Thanks for your help on my questions, much appreciated.
I have another one though, How do we work out the maximum interpass temperature for a wps? Iv’e been looking in as1554.1 and I can’t find out how. An example off an old pqr from work says interpass temp for passes 1.-ambient, 2.-105, 3.-135, 4.-115, 5.-90, then on the wps the max interpass is 250’c
Thanks!