... Socket Weld, Lap Joint, Threaded, Orifice Flange, Swivel Flange, Spectacle Blind, etc. 2.Size 1/2"-72" 3.Class 150#, ... NECK FLANGE, SLIP-ON FLANGE, BLIND FLANGE, HIGH HUB BLIND FLANGE, SOCKET WELD FLANGE. LAPJOINT FLANGE, THREADED FLANGE. RING TYPE JOINT FLANGE. Pressure ... , 400, 600, 900 API 6A: WELDING NECK FLANGE, THREAD FLANGE, BLIND FLANGE. Pressure: 2000Psi, 3000Psi, 5000Psi, 10000Psi, 15000Psi, ...