... FLANGE, SOCKET WELD FLANGE.LAPJOINT FLANGE, THREADED FLANGE. RING TYPE JOINT FLANGE.Pressure Class : 150, 300, 400 , 600 , 900, 1500 , 2500* ... : (ORIFICE FLANGES) WELDING NECK FLANGE, SLIPON FLANGE, THREADED FLANGE.Pressure Class : 300, 400 , 600 , 900, 1500 , 2500* ASTM/ANSI ... ,1500, 2500* MSS SP44 : WELDING NECK FLANGE, BLIND FLANGE.Pressure Class :300, 400 , 600 , 900* API 6A : WELDING NECK FLANGE ...