American Welding Society Forum
Can anyone explain the difference from A 6G and a 6GR. I know what the difference is regarding the actual test - i.e a restrictor plate and normally the joint type but not essentially.
Does the 6GR qualify for structural pipe and the 6G does not?
Any help would be appreciated.
I think you are mixing ASME with AWS. The applicable references that define weld positions are:
ASME - QW 122 and QW 461.4 (6G)
AWS - Table 4.1 and Figure 4.4 (6G and 6GR)
I don't think ASME sect. IX had a provision for a 6GR qualification. If you qualify in 6G pipe position you are qualified in all positions.
I believe 6GR is still an ASME IX position but will have to verify. In a nutshell, 6GR is for limited accessibility ~ I can't remember the exact numbers but someting like 18 inches (or less)... will do a follow-up after verifying.
Some may confuse the R in 6GR with an R in 2GR or 5GR which is used to connotate rolling the joint while welding in a stationary position. Don't think the R has ever been equated with rolling for the 6G position (45 degree angle to vertical/horizontal).
6GR is definitely a reference to AWS and limited accessibility.
Thanks for this reply. In fact thanks for all the replies. 6GR is infact an ASME position and you have confirmed my thoughts in that it is for restricted access.
The 6GR position is for T,K,Y connections. See D1.1 Para 4.26. This will indicate the situation is which the 6GR test is required. ASME has no such requirement.
I agree with Mr. Pipewelders response.
If ASME IX does in fact make reference to a specific 6GR qualification test position I am interested in learning what QW paragraph that is found in. there is a "Special Positions" provision, (QW303.3) that is an option that a fabricator may use to qualify welding in a specific orientation.
The only position pipe is rotated for performance qualification is 1G. Pipe may not be rotated in 2G, 5G, or 6G. (Both AWS and ASME).
Can you pls explain in detail if possible "6GR is still an ASME IX position"
6GR is not an ASME IX position. Sorry for my earlier post, I was recalling a requirement from a job specification.
Powered by mwForum 2.29.2 © 1999-2013 Markus Wichitill