEL DETAIL FOR WALL THICKNESS (T) GREATER THAN 0.88, Cop by the Mnwactuers Stngadzton Sac O The Ve Ant Fins nds Ine Thi tan 8 '06.71:34 2003,STANDARD PRACTICE SsP-44 TABLE 4 — SHEET GASKET DIMENSIONS, Dimensions in inches NOM. oD. I. D. GASKET G MIN. PIPE GASKET SIZE R® 150 300 400 600 900 12 15.00 12.75 12.78 i275 | 12.78 12.78 14 16.25 14.00 14.00 | 14.00 14.00) 14.00 16 18.50 16.00 16.00 | 16.00 16.00 16.00 18 21.00 18.00 18.00 [18.00 18.00 18.00 20 23.00] 20.00 20.00 20.00. 20.00 20.00 22 25.25 | 22.00 22.00 | 22.00 22.00 = 24 27.25 24.00 24.00__| 24.00 24.00 24.00 26 29.50 26.00 27.62 27.00 26.62 26.38 28 31.50 28.00 29.50 28.88 28.38 28.38 30 33.75 30.00 31.62 30.88 30.38 30.38 32 36.00 32.00 | 33.75 33.00 32.50 32.38 | 34 | 38.00 34.00 35.62 34.88 34.25 34.38, 36 | 40.25, 36.00 | 37.62 36.88 36.25 36.38 38 38.00 | 38.00 37.75 37.50 37.00 40, 40.00 40.00 39.75 39.50 39.00 42 42.00 42.00 41.75 41.50 41.00 44 eae ae 44,00 44.00 43.15 43.50 43.00 46. Raised 46.00 46.00 45.75 45.50 45.00 48 Face, R, 48.00 48.00 47.15 47.50 47.00 50 in Tables 50.00 50.00 49.62 49.25 = 52 67.8 52.00 52.00 51.62 31.25 = 54 3810 54.00 54.00 53.62 53.25 = 56 56.00 56.00 | 55.62 55.25 = 58 58.00 58.00 $7.62 57.25 = 60 60.00 60.00 59.62 59.25 = NOTE: Outside Diameter R may be made to fit the inside diameter of the bolts to act as a locating device when making a joint in the field, however, in no case should the contact area of the gasket be Cop by the Mrwactuers Stgadztion Sac O The Ve An iting nds Inc Thi dan 9'06.71:35 2005, increased by changing the diameter of the raised face on the flange. 10SP-44 STANDARD PRACTICE Mss “soBueyy 4083¢] pure “gE 9218 10} pare|duiayuos jou are syayseD wWos-Fury, “OC'91a AWSY 295 ‘suoSuaUND 1axseS TUIOF-BuU Jo ssouEIaIO) HuNyDEUI 104 q) “ALON NOLLVAYOINI TWINAWATddAS: Sold £60 Sto} Sie | OS7'Ob | 864 €85'0 7901 S80 | OST Ob 9€ Ole 1.60 sco siet | ooo8e | Leu | sso 901 sig 0 | 000'Rxe re cord | 6.80 00st osct | 0009¢ | You | e850 wor] sis0 | ooov% | ce cOle 6.80 00ST Osc'l oscee | Sou Sar 8660 oseo | Osis Of (ord | e.80 | 00s ose | ooste [row | sero Be60 | OSLO | OOSIE| 8c_] oord [080 SLET Scrt | 00sec | tou | sero ge60 | “osc | 9 Bla 1890 Osc'l ooo! | Osece Tice €1r'O Z18'0 Ose Le bo —T] — —T ise [eo 0SL0 ooo'se | ce Fu_| SiFO_[_seoo | sro [poet ew | ino] 88901 00s of ote | Oe Ore T ser 8260 OS20 | 000Ic | 6vY | SOFO sc¥0 ‘str0 | 000 1c] I 998 er0 c1s'0 sc9'0_| Oos'8I | sow | soeo szv'0 ger'O | OOS'RI ci [oye ro [ero | sexo | cos v1 19a | soro | sevu | “sero | 00s isa soeo sto'0 ger'O | O00'ST | LSH soto $c9'0 stro | 2 H v iy | on ia | wu | aug | | oon | surg | aang | euoamso | "30 ay sun »O | sooumeH | MPA | gontg 006 ssv19 009 CINY ‘Gor'o0E SSv soypur ut suorsuaumig] (y SNOISNAWIG LAASVO INIOFONTY — § TTaVL sore] pur “ut | sypm Buu 20) ‘uoyfeuss pure ur gg’9 stApIM Bu IO} ut ave And Fitna Indust rs rs Sonéadzton Sac OF Th Thi ta 08'06.91:35 2003 Copy by the ManuMSS STANDARD PRACTICE, sP-44 Hote) TABLE 6 — CLASS 150, 285 PSI AT ATMOSPHERIC TEMPERATURE RAISED FACE Dimensions in inches HUB FLANGE DIMENSIONS DIMEN- DRILLING SIONS 2 3 ‘ oD i 3%} op Thick. | Length No.