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6GR Test Interpretation

This document provides responses to inquiries about welding qualification tests specified in the AWS D1.1 Structural Welding Code. It clarifies that for 6GR position tests: 1) Machining the inside of the heavier wall pipe to match the other pipe before radiographic testing is permitted. 2) "Complete joint penetration" refers to the weld filling the groove and fusing to the thinner base metal. 3) Machining metal from the thicker wall pipe to obtain a uniform bend test specimen is allowed. 4) Machining the inside of the heavier wall pipe to match the other pipe for tension tests is permitted.

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592 views1 page

6GR Test Interpretation

This document provides responses to inquiries about welding qualification tests specified in the AWS D1.1 Structural Welding Code. It clarifies that for 6GR position tests: 1) Machining the inside of the heavier wall pipe to match the other pipe before radiographic testing is permitted. 2) "Complete joint penetration" refers to the weld filling the groove and fusing to the thinner base metal. 3) Machining metal from the thicker wall pipe to obtain a uniform bend test specimen is allowed. 4) Machining the inside of the heavier wall pipe to match the other pipe for tension tests is permitted.

Uploaded by

sengheel
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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American Welding Society

550 NW LeJeune Road

Miami, Florida 33126


AWS D1.1 Interpretation

Subject:
Code Edition:
Code Provision:
AWS Log:

6GR Test
D1.1-84
Table 5.10.5 and Figure 5.21A
D1-85-029

Inquiry:

(1) In the welded 6GR test joint (Figure 5.21A) is it permissible to machine the ID of the
heavier wall pipe to the other pipe before performing radiographic examination?
(2) In joints between parts of unequal thickness does the term complete joint penetration refer
to the situation where the weld metal completely fills the groove and is fused to the thinner base
metal throughout its total thickness?
(3) When removing side bend specimens from the 6GR welded test joint, is it permissible, prior
to bending, to machine sufficient metal from the thicker wall pipe section to obtain a uniform
test specimen cross section?
(4) When removing test specimens from the 6GR welded test joint for tension testing, is it
permissible to machine the ID of the heavier wall pipe to the ID of the other pipe to obtain a test
specimen of uniform cross section?
(5) For qualification of T-, Y-, and K-connections, is it permissible to use job size pipe?
(6) In qualifying in the 6GR position, may job size pipe of different wall thickness other than
shown in Figure 5.12A be used?
(7) Does procedure qualification of pipe or tubing in the 6GR position qualify for all positions
of plate and pipe welding?
(8) Are there prerequisites for procedure or personnel qualification?

Response:

(1) Yes, if so stated in the contract documents. (See also 6.10.3 of the Commentary.)
(2) Yes.
(3) Yes. Figure 5.10.1.3H shows the pipe thickness the same as the size of the weld.
(4) Yes. In AWS D1.1-86, Figure 5.10.1.3F, the specimen thickness is shown as being uniform
throughout the test specimen except for the edges of a pipe specimen.
(5) Yes. See Table 5.10.1-2.
(6) Yes. The specific thickness and root high-low conditions need not be met, but the
thickness differential between the pipes should be maintained to the extent possible. (See Table
10.12, Single Welded T-, Y-, and K-Connections, Other.)
(7) Yes.
(8) No. The contractor need only have a qualified (or prequalified) joint welding procedure for
the work to be performed; the contractor only needs to have qualified personnel for the work
they will perform.

AWS D1.1, Structural Welding CodeSteel, is prepared by the AWS Structural Welding Committee. Because the Code is written in the
form of a specification, it cannot present background material or discuss the committees intent.
Since the publication of the first edition of the Code, the nature of inquiries directed to the American Welding Society and the Structural
Welding Committee has indicated that there are some requirements in the Code that are either difficult to understand or not sufficiently specific,
and other that appear to be overly conservative.
It should be recognized that the fundamental premise of the Code is to provide general stipulations applicable to any situation and to leave
sufficient latitude for the exercise of engineering judgment. Another point to be recognized is that the Code represents the collective experience
of the committee; and, while some provisions may seem overly conservative, they have been based on sound engineering practice.
(E:\d1\30. interpretations\official interpretations\d1.1\d1-85-029.doc)

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