ASME Boiler and Pressure Vessel Code section 9 2

[CandCQC]

Can I use my PQR for p no.1 group no. 2 steel on any steel in that P no. and Group no. or do I have to qualify each type of steel. It seems to me I should be able to have the one PQR for this type of material but I cant find it in the code book in black and white to ease my worries?

 

[metengr]

Go to QW-250 and see what essential variables regarding base material P-No and Group No control the WPS for a particular process or processes.

 

[DVWE]

Review QW-200.3. That sums it up nicely.