} Dia. | Dia. Fillet Eg] of of Thu | Lame | of | of of Radius E | Flange | Flange Hub End | pot} Bolt | Bolt (MIN) ° Cc Y Hub | Holes] Holes | Circle | R A (MIN) x 12 | 19.00 1.25) 450 12 [1.00 0.38 14 [21.00 138 3.00. T2_[-112 038 16 [23.50 144 00 Te [ 112 0:38 18 [25.00 156 | 3.50 16 [1.25 0.38 20 [37.50 1.69 5.69 201.25 038) 22 [29:50 1815.88 20_[ 1.38 0.38 2432.00 1.88 6.00 20_[ 1.38 038) 26 | 34.25 2.69 4.15 24 [1.38 038 28 [36.50 281 494 1:38 0.84 30[38.75 | 2.94 3.38 28138 | 0.44 32 [41.75 | 3.18 | 5.69 26 [16 0.44 34[ 43.75 | 3.25 5.88 32_ [1.62 [050 36 [ 46.00 3.56 2 [1.62 050 38 [48.75 3.44 32 [1.62 0.50 40 [50.75 3.56 36_| 1.62 0.50 42 [53.00 3.81 36] 1.62 0.50 44 [55.25 4.00 40 [1.62 0:50 46 [57.25 4.06 40_| 1.62 0.50. 48 [59.50 425 44 [162 0.50, 30] 61.75 438 44] 8 0.50 52 | 64.00 456 44 [188 0.50 | 54 [66.25 415 44] 188 050 56[ 68.13] 488 ae 88 0507] 38.[71.00 3.06 48] a8 64.00) 0.50 | 60.173.00 3.19 3211.88 60.00 | 0.50 General Notes: (©) Rating for raised face flanges is predicated on the use of sheet gaskets shown in Table 2, For matching tolerances se Section 10 © Dimensions to be specified by customer. For matching cod deta se Figures 1,2 and 3 © see Sation 5 (©) Where calculated bind thickness is less than the mating welding neck, the thicknesses were mde equal Se paragraph 55 for material requirements 2 Cop by the Mrwactuers Stgadztion Sac O The Ve And Flings nds Ine Ti don 8 '06.71:36 2005,MSS STANDARD PRACTICE ‘SP-44 rp VIITT, 7 qa ew MWA Ty aeon pe RING-TYPE JOINT TABLE 7 — CLAS L-pnoree Hote) RAISED FACE, 300, 740 PSI AT ATMOSPHERIC TEMPERATURE RAISED FACE) AND. RING-TYPE JOINTS Dimensions in inches FLANGE bIMENSIONS [hua ond ——_oAILUNG FACING DIMENSIONS ve Tack of Fags offi of | Dao RingType Soi Fit Bie | op oe weir) jsot | wot | toi | ‘Face FFI Toepmor] Mich Tumor] RR] Raais Fuge a ue poe uses {ove | ow | om’ [eieo!| oa Peg) wa | a ie 0 zit [saz] tors [20 [1s | 205 | ios | toon] osT2 | 16.500 [oaee | ReL | Oe 16 | 2550 225| 575] 1900] 20 [196 | 2280 | Vas0| 2000-0312 | vasoo[oass | Ros 03 te 27s | a100 [2269 [ose | ar a00 [oes | nee | Ome oe B00 | 2500 | 0395_| 23000” Tass | ws] Oe 1 3535 | 1700} oase | 25.000 Tose | Rar | 038 me ier as aes0 | oa | 378 oase RT| Oe ss 2950 [3186 | 0500] 39500 o TAT | ROS | OW ms 3is0-| sae | 0500 | 51500 O7eI | RE Oat Teast 33.15 [962 | 0500 | 33.150 [o7e1 1 RIE | aaa 28 | 200 | ais] 3600_[ 3675 | o.s62 | 36.000 0.906 [ RB6 | 040 24 i 075 | 086? | 38.000 [0906 | ROT | 050. m $3.00 | 0362 | 40.250” 10906 | RIE | 050 2 030 | — 2 050 2 080 % 050 2 050 = 50 050 2 00 | — 2 oso | — = 2 == T— General Nove For matching tolerances see Section 10. For welding end desi see Figures 1, 2and 3. Notes: (8) Rating for raised face langesis predicated onthe use of shet gaskets shown in Table 2 (©) Dimensions tobe specified by customer (© See Section 5 (©) Where calculated bind thicknes i ess than the mating welding eck, the thicknesses ‘were made equal See paragraph 55 for material rquiremens (©) Hub dimension for Size 4and smaller anges may vary ss explained in paragraph