ductile iron casting with 100%pressure test, certified by ISO, ... products according to individual client's requirement.1, Lose Wax Process(soluble glass): wax injection, wax welding, dipping, sand- ... : carbon steel, alloy steel, cast iron, cast steel, pig iron, grey iron, ductile cast iron and so on.3, Has obtained international ... 4 CNC machining centers. pressure investment casting, ductile iron