Round steel tubing sizes, dimensions and section properties chart.
Round steel tubes are usually manufactured to meet ASTM A500 grade B (Fy = 42 ksi) or grade C (Fy = 46 ksi). Round steel tubes have an round and uniform wall thickness, except at the weld seam(s). Round steel tubes are designated by "HSS", nominal outside diameter (in.), and wall thickness. HSS 6.000 x 0.500 is nominally 6 in. in diameter with a 1/2 in. nominal wall thickness.
Note: Use dot "." as decimal separator.
Note *:The design wall thickness t, shall be used in calculations involving the wall thickness of hollow structural sections (HSS) per Steel Construction Manual Section B3.12.