... , THREADED FLANGE. RING TYPE JOINT FLANGE.Pressure Class: 150, 300, 400, 600, 900, 1500, 2500* ASME/ANSI B16.47(SERIES A & B): WELDING ... NECK FLANGE, BLIND FLANGE.Pressure Class: 75, 150, 300, 400, 600, 900* ASME/ANSI B16.36: (ORIFICE FLANGES) WELDING NECK FLANGE ... , 400, 600, 900, 1500, 2500* ASTM/ANSI B16.48: ( Figure-8 blanks)Pressure Class: 150, 300, 400, 600, 900, 1500, 2500* MSS SP44 ...