forged welding neck flange ANSI flanges welding neck flange Product range: DN15-DN3000 competitive ... -standard Standard: ANSI, AMSE, DIN, BS4504, EN1092-1, JIS, FPI ProductForged Welding Neck FlangePipeSize1/2" — 72 " Pressure150# ... , 25barStandardANSI B 16.5, ANSI B16.45, JIS B2220, DIN2633, ASME , ASTM, , JIS , DIN , EN,MaterialQ235, 20#, Q345A105, ST37 ... , sincere service forged welding neck flange