... 1.Mateiral:304,316. 2.Process:investment casting. 3.Certification:ISO9001. 1/2"-6" stainless steel quick couplings ... 1”, 1 1/4”,1 1/2”,2”,2 1/2”,3”,4”,5”, 6”MediumSteams, Gases, Liquids, Viscous or ... PolishAdvantages1) High-quality raw materials imported from Australia 2) Advanced production lines, high technology and experienced ... service! Parameters: Samples: 1/2"-6" stainless steel quick couplings