So I got a job to quote. Part is spec'd as made from 304SS pipe, 5" SCH 80 welded pipe. That's 5.06" OD and 4.81" ID. Pipe is about 41" long, gets two stub ends welded in. They want it finished at 5.000" +.001"/-0 so only 1/32" per side stock to start as fabbed! I'm worried about movement during the cutting of that OD. 304 always moves quite a bit in my experience. So I would generally expect to solve that problem with thermal stress relief. But then I may end up with a warped part that needs straightening. Which will add stress back in that may get relieved when that outside surface is removed. Ugh. Should have been designed with a thicker wall pipe to start. Oh, and they also want to spin it at 1200 RPM. This is not going to work out well. For their price I mean. Maybe I need to ring them up. What are your thoughts?