Piping Material Specification 1SA0B02 Class 150, 304/304L Stainless Steel, Butt Weld, 0.000" C.A., Process
standard by Process Industry Practices, 12/05/2005

Piping Material Specification 1SA0B02 Class 150, 304/304L Stainless Steel, Butt Weld, 0.000" C.A., Process (PTFE Packing/Gaskets) [Complete Revision]
standard by Process Industry Practices, 03/01/2013