... DX54D, etc 2.Wall Thickness:2.0-4.5mm 3.OD:10.0-165mm 4.ND:6-150mm Standard AISI, ASTM, BS, DIN ... , DX51D, DX53D, DX54D, etc Wall Thickness 2.0-4.5mm Nominal Diameter (ND) 6.0-150mm(1/8-6 inch) Outer Diameter (OD ... ) 10.0-165mm Weight 0.43-18.69kg/m Length ...