... /F5/F9/F11/F22/F91/Etc.Duplex stainless steelASTM A182 F51/F53/F55/F60 Nicke alloysNickel ... FLANGE, SOCKET WELD FLANGE.LAPJOINT FLANGE, THREADED FLANGE. RING TYPE JOINT FLANGE.Pressure Class : 150, 300, 400 , ... , 600 , 900* API 6A :WELDING NECK FLANGE, THREAD FLANGE,BLIND FLANGE.Pressure :2000Psi, 3000Psi, 5000Psi, 10000Psi, 15000Psi ... special design are warmly welcome. Stainless Steel Flanges Stub End