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Up Topic American Welding Society Services / Technical Standards & Publications / 6GR PQR- Range Qualified
- - By Nalla (***) Date 10-04-2009 10:45 Edited 10-06-2009 00:06
Dear Friends
Pls advise if 6GR PQR can be used to write new WPS for one-sided -single-bevel joint preparation( Cover plate-accessible from 1 side only & cannot fit backing strip ) Single Bevel Joints?
Otheriwse would it be better to use single V / Bevel RQR for single bevel ( 45 deg ) without backgouging

Weld Process - SMAW / Charphy Value - min  -20 deg celcius / Mat Grade DH36 / Roor Pass using LB52U followed by LB52.

Thanks in advance
Parent - - By Lyms Date 10-07-2009 14:49
According to AWS D1.1 Paragraph 4.9.1.1 then it can be used for a WPS with one side single bevel joint preparation. It also can be used for single V provided that 3.13 are fulfiled.
Parent - - By waccobird (****) Date 10-07-2009 14:56
4.9 is CJP Groove Welds for nontubular connections, 4.9.1.1 is on corners or t joints.
4.12 is CJP for tubular connections
Parent - - By Lyms Date 10-08-2009 05:03
What I mean is if it is the same configuration, then you can apply.
Parent - By Nalla (***) Date 10-11-2009 01:29
Dear Friends
Regardless of Pipe Dia. 6GR Welder can also weld pipe butt joint after GTAW backing weld ( root pass ) by anoter welder.Am I right?
Thanks
Up Topic American Welding Society Services / Technical Standards & Publications / 6GR PQR- Range Qualified

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