as per ASME (BPVC) SECTION IX QW-452.1(b) thickness of weld metal qulified:
Thickness, t1 of weld metal in the coupon, in(mm) thickness of weld metal qualified
1/2(13mm) and over with a minimum of three layers maximum to be welded
May I think that if a welder weld a 13mm thick coupon with above three layers and pass the test, he can weld any thickness material?
I am appreciated to any reply.