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 ... .4306,1.4401,1.4404,1.0619 Body material/ballStainless steel 316/304TypeA,B,C,D,E,F,DC,DPCasting ProcessInvestment ... exceed your expectation with one stop service! Parameters: Samples: 1/2"-6" stainless steel quick couplings