PRODUCT FAMILY 03 · SHS / RHS
Square and rectangular tube where a flat face has to carry something.
SHS and RHS 20×20 to 50×50, wall 1.2–4.0 mm. Columns, truss chords, door frames, equipment rails — the members where a clamp would rotate, a bolt needs a flat face, or two planes have to be stiff at once.
A square section is not a round section with corners. It has similar stiffness in both axes, which suits columns and chords; it presents a flat face for fixings; and it is easier to weld without distorting. It is also less efficient per kilo than an oval when resisting one-directional bending, which is why arches stay oval.
| Size | 1.5 mm | 2.0 mm | 2.5 mm | 3.0 mm |
|---|---|---|---|---|
| 20 × 20 | 0.87 | 1.13 | — | — |
| 25 × 25 | 1.11 | 1.44 | 1.77 | — |
| 30 × 30 | 1.34 | 1.76 | 2.16 | 2.54 |
| 40 × 40 | — | 2.39 | 2.94 | 3.49 |
| 50 × 50 | — | 3.01 | 3.73 | 4.43 |
kg/m calculated as 4 × (side − wall) × wall × 0.00785, before corner-radius correction. Nominal only.
RHS is quoted the same way with both dimensions: for example 40×60×2.0 or 50×100×3.0. It is the section for door lintels, gutter supports and truss chords where depth matters more than width.
- Sizes (SHS)
- 20×20 / 25×25 / 30×30 / 40×40 / 50×50 mm
- Sizes (RHS)
- 20×40 / 30×60 / 40×60 / 50×100 mm
- Wall
- 1.2 / 1.5 / 2.0 / 2.5 / 3.0 / 4.0 mm
- Length
- 6 m / 12 m / cut to order
- Grade
- Q235B · Q355B
- Coating
- Z275 pre-galvanised · hot-dip
- Fabrication
- cut, punched, welded, mitred
- Packing
- square bundles, tagged
- Corner radius
- per EN 10219
- Cut tolerance
- ±1 mm
- Drilling
- CNC to pattern
- Loading
- 40HQ
Size pages
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