... .LAPJOINT FLANGE, 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 ... , 2500* ASTM/ANSI B16.48:( Figure-8 blanks)Pressure Class :150, 300, 400 , 600 , 900,1500, 2500* MSS SP44 :WELDING NECK FLANGE ...