1.Standard:ASTM A554,ASTM A312 2.Outside diameter:20/10mm~150/100mm 3.Wall thickness:0.25mm~4mm 4.Length:6M,or according to customers'requests 5.Material:201,202,304,316,316L,304L,430,409 6.Tolenrance: a:Out diameter:20/10mm-38/25mm-<0.15mm, 50/25mm-75/45mm-<0.20mm, 95/45mm~150/100mm-<0.30mm 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'requirem