... Spectacle Flange Weld Neck,Slip-On,Blind,Socket Weld,Lap Joint,Threaded,Orifice Flange,Swivel Flange,Spectacle Blind,Etc. Size ... FLANGE, SOCKET WELD FLANGE.LAPJOINT FLANGE, THREADED FLANGE. RING TYPE JOINT FLANGE.Pressure Class : 150, 300, 400 , 600 , 900, 1500 ... FLANGE.Pressure Class :300, 400 , 600 , 900* API 6A : WELDING NECK FLANGE, THREAD FLANGE,BLIND FLANGE.Pressure : 2000Psi, 3000Psi, 5000Psi ...