casting gate valve ISO9001:2000 Approved Process:precision casting&Tooling Standard:JIS,DIN,ASTM,BS OEM service available casting gate valvewe can offer ... service available2.Materials: stainless steel,cast iron,pig iron,carbon steel,alloy steel,non-ferrous,grey iron,ductile cast iron and so on3.Process: lost ... ,polishing,machining,machining center,plating,Heat Treatment,ect. casting gate valve