Features: 1) Austenitic Stainless Steel seamles tubes 2) Grades: 304, 304L,304Cu, 316,316L,409L,410L.and so on Stainless Steel tubes: 1) Type: austenitic. 2) Process method:cold drawn orcold roll with cold filtered. 3) Standard: ASTM, or GB. 4) Diameter: 2mm to 910mm. 5) Wall thinkness: 0.5mm to 45mm. 6) Grade: TP304, 304L, 316 , 316L, 321, or other materials according to customer's chemical ...