GB/T585-1999,flanged cast steel valves,used for war ship and merchant ships,provide ... :1.6, 1.0, 2.5, 4.0, 6.4MPamaterial of stop check valves:bronze,brass,gun metal,cast ... steel,stainless steel,nodular cast ironjiangyin marine valves co.,ltd provides marine valves with different types such as DIN,JIS ... ,GB etc,valves are exported to Singapore,Australia,German,Korea,Japan, ...