1,ASTM quick closing valve 2,cast iron 3,shipbuiling 4,as ur request Material:cast iron,bronze,cast steel,ductile iron,stainless steel,SS316,ANSI316 and ... ,BV,RINA,GL and other ship inspection certificateMade by jiangyin marine valves co.ltdAlso we can supply valves according to customer ... or suggestion,make me quote best competitive price to u. cast steel quick closing valve