stainless steel quick coupling 1.Size:1/2-6 2.Types: A,B,C, ... 3.Samples:free samples 4.Certificate: ISO9000,CE stainless steel quick coupling Specifications:1,Material: 304,316,316L,304L,CF8,CF8M stainless ... , and some corrosive liquids. Casting method is investment casting.5,Standard:DRN2828,MIL-C274876,Size:1/2”-6”7,Types: A ... .031.501.500.040.0417-209-132-3 stainless steel quick coupling