... 304,316. 2.Process:investment casting. 3.Certification:ISO9001. 2-1/2inch ss quick couplings F .Description: Welcome international order ,please ... us your detail requirements. Size1/2”,3/4”, 1”, 1 1/4”,1 1/2”,2”,2 1/2”,3”,4”,5”, 6”MediumSteams, Gases, ... ,1 .4306,1.4401,1.4404,1.0619 Body material/ballStainless steel 316/304TypeA,B,C,D,E,F,DC,DPCasting ProcessInvestment-CastingSurface TreatmentStain & ...