GB/T585-1999,flanged cast steel valves,used for war ship and merchant ships,provide CCS certificate. cast steel stop valvestype:A and B (for ... 0, 6.4MPamaterial of stop check valves:bronze,brass,gun metal,cast iron,forged steel.cast steel,stainless steel,nodular cast ironjiangyin marine valves co.,ltd ... willing to provide warm,quick and considerate service for u. flanged cast steel globe check valves