cast steel gate valve ISO9001:2000 Approved Process:precision casting Standard:JIS,DIN,ASTM,BS OEM service available cast steel gate valveWe are a foundry which is near ... ,plating,HeatTreatment,ect. description materialstainless steel, cast iron, pig iron, carbon steel, alloy steel, non-ferrous, grey iron, ductile cast, aluminum alloy, ductile iron, brass ...