Butt weld fittings are used wherever liquid, gas, chemical and other fluid are created, processed, transported, especially in large size piping system. Such as Oil and gas industries, Midstream, Shipbuilding, Power plants, Food plants, Pharmaceuticals, etc. Specifications of butt weld fittings 180° Return,pipe fitting elbows Material: Carbon Steel ASTM A234 WPB Standard: ASME B16.9 DIN2605