Piping Material Specification 1CB3S01, Class 150, Killed Carbon Steel, Socket Weld, 0.188"C.A. [Complete Revision]
standard by Process Industry Practices, 03/01/2017

Piping Material Specification 1CB3S01, Class 150, Killed Carbon Steel, Socket Weld, 0.188"C.A. [New Practice]
standard by Process Industry Practices, 07/01/2011