... .Process:investment casting. 3.Certification:ISO9001. 1/2"-6" stainless steel quick couplings.Description: Welcome international order ,please attach ... /2”,2”,2 1/2”,3”,4”,5”, 6”MediumSteams, Gases, Liquids, Viscous or corrosive mediumMATERIALASTM ... 4401,1.4404,1.0619 Body material/ballStainless steel 316/304TypeA,B,C,D,E,F,DC, ... stop service! Parameters: Samples: 1/2"-6" stainless steel quick couplings