... SLIPON FLANGE, THREADED FLANGE.Pressure Class :300, 400 , 600 , 900, 1500 , 2500(4).ASTM/ANSI B16.48:( Figure-8 blanks)Pressure ... Class :150, 300, 400 , 600 , 900,1500, 2500(5).MSS SP44 :WELDING NECK FLANGE, BLIND FLANGE.Pressure ... :300, 400 , 600 , 900(6).API 6A :WELDING NECK FLANGE, THREAD FLANGE,BLIND FLANGE.Pressure :2000Psi, 3000Psi, 5000Psi, 10000Psi, 15000Psi, 20000Psi ...