MSS SP - 83 2001 Class 3000 Steel Pipe Unions Socket Welding and Threaded

MSS SP - 83 2001 Class 3000  Steel Pipe Unions  Socket Welding and Threaded

MSS SP - 83 Practice establishes envelope and  other essential dimensionals, finish, tolerances, testing, marking, material, and minimum performance  requirements for forged carbon and stainless steel  pipe unions, socket welding and threaded ends.

These unions shall be designated as Class 3000  socket welding or threaded and shall carry ratings  shown in Table 1