... date2.OEM service available 3.Materials: stainless steel,cast iron,pig iron,carbon steel,alloy steel,non-ferrous,grey iron,ductile cast iron ... soluble glass process , silicon process casting 5.Application: Industrial parts, Machinery parts, hardware, construction parts, valve/valve parts,train,craft,doorhandle ... business relation with you for long term, thank you. stainless steel welding part