American Welding Society Forum
Can we use the provision of referring to equivalent material grouping as per ISO 15608 (as specified in AWS B2.1), when writing a WPS without qualifying the unlisted materials separately.
Production joint is made of EN S275JR to S355JR.
Qualified WPS/PQR with A516 GR 70 as base material in PQR exists. Can we make a WPS stating that all Group 1 materials can be welded including S275JR and S355JR, by referring to the grouping system provided in AWS B2.1?
Seek your Engineer's approval whether you can apply Clause 3.4 of D1.1
Powered by mwForum 2.29.2 © 1999-2013 Markus Wichitill