... O.D:6mm-760mm,W.T:1mm-80 · 316L seamless and welded stainless steel tube 1. material:TP304,304L,304H,304LN,TP310,310S, ... -88 EN10216, DIN17458 etc.3. suferce finish:annealed or manual polished or mechanical polished4. O.D:6mm-760mm,W.T:1mm ... .We often cooperate with many outstanding Steel Pipe Plants such as TPCO, Hengyang Steel,Baotou Steel , Anshan Steel etc. standardASTM A312/A312MASTM A249/A249MASTM ...