... valves castings1.Material: Stainless steel-AISI316 AISI304 ,alloy casting and carbon steel,aluminum2.Technics : Precision Cast sand casting, die casting, ... construction hardware,valves and pumps parts, etc.The materials involve carbon steel,stainless steel and alloy steel,aluminumCastings conditions: heat treated ... you and your company and realize win-win cooperation :) carbon steel lost wax casting