... iron,grey iron,stainless steel,carbon steel,aluminum, brass,etc.4.working process:sand casting,investment casting, die casting, forging,stamping,etc. ... Process: Sand casting, investment casting,die casting,forging,etc.7.Casting Process:Client Drawing--Mould Sampling--Casting--Rough Machining--HT--Mechanical testing---Final ... assistant. 2011 pipe fittings of carbon steel casting part/foundry work