MSS SP 97:2012
MSS SP 97:2012 Integrally Reinforced Forged Branch Outlet Fittings - Socket Welding, Threaded, And Buttwelding Ends Specifies essential dimensions, finish, tolerances, testing, marking, material, and minimum strength requirements for 90 and 45 degree integrally reinforced forged branch outlet fittings of buttweldin