1.Stainless union 2.Material: AISI304,316L 3.Standard:DIN,SMS,IDF,RJT, ... ,1"-4" 5. finish: Ra<0.8um Product name :Stainless union Material : AISI304, AISI304L, AISI316LStandards:DIN,SMS,IDF,RJT,ISO,DSConnection ... , unions, ferrules, etc.DONJOY warmly welcome your detail inquiry. Stainless union