CHS – Circular hollow section(s) are used as columns and braces in portal frame structures.
An example is a 114.3 x 5 CHS, which has a diameter of 114.3 mm and the wall is 5 mm thick.
Similarly to RHS and SHS sections, hot-rolled CHSs are made on the mill as one piece, whereas cold-formed CHSs are made of a flat sheet rolled at a radius and welded. It is therefore easy to note the difference, as the cold-rolled CHSs have a weld all along their length.
Watch our easy-to-understand video explaining what a CHS (Circular Hollow Section) is!
| Type | Weight [kg/m] |
Diameter [mm] |
Wall thickness [mm] |
|---|---|---|---|
| 21.3 x 3.2 CHS | 1.4 | 21.3 | 3.2 |
| 26.9 x 3.2 CHS | 1.9 | 26.9 | 3.2 |
| 33.7 x 2.6 CHS | 2.0 | 33.7 | 2.6 |
| 33.7 x 3.2 CHS | 2.4 | 33.7 | 3.2 |
| 33.7 x 4 CHS | 2.9 | 33.7 | 4 |
| 42.4 x 2.6 CHS | 2.6 | 42.4 | 2.6 |
| 42.4 x 3.2 CHS | 3.1 | 42.4 | 3.2 |
| 42.4 x 4 CHS | 3.8 | 42.4 | 4 |
| 48.3 x 3.2 CHS | 3.6 | 48.3 | 3.2 |
| 48.3 x 4 CHS | 4.4 | 48.3 | 4 |
| 48.3 x 5 CHS | 5.3 | 48.3 | 5 |
| 60.3 x 3.2 CHS | 4.5 | 60.3 | 3.2 |
| 60.3 x 4 CHS | 5.6 | 60.3 | 4 |
| 60.3 x 5 CHS | 6.8 | 60.3 | 5 |
| 76.1 x 3.2 CHS | 5.8 | 76.1 | 3.2 |
| 76.1 x 4 CHS | 7.1 | 76.1 | 4 |
| 76.1 x 5 CHS | 8.8 | 76.1 | 5 |
| 88.9 x 3.2 CHS | 6.8 | 88.9 | 3.2 |
| 88.9 x 4 CHS | 8.4 | 88.9 | 4 |
| 88.9 x 5 CHS | 10.3 | 88.9 | 5 |
| 114.3 x 3.6 CHS | 9.8 | 114.3 | 3.6 |
| 114.3 x 5 CHS | 13.5 | 114.3 | 5 |
| 114.3 x 6.3 CHS | 16.8 | 114.3 | 6.3 |
| 139.7 x 5 CHS | 16.6 | 139.7 | 5 |
| 139.7 x 6.3 CHS | 20.7 | 139.7 | 6.3 |
| 139.7 x 8 CHS | 26.0 | 139.7 | 8 |
| 139.7 x 10 CHS | 32.0 | 139.7 | 10 |
| 168.3 x 5 CHS | 20.1 | 168.3 | 5 |
| 168.3 x 6.3 CHS | 25.2 | 168.3 | 6.3 |
| 168.3 x 8 CHS | 31.6 | 168.3 | 8 |
| 168.3 x 10 CHS | 39.0 | 168.3 | 10 |
| 193.7 x 5 CHS | 23.3 | 193.7 | 5 |
| 193.7 x 5.4 CHS | 25.1 | 193.7 | 5.4 |
| 193.7 x 6.3 CHS | 29.1 | 193.7 | 6.3 |
| 193.7 x 8 CHS | 36.6 | 193.7 | 8 |
| 193.7 x 10 CHS | 45.3 | 193.7 | 10 |
| 193.7 x 12.5 CHS | 55.9 | 193.7 | 12.5 |
| 193.7 x 16 CHS | 70.1 | 193.7 | 16 |
| 219.1 x 5 CHS | 26.4 | 219.1 | 5 |
| 219.1 x 6.3 CHS | 33.1 | 219.1 | 6.3 |
| 219.1 x 8 CHS | 41.6 | 219.1 | 8 |
| 219.1 x 10 CHS | 51.6 | 219.1 | 10 |
| 219.1 x 12.5 CHS | 63.7 | 219.1 | 12.5 |
| 219.1 x 16 CHS | 80.1 | 219.1 | 16 |
| 219.1 x 20 CHS | 98.2 | 219.1 | 20 |
| 244.5 x 6.3 CHS | 37.0 | 244.5 | 6.3 |
| 244.5 x 8 CHS | 46.7 | 244.5 | 8 |
| 244.5 x 10 CHS | 57.8 | 244.5 | 10 |
| 244.5 x 12.5 CHS | 71.5 | 244.5 | 12.5 |
| 244.5 x 16 CHS | 90.2 | 244.5 | 16 |
| 244.5 x 20 CHS | 111.0 | 244.5 | 20 |
| 273 x 6.3 CHS | 41.4 | 273 | 6.3 |
| 273 x 8 CHS | 52.3 | 273 | 8 |
| 273 x 10 CHS | 64.9 | 273 | 10 |
| 273 x 12.5 CHS | 80.3 | 273 | 12.5 |
| 273 x 16 CHS | 101.0 | 273 | 16 |
| 273 x 20 CHS | 125.0 | 273 | 20 |
| 273 x 25 CHS | 153.0 | 273 | 25 |
| 323.9 x 6.3 CHS | 49.3 | 323.9 | 6.3 |
| 323.9 x 8 CHS | 62.3 | 323.9 | 8 |
| 323.9 x 10 CHS | 77.4 | 323.9 | 10 |
| 323.9 x 12.5 CHS | 96.0 | 323.9 | 12.5 |
| 323.9 x 16 CHS | 121.0 | 323.9 | 16 |
| 323.9 x 20 CHS | 150.0 | 323.9 | 20 |
| 323..9 x 25 CHS | 184.0 | 323.9 | 25 |
| 355.6 x 8 CHS | 68.6 | 355.6 | 8 |
| 355.6 x 10 CHS | 85.2 | 355.6 | 10 |
| 355.6 x 12.5 CHS | 106.0 | 355.6 | 12.5 |
| 355.6 x 16 CHS | 134.0 | 355.6 | 16 |
| 355.6 x 20 CHS | 166.0 | 355.6 | 20 |
| 355.6 x 25 CHS | 204.0 | 355.6 | 25 |
| 406.4 x 10 CHS | 97.8 | 406.4 | 10 |
| 406.4 x 12.5 CHS | 121.0 | 406.4 | 12.5 |
| 406.4 x 16 CHS | 154.0 | 406.4 | 16 |
| 406 x 20 CHS | 191.0 | 406.4 | 20 |
| 406.4 x 25 CHS | 235.0 | 406.4 | 25 |
| 406.4 x 32 CHS | 295.0 | 406.4 | 32 |
| 457 x 10 CHS | 110.0 | 457 | 10 |
| 457 x 12.5 CHS | 137.0 | 457 | 12.5 |
| 457 x 16 CHS | 174.0 | 457 | 16 |
| 457 x 20 CHS | 216.0 | 457 | 20 |
| 457 x 25 CHS | 266.0 | 457 | 25 |
| 457 x 32 CHS | 335.0 | 457 | 32 |
| 457 x 40 CHS | 411.0 | 457 | 40 |