S32 3 Cop by the Mrwactuers Stngadztion Sac O The Ve Ant Fins nds Ine Thi dan 8'06.71:57 2003,MSS STANDARD PRACTICE SP-44 EtNote() ore) [5 BN Troe) RING-TYPE JOINT RAISED FACE TABLE 8 — CLASS 400, 990 PSI AT ATMOSPHERIC TEMPERATURE RAISED FACE®) AND RING-TYPE JOINTS. Dimensions in inches THANE DIMENSIONS DRILLING. TACING DIMENSIONS ree | opor| THICK OF FLANGE | Lay | ootadt |S ‘goit | "Bont | Hee” [Fawr acu Fie | Sie | Mange |wonesk | ai ig] thratun | ena tan | mete | cece | "oss [oat ‘i aoso | 228 | 22s sm | as |e | te 1.000 | 0469] 57 | 048 | aod n00 [238 | 238 Sae_| 1675 [ 20] ‘eae 3530 [ 2501250 Ta00_[ 20 | 150, noo [2a | 36? nad [ e150 3050 2s mir | [1 shoo a8 BI soo | 3m] 300 ar sas [350] 8 ETS] aw | aw et sa was Das | as 300 4150 S00 = ou $450 fC “ser | 5150 sas0t [on ae EE e700 te] — [= Tose 78 ese poe [oe [a Pee Dee = os [=== [== [= pose (General Note: Notes: @ Rating for aise face flanges is predicated on the use of shee gaskets shown inTable2. For matching tolerances see Section 10 ©) Dimensions tobe specified by customer For welding end detail see Figures 1, and 3, (©) See Section 5. (4 Where calculate blind thickness is es than the mating welding neck, the thicknesses were made equal. See paragraph 5.5 for material quirements (©) Hub dimension for Size 24 and smale flanges may vary a5 explained in paragraph S32. 4 Cop by the Mrwactuers Stngadzton Sac O The Ve And Fins nds Inc Th tan 08 '06.91:38 2003MSS STANDARD PRACTICE SP-44 ENote(@) no | Bote it)! | | 1 H Note ()— FAN @o— | poenre ING-TYPEJOINT raise Pace TABLE 9 — CLASS 600, 1480 PSI AT ATMOSPHERIC TEMPERATURE RAISED FACE) AND. RING-TYPE JOINTS Dimensions in inches FLANGE DMENSIORS [Woe ow | pate ——[— RSD re | opor PRR OTFLAN oad et], of [Bao [Raed C= TVEEIONT iter | rcore SE | SO CRS [Beso |atrbe Seats AS (AOS | tt | But ("HoT poe | oe. [nee [Ne |e | Ra oe te t+ txt are a ane a pan as ies aaa me eae Roe | oar Base spent es | ia ise Bae peso oar [Ret tay cos cece otis ee Soa parame oar Pee fae fOr Bie, sepia] aaa aaa S33 tase ST RL beet Oe a Taree anf sete nse} Ra_{ pat Oe St aroot a sae} oo |r tarp sar oan arasoosse RTT tae Cs Bam} ae tenes frp ear Siete OTT Ts apart en testi Sn tne Sau aor oeT Rt Eso] apart ee ot ee San Sato ata ona wa to Sata t oat Sapa Saar [sen ono [Rae 05 isan epee fa Sra aan 968 RS Toe Som tare one f a a3¢ Hares eof ats = we asta TE tas = +s} ape tae ie} fae sar = se Stor tet Haar = ae aa hae Se = tf] T3008 eat wT Sait = a Toot eo yee fa sara = t= esp sp pepe] sa t= wi General Noes: Note 2 Rating for aie face anges is predicated on te we of shes gas shown in Table 2 For matching trates se Section 10. (© Dimensions tobe spied by etm For welding end eile Figures 1, 2and 3. (© see Setion (@) Where calculated bind thcknes i ess than the mating welding neck, the thicknesses were made equal. See paragraph 5 for material requirements. (©) Hub dimension for Size 24 and smaller anges may vary as explained in paragraph $3.2 15 Cop by the Mrwactuers Stngadzton Sac O The Ve Ant Flings nds Ine Thi don 8'06.71:39 2005,STANDARD PRACTICE 7 qdesteved um paumdxa se Kr Seu uy