... , investment castings, machining parts, pumps and valves castings1.Material: Stainless steel-AISI316 AISI304 ,alloy casting and carbon steel,aluminum2.Technics : Precision Cast sand casting ... parts,marine hardware,construction hardware,valves and pumps parts, etc.The materials involve carbon steel,stainless steel and alloy steel,aluminumCastings conditions: heat treated,machined ...