stainless steel quick coupling 1.Size:1/2-6 2.Types: A, ... 3.Samples:free samples 4.Certificate: ISO9000,CE stainless steel quick coupling Specifications:1,Material: 304,316,316L,304L,CF8, ... Casting (Silcon Sol Process)Productive Process: Wax Mould-Shell Making-Dewaxing-Smelting&Casting-Shell Off-Blasting-Cutting&Polishing-Acid Washing ... .501.500.040.0417-209-132-3 stainless steel quick coupling