Jamu PUR FZ 3S 30} WISUIEND GOH (9) suswarnbat yest 30)5°¢ ydeered 205 nb apou 204 sesmuan ap pou Rap Bue 34) Wey Sey SR PN HAIMA UM (py ‘ess payoads 39 01 Susu ‘Ze ur Unous s1ySK8 aos Jo sn 9p wo poreapatd st sun 20} poses 10} UNE {poe 2°1 oun 208 weep pus Bupa sO. (| wonads 25 ssuessjoy Sunareu 204 S310N [ANID veo] —[— | — osvs | oseo | ery | [eves scor] are [stu] eo| —|— | oses | osos | ery |v | aos soor | ewe | sceo | 9» ao] —|[— | —— coos | eves | ave | | coer 956 | we | env9 | ve two] —| — | —— seu | sews | eve | ve | cor crs | _ere | ost9| wy tof —|— | —— sesv | sees | eve | ve [acer is suc | oss | oF scol —|— | —— | — | J seer [vos [eve [oe | seew ‘ose_| ose _[oses | ae 950 zo | seve | stor | stos | eve | oc | vty we sc9_[osus | 9¢ 950 zwo | ovr | ova | stay | eve | oc | c9ee s08_| 059 | oss) v6 050 #990 | osee | oe | ossy | ere | oc | seve wwe se9_[ seis | te 050 wavo | scue | sete | set | ere [oc | 00st arc_| es | os | oF 00 wevo | oose | oste | scor | ere | oe | suze sco | _e9s | 099% | 8 wo aevo | see | ose | osee | wz | ce | osve veo | oss | seer] 9 oro] wu] e001 sevo | aor | sue | osse | coe | oc | osez, oss oss [oor] ve v0 taco | ooez | ooso | osse | ove | osez | ere | oe | osve sev | sty | sete] ot wo vero [ote | oso | weec | ore | wove | ooz | oc | sez | 006 oor | 00% | ote | a1 wo] su 9550 | oot | sero | wor | oser | sew | srt | oc | oom | ose ose | ose | seuz | 94 0 9550 | osm | evo | acai | svar | ove | ev: | oc | seer ce ace see] sce] wt 0 emo | 00st | erro | oser | ost | ootz | ost | oc | oso | see ere | ere [ove | er 7 af a [af fw t I “x x 3 2 ° TRON aesa] ea saggio [ a | a aa | RHO | ar pws PamH mT | yA Dae | WONTTAY oO] ons eompeed sera] ui] wend | wie [804 | ora | wom | wom | wom | ooer | uur | Soa asouomn | 2°00 | ata snoop) sms inaor Baker pane] soma | soma | son | co, SROISNAWI ONDVS SxrTInae THI an SNOISNAWIO TONVTS soyour ur suowuounq! — SUNIOPSdAL-ONTUGNV @d Va GASIVA TUN.LVYAANAL AAHASOWLY LV ISd 0277 '006SSV 1) — OT T1AVL soya aasiva 16 Copy by the Mnwoctuers Stncardztion Society O The Ve Ant Fins nds Inc Thi don 808.7140 2005,Mss STANDARD PRACTICE sP-44 | TABLE 11 — PERMISSABLE IMPERFECTIONS IN FLANGE FACING FINISH | MAXIMUM RADIAL® MAXIMUM DEPTH AND RADIAL PROJECTION OF IMPERFECTIONS | PROJECTION OF IMPERFECTIONS, NPS WHICH ARE NO DEEPER THAN WHICH ARE DEEPER THAN THE BOTTOM OF THE ‘THE BOTTOM OF THE SERRATIONS, IN. SERRATIONS, IN. 12-14 031 0.18 16 0.38 0.18 18-24 0.50 0.25 26-36 0.50 0.25 38-48 0.56 0.28 50-60 0.62 031 NOTES: “ Imperfections less than half the depth of the serrations shall not be cause for rejection, ‘See paragraph 7.4. ‘A radial projection shall be measured by the difference between an inner radius and an outer radius encompassing the imperfection where the radius is struck from the center line of the bore. 7 Cop by the Mrwactuers Stgadzton Sac O Te Ve An Fins nds Inc Thi tan 09 06.7141 2005,STANDARD PRACTICE sP-44 ANNEX A DESIGN CRITERIA This Annex is an integral part of this Standard Practice which is placed after the main text for convenience. These flanges were designed in accordance