... A-197, ISO5922, EN1562. 1. Product Item: Pipe Fittings, Malleable Iron Pipe Fittings (elbows, tees, sockets, bends, nipples, unions, crosses, flanges, ... standard, American standard & DIN 3. Pipe Fittings Material: According with GB/T9440 malleable iron, ASTM A-197, ISO5922, EN1562. 4 ... . Pipe Fittings Specification: Size is from 1 ...