... could design and supply all kinds of flanges. Dear Sir or Madam Welcome to visit ... Cu-Ni 90/10, 70/30 Forged Steel Flanges: ASME/ANSI B16.5: WELDING NECK FLANGE, SLIP-ON ... , 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 ...