with the formula of paragraphs UA 45 - UA 59 (inclusive) of Section ‘VIII Unfired Pressure Vessel, Division 1. (1950ed.) Currently, the equivalent paragraphs are found in Appendix 2 of ASME Section VIII Division 1. This Annex is presented as a description of the basis for this Standard. Any deviations from the dimensions, material, or provisions of this standard are the responsibility of the User/ Designer. The maximum allowable stresses were established as follows. Longitudinal Hub Stress Radial Flange Stress ‘Tangential Flange Stress Average Stress Bolt Stress (244 and Smaller) Bolt Stress (Larger than 244”) 1. The suggested ASME Section VIII, Division 1 values of 3700 and 2.75 for Y and M factors of 0.06 in. thick, flat, asbestos ring gaskets were assumed. The widths of the gaskets were established as those whose surface areas would be at least twice the new bolt area. 3. For the Class 300, 400, 600 and 900 flanges, the slope and the O.D. of the hub at the base are designed for welding ends having equivalent yield strength and thickness as those of the mating pipe. ‘The wall thickness of the intended mating pipe was based upon API SLX-52 with a 0.68 design fac- tor for the NPS 26-36 sizes, and API SLX-65 with | 0.72 design factor for the NPS 38 and larger sizes. When the manufacturer of the NPS 26-36 sizes elects to utilize the alternative permitted in para- graph 5.3.1, or when the mating pipe has a minimum specified yield strength exceeding Cop by the Mrwactuers Stgadzton Sac O Te Ve An Fins nds Inc Thi tan 09 06.7141 2005, 18 incl. SIZES 38-60 it ksi 8 25 BRRR 65,000 psi, it will be necessary for him to re- calculate the design in accordance with the re- quirements of paragraph 5.3.1. ‘The design of the 38 NPS and larger sizes of the 300 and higher classes of welding neck flanges is predicated upon the flange material having a mini- ‘mum specified yield strength of at least 42,000 psi in the ring section of the flange and a minimum yield at the welding end at least equal to that specified for the mating pipe. When the yield strength of the welding end of the flange is less than specified, compensation in accordance with paragraph 5.3.1. may be made, but the hub slope and diameter at larger end must be preserved. . The design of all sizes is predicated on the use of hheat treated carbon stee! bolt studs for Class 150 flanges and alloy steel bolt studs for Class 300, 400, £600, and 900 flanges. Bolt diameters shall be 4 in. less than the bolt hole sizes shown in the tables.Mss STANDARD PRACTICE sP-44 ANNEX B BLIND FLANGE DESIGN CRITERIA This Annex is an integral part of this Standard Practice which is placed after the main text for convenience. Blind flanges were designed in accordance with the formula of Paragraph UG34 of Section VIII (Pressure Vessels, Division I) of the ASME Boiler and Pressure Vessel Code. The thicknesses listed in Tables 6, 7,8, 9 and 10 were based ‘on material having mechanical properties for Grade F36 of Table | with allowable stresses as listed below: SIZES 26-60, —KsI_ Blind Flange Stress 26 (1.5x17.5) ‘Where the