... : DN15-DN3000 competitive price and fine service forged welding neck flangeANSI flanges welding neck flangeProduct range: DN15-DN3000 Material: Carbon steel, alloy ... : ANSI, AMSE, DIN, BS4504, EN1092-1, JIS, FPI ProductForged Welding Neck FlangePipeSize1/2" — 72 " Pressure150# , 300#, 600#, 900#, 1500#, 2500#, PN16 ...