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 ... ,polishing,machining,machining center,plating,HeatTreatment,ect. descriptionmaterialstainless steel, cast iron, pig iron, carbon steel, alloy steel, non-ferrous, grey iron, ductile cast, aluminum ...