... , elbow, tee, reducer, pipe and pipe fittings have been exported to more than 20 countries, such as America, Europe, Southeast Asia ... (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, SLIPON FLANGE, THREADED FLANGE.Pressure Class :300, 400 , 600 , 900, 1500 , 2500* ASTM/ANSI B16.48:( ...