... NECK FLANGE, SLIP-ON FLANGE, BLIND FLANGE, HIGH HUB BLIND FLANGE, SOCKET WELD FLANGE. LAPJOINT FLANGE, THREADED FLANGE. RING TYPE JOINT FLANGE.Pressure Class ... ANSI B16.47(SERIES A & B): WELDING NECK FLANGE, BLIND FLANGE.Pressure Class: 75, 150, 300, 400, ... WELDING NECK FLANGE, BLIND FLANGE.Pressure Class: 300, 400, 600, 900* API 6A: WELDING NECK FLANGE, THREAD FLANGE, BLIND FLANGE.Pressure: 2000Psi ...