Hi LittleInch,
For wonky pipes or fittings, B31.3 tells you first to use pipe materials conforming to standards (A106,A234,etc.), these standards have their own fabricating acceptance criterias. Not complying with these standards will also not comply with the construction code.
PFIs standards...
Hi guys, Im out of town now n dont have the code on hand. The 3 degr. is clarified in a code interpretation refered to joint angular deviation. So if engineering specifications dont address this you can use this value as a mandatory upper limit.
Tman1, according to B31.3 angular distortion on a butt weld joint is limited to 3º, any other acceptance criteria should be established by engineering design.
Read Requirements in 330.1.1. "the thickness intended is that of the thicker component measured at the joint".
In sketches 3 & 5 you have to check three welds individually.
Check Appendix N, if your plates are correctly documented and are compatible with the ones listed in the 650 standard, you should have no further problems.
