... production 2)high-standard technician team 3)ISO,OEM Carbon Steel Casting-valve parts1 1.Material: The part showed is made up ... of carbon steel. Anyway we can do any metal or alloy parts ... . excellent service Material Grey iron,ductile iron,malleable iron,stainless steel, carbon steel,aluminium,brass etc.standardDIN, ASTM, BS, JIS etc.processsand ...