1/2"-6" stainless steel quick couplings 1.Mateiral:304,316. 2.Process:investment casting. 3.Certification:ISO9001. 1/2"-6" stainless steel quick couplings.Description: Welcome international ... /2”,3/4”, 1”, 1 1/4”,1 1/2”,2”,2 1/2”,3”,4”,5”, 6”MediumSteams, Gases, Liquids, Viscous or corrosive mediumMATERIALASTM A351,CF8,CF8M,CF3,CF3M,,304,316 1.4301,1 .4306,1.4401,1.4404,1 ...