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when a welder is qualified with P1 to p1 ,whether he is qualified to do p1 to p11.if the answer is yes, how about ss welding becse here purging is needed
pls rply me
A welder is qualified to a certain process (WPS→PQR→WQR)
If you look at QW484 - then there are quite a few places the material is defined- description, base metal,... along with the above (WPS and PQR Nos)
So the welder qualified for material group (P1 here), for a thickness range, to a WPS/PQR is only limited to that.
Base Metal Qualification
Re: base metal qualification