calculated blind flange thickness is less than the mating welding neck, the thicknesses were made equal to the welding neck thicknesses. Blind flanges may be produced using any of the higher strength grades of materials listed in Table 1. The thicknesses ‘may then be reduced in accordance with the following formula, but in no case shall they be thinner than the corresponding welding neck flange: RE Reduced blind flange thicknesses based on higher grade material. E® = = Present blind thickness based on F36 grade material (See Tables 6-10). 1 Tensile strength of higher grade material from Table 1. Blinds produced to a thinner thickness from higher strength material should be identified in the marking with the higher grade material designation. All other marking required by Section 6 shall be included. NOTE: ? E* shall not be less than the corresponding welding neck flange thickness “C”. 19 Cop by the Mrwactuers Stgadzton Sac O Te Ve And Fins nds Inc Thi lan 09'06.1:49 2005,Mss STANDARD PRACTICE, sP-44 | ANNEXC | Referenced Standards and Applicable Dates This Annex is an integral part of this Standard Practice which is placed after the main text for convenience. ANSI, ANSI/ ASME, ASME/ ANSI, ASME B1.1-1989 Unified Inch Screw Threads BI6.1-1989 Cast Iron Pipe Flanges and Flanged Fittings BI6.5-1988-92 add Pipe Flanges and Flanged Fittings B16.20-1993 Ring-Joint Gaskets and Grooves for Steel Pipe Flanges B16.47-1990-92 add Large Diameter Steel Flanges BI8.2.1-1981(R 1992) Square and Hex Bolts and Screws (Inch Series) BI8.2.2-1987(R 1993) Square and Hex Nuts (Inch Series) B31.1-B31.8-1994 B46.1-1985 Boiler and Pressu ASTM A 53-930 A 105-92 A 106-93 A 193-930 A 194-940 4307-920 A320-94a A 350-93 A 354-920 A 381-93 A449.92 453-92 A 540-92 A 694-93, A 707-92 API SL MSS. SP-9-1992 SP-25-1993 Cop by the Manufacturers Sandal Thi lan 09'06.1:49 2005, Code for Pressure Piping Surface Texture, Surface Roughness, Waviness, and Lay ie Vessel Code 1992 Edition (including addendum) Pipe, Steel, Black and Hot-Dipped, Zinc Coated, Welded and Seamless Forgings, Carbon Stee!, for Piping Components ‘Seamless Carbon Steel Pipe for High-Temperature Service Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service Carbon and Alloy Steel Nuts for Bolts for High-Pressure Carbon Steel Bolts and Studs, 60,000 PSI Tensile Alloy Steel Bolting Materials for Low Temperature Service Forgings, Carbon and Low Alloy Steel, Requiring Notch Toughness Testing for Piping ‘Components Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners Metal-Are-Welded Steel Pipe for Use with High-Pressure Transmission Systems Quenched and Tempered Steel Bolts and Studs Bolting Materials, High-Temperature, 50 to 120 ksi Yield Strength, With Expansion Coefficients. Comparable to Austenetic Steels. Alloy-Steel Bolting Materials for Special Applications Forgings, Carbon and Alloy Steel, for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service Flanges, Forged, Carbon and Alloy Stee! for Low-Temperature Service Line Pipe, Thirty-Ninth Edition, May 1991 Spot Facing for Bronze, Iron and Stee! Flanges