Good idea. The extra clearance in raising the new expansion joint would be welcome, too. The weld engineers at this site have accepted my suggestion for the single bevel. Thanks to metengr for the documentation to back up my argument. The total cost savings for this weld is about $18,000, and...
I have a weld prep that must comply to B31.1, but is not on round pipe, but on a 2'x6' rectangular duct made of 3/4" low carbon plate. The pressure is less than 300#.
What I want to do is to prep the weld with a square cut (no bevel) on one side, and a 45 degree bevel on the other. 1/16" gap...
