ASTM A268 / A268M - 10 Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service.
STAINLESS STEEL TUBES ASTM A268
Thickness(MM)1 1.2 1.5 2 Outside Diameter (inch) (mm) 5/8' 15.9 3/4' 19.1 1' 25.4 1 1/4' 31.8 1 1/2' 38.1 1 3/4' 44.5 2' 50.8 2 1/8' 54 2 1/4' 57 2 3/8' 60.3 2 1/2' 63.5 3' 76.5 3 1/2' 88.9 4' 101.6 4 1/4' 108