Standard Marking System for Valves, Fittings, Flanges and Unions ion Sac OF The Ve And Flings nds IneMss STANDARD PRACTICE ANNEX C Referenced Standards (con’t.) Publications of the following organizations appear on the previous page: ANSI American National Standards Institute, Inc. 11 West 42nd Street, 13th floor, New York, NY 10036 API American Petrolcum Institute 1220 L Street, N.W., Washington, D.C. 20005-8029 ASME The American Society of Mechanical Engineers 345 East 47th Street, New York, NY 10017-2392 ASTM American Society for Testing and Materials 100 Barr Harbor Drive, West Conshohoken, PA 19428-2959 Mss Manufacturers Standardization Society of the Valve and 127 Park Street, N.E., Vienna, VA 22180-4602 an Cop by the Mrwactuers Stngadzton Sac O The Ve Ant Flings nds Inc Thi an 09°08." 7003 ittings Industry, Inc.Seezoos P6200 SP.25-1090 Spaz-i000 Shao Pt 1006 Seas 1808 es1-2000 Sess 908 ‘9P.4-1900 3P55.2001 sp.se-1903 650-1000, S.651999 Sh-00-1997 Seeo-t008 SP-70-1998 seri997 Se.72:1090 6-75-1990 Sete ‘p.40-1957 $P.a12000 Seaz-992 ‘Spas-1968 Sha6-1997 ‘sear-iset Shae 1903 ‘$6.20:2000 ‘Spa1092 Seaz-998 sP9t998 '$6.95:2000 P9798 8P95-1994 SP101-1889 se021869 ‘Seioa99s Setbea9s SP105.1096 ‘Seto? ‘Set08-197 Se410906 ‘seat.2o01 SPD 1969 Sette ao0t SP116-1006 setie-t896 SP19-1906, Se20-1887 Shai-t887 sP221057 Set2e001 'SP125-2000, '3P128-2000, ‘sezr-200% List of MSS Standard Practices (Price List Available Upon Request) Standard Fines for Contact Faces of Pipe Fanges and Cennectg-End Flanges of Vales and Ftings ‘Spot Facing fr Bron, iron and Stee! Farge ‘Standard Marking Sytem For Valves Feng, Flanges and Unions Class 150 Corosion Resta Gate, Gbe, Angle and Check Vales wih Flanged and But Weld Ends (OF) Wrought Stamess Sel Butea Fenos (01) Stel Ppsine Flanges {ypats and Oran Connactens Class 1SOLW Carosion Ressler Cas Flanges and Flange Fangs ‘Quaty Standers for Ste Costngs end Forgings or Valves. Fanges a1 Exaninaton Mato ‘Gumay Standard for Stoel Casings for Valve, Flanges. and Figs and Other Piping Components - Redagraphie Examination Method ‘Gusty Stanard for Ste! Castings for Vabes, Fanges, Pings. and her Ppirg Components» Vil Metod for Evaluation of ‘SudaceInopdraes Pipe Mangers and Supports - Material, Design end Manufactre ‘Comeectng Flange Jt Between Tepeng Sleeves nd Tapp Vato Presure Testing of Stel Vatves High Pressize Chemical Indus Flanges ond Threaded Subs fr Use wih Lens Gaskets High Pressure Buterty Vas wih Ofset Design pe Hangers and Supports Saecton ard Appleton Catron Gata Vas, anged and Treaded Eres. Gray ron Swing Check alos, Flangd and Thea Ends Bal Valves wih Flanged or us Wiang Ende ter General Service (f 8) Brazing Jones for Weupht and Cast Copper Aloy Sle ont Pressure Ftings Speeteation fo: High Test Wrought Sut WilingFitngs (00) Gucens ter Pge Support Contractual Reaonships aut ron Pug Vales, Flanged and Tveaded Ends Bronze Gate, Gob, Angi ad Chock Vales ‘Slaess Stow, Gornetess, Flanged, Kate Gate Valves ‘atv Prestire Tesing Meede Clase 3000 Stew Pipe Unars, Socket Weng and Tread Cast ron Globe & Angle Valves, Flanged and