CAST STEEL GATE VALVES Sizes: DN50-450mm, NPS2"-18" Rating: PN200-320bar, Class1500-2500 Materials: WCB,WC6,WC9 CAST STEEL POWER STATION GATE VALVESSizes: DN50-450mm, NPS2"-18"Rating: PN200-320bar, Class1500-2500Materials: WCB,WC6,WC9,C12AEnds: Weld, Flanged Gate valve