... ,310S,904L and so on. 2.Standards:ASTM,JIS,DIN,GB and so on. Stainless Steel Pipe/Tube 1.Grade:304,304L ... and so on. 2.Standards:ASTM,JIS,DIN,GB and so on.Stainless Steel Pipe/Tube Stainless Steel Pipe/Tube1) Pipe diameter : 6mm-630mm ... pipe thickness : 0.8mm-25mm 2) Grade : 304,304L,316 ...