Bill,
Good point. And a clarification seems required.
This seems also to tie into the old argument of whether or not the tolerances of Figs 3.3. and 3.4 are accumulative or not.
So, I would say that if accumulative, you have a possible 20deg that can be added to the 30deg requirement to make a possible 50deg. Problem solved.
If not accumulative as many think, I have always wondered how a fitter should know whether or not the detailer has already taken advantage of the tolerances.
Or is the code expecting fitters to constantly verify detailers by referencing Fig 4.3?
Or, is there no tolerance AT ALL in Figs 4.21 and 4.22?
Interesting that Fig 4.3 would allow +10 and -5 for the prequal but the performance qual Figs would mention nothing of tolerances.
Clearly the code committee did not have Semi Auto SAW in mind.
So, IMO, you either have to qual a procedure to qual your welders, or go with 40deg and request the EOR wave the 5deg. Which is quite reasonable.