Would like to ask for an opinion. My company already run PQR for D1.6 using 1.5mm thickness ss304 groove weld position 3G. WPS thickness range that cover this test would be 1.5mm~3mm.
My question would be, if I’m able to create D9.1 WPS using PQR of D1.6 as my supporting document so that I can obtain welding range of 0.75~3mm for me to weld non-structural part? Is this practice has been used in the industry before?