... steel quick coupling pipes hose B 1.Size:1/2-6 2.Types: A,B,C,D,E,F,DC, ... samples 4.Certificate:CE stainless steel quick coupling pipes hose B 1,Material: 304,316,316L,304L,CF8,CF8M ... ,MIL-C274876,Size:1/2”-6”7,Types: A,B,C,D,E,F,DC,DP8,Thickness:SCH20, SGP ... NBR),Viton and Telfon12,Test pressure: 3/4"-2" 250PSI(17.6bar) 3"-4" 200PSI(14.8bar) 2 1/2 ... 132-3 stainless steel quick coupling pipes hose B