... FLANGE, THREADED FLANGE. RING TYPE JOINT FLANGE.Pressure Class: 150, 300, 400, 600, 900, 1500, 2500* ASME/ANSI B16.47(SERIES ... FLANGES) WELDING NECK FLANGE, SLIPON FLANGE, THREADED FLANGE.Pressure Class: 300, 400, 600, 900, 1500, 2500* ASTM/ANSI B16.48: ( Figure ... * MSS SP44: WELDING NECK FLANGE, BLIND FLANGE.Pressure Class: 300, 400, 600, 900* API 6A: WELDING NECK FLANGE, THREAD FLANGE, BLIND FLANGE ...