Seamess Stainless Steel Tube 1.Grade:201,202,301,304,304L,310S,316L,321,etc 2.Diameter:6 - 630mm ... :0.5 - 30mm Seamess Stainless Steel Tube1.Grade:201,202,301,304,304L,310S,316L,321,347H,etc 2.Diameter:6 ... finish: Annealed / cold pilgered / manual polished / mechanical polished04Materials: 201,202,301,304,304L,310S,316L,321,347H,etc05Standards: ISO,DIN,3A ...