... and green sand2.Material:Grey iron,Ductile iron,Malleable Iron,Stainless steel,Carbon Steel,Aluminum, Brass ,Bronze or on request ... .Process: silica sol and water glass process 2.Material:stainless steel,carbon steel,alloy steel,white steel,copper,brass or ... so onMachining equipment:We own the CNC machine tools,Vertical machining centers,Turning center lathes etc High pressure welding parts gas system