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Thanks pennpiper on suggesting to get in the mix with WOL manufacturers - it will certainly be interesting. That aside what is your opinion of the remark about overlapping heat affected zones? At work I'm pushing the design to incorporate a minimum distance between weld lines such that HAZs...

Thanks rustbuster for clearing up the confusing about full and reducing. And thanks to rneill for giving me a document to go to - I will have a closer look on monday. Great help! Quote rneill, "Note: WOLs are used on piping but not vessels (as they are to an MSS standard and not an ASME...

I'm in the business of quality checking high pressure vessels and there is a frequent use of weldolets (depending on project pressures range from 300# to 2500#) for connecting Sch 40 branch pipes to similar run pipes. I've got MSS-SP-97:2006 on my desk and I am a little confused as it is not...