1.Standard:ASTM A554,ASTM A312 2.Outside diameter:15.9mm~101.6mm 3.Wall thickness:0.25mm~4mm 4.Length:6M,or according to customers'requests 5.Material:201,202,304,304L,316,304L,430,409 6.Tolenrance: a:Out diameter:15.9mm-38.1mm-?.2mm, 38.1mm-76.2mm-?.3mm, 89.0mm~101.6mm-?.4mm b:Thickness: 0.25mm~1.0mm-?.02mm,1.0mm~4.0mm-?.03mm 7.Polishing:400#,320#,180#,150#,240#,80#and hair line 8.Packing:Each in a plastic bag or as customers'requirement