Treaded Ens ‘Guitetnes for etic Daten Standars fr Valves, Flanges, Fangs and Actuators (86) Facioy Mae ButWeking Figs for Cass 1 Nucea Ppng Appeatons (01) iopragm Vas Pips Hangar and Suppor - Fabreaton and instaton Practices (iden on Teeinclgy for Pe Hangers and Supports (88) Gucalins for Manual Operations of Vanes ‘uty Standart for Ste! Castings and Forgings for Valves, Flanges, and Figs and OMer Ping Componente-igud Penetant {Gusty Std Yor Fare end Manenste Stet Casings for Ves, Flanges. and Figs and Otter Pipirg Components Users Examination Method ‘Swaga() Nips and Bu gs Guietnes en Terinoogy for Valves and Finge Integraly Reiorce Forged Branch Out Figs Socket Vieldng, headed and Sutweldng Ends Protcve Coatings for the Ineo of Valve, nya, and Fnge (ot) lnstument Vales ‘Gusticaton Requrements fr Eastomer Oaphrgms for Nuclear Dapragm Type Vales Par-Tum Vawe Acuator Atachmer-Fange ana Oiing Comeenent Omens.one ard Performance Characters Miss-Tur Vie AcustorAtaclmert- Flange en Dring Cortoonert Diersens and Perfomance Cheracterstics (fo) Wrought Copper and Coppes Alby inser Figs tor Poybuylene Systems \Wecupht Copper Sar sat Pressure Figs (or) Insvurent Valves for Cove Appeatons (95) Cant Copper oy Panges and Panged Figs, Cass 125, 150 and 300 {& 00) Tansion Unon Fitngs for Joring Metal and Pasi Products estat Seated Cast on Eccania Pug Vater, ‘Welded Fabresiow Coppe Soe Jot Pressure Ftngs Bat Valves Threaded, Socetelding Soke Jont Grooved and Flared Ends {Grayston and Ovetie-on Taping Stoves ‘Guat Stantara for Evaluton of Car Surface Fishes - Val an Tale Method, This SP must be slé wit a 1-sutace, tee ‘Smandonal Cast Surface Compara, whch lea necessary pat cf the Stade ‘Aaiional Comparators may be sléteparaely st $2500 each. Same quily scouts apply on tot oder. ‘Comecing JontbetacenTappirg Machines and Tappig Vas CCrrosen Resistant Pip Fangs Thea and Soc! Welsng, Class 180 and 1000 ‘Seroe Line Valves and Figs fr Dreking Wate Systems Compact Stel Globe & Check Valves - Flanged, Flangelss, Treades & Wesing Ends (Chemical & Petolum Reiter Service) ‘Betad End Socket Welding Fits, strless Sle end Copper Nickel Fenble Graphs Pacing Systm for Rng Stom Stel Vales (Design Requremeris) ‘Qlfcaton Testing Moods fr Stor Packing Fig St Sto! Vales Paste insti all Vales "Nem Ferrous Treaded and Soder-Jont Unens fr Use WN Copper Wistar Tube Fabveated Tapping Sleves Gar ton and Duct on In-Line, Sing-Loaded. Centr Guided Check Valves ‘Stel Line Speng-Ashted Conor Gused Check Valvos Bracing for Png Systems Seamic-Wind-Dmanic Design. Selacton,Apalaton Frings and Other Piping Comperas- Magnet Partie (YEAR) Indeates year standard reafred wineutsubtanive charges ‘A irge_numter of former MSS Pracices have been approved by he ANSI ot ANS! Stardars, pulsed by eter. In order e manana single souce ‘fathonative nlomason, the MSS withdraws Me Standard Practon n such cates Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, N.E., Vienna, VA 22180-4620 + (703) 281-6613 Fax # (703) 281-6671 Cop by the Mrwactuers Stngadztion Sac O The Ve And Flings nds Ine Ti tan 08 06.144 2005,