RHSSteel
Rectangular hollow sections (RHS) — cold-formed structural tube for framing, posts and fabrication.
Rectangular hollow section (RHS) is cold-formed structural steel tube with a rectangular profile, widely used for framing, posts, trailers, gates and general fabrication. We supply RHS in the full range of sizes from 50×25 to 400×300, in wall thicknesses to suit, manufactured to AS/NZS 1163 in Grade C350L0 and C450L0. Available black (oiled), painted or galvanised with mill test certificates and full traceability.
Product Range
Full Size Range
RHS from 50×25mm up to 400×300mm in wall thicknesses from 1.6mm to 16mm to suit structural and fabrication needs.
Structural Grades
Manufactured to AS/NZS 1163 in Grade C350L0 and C450L0 for verified strength and weldability.
Black, Painted & Galvanised
Supplied black (oiled), in-line painted, or pre-galvanised for corrosion protection.
Cut-to-Length
Cutting to your specified lengths to reduce wastage and on-site handling.
Size Charts & Sections
Dimensions, mass per metre and section properties available to support structural design.
RHS (Rectangular Hollow Section) Sizes
Common Australian RHS sizes to AS/NZS 1163 in Grade C350L0 / C450L0. Available black, painted or pre-galvanised.
| Size D × B (mm) | Wall thickness (mm) |
|---|---|
| 50 × 25 | 1.6 – 3.0 |
| 65 × 35 | 2.0 – 3.0 |
| 75 × 50 | 2.0 – 4.0 |
| 100 × 50 | 2.0 – 6.0 |
| 125 × 75 | 3.0 – 6.0 |
| 150 × 50 | 3.0 – 6.0 |
| 150 × 100 | 4.0 – 9.0 |
| 200 × 100 | 4.0 – 9.0 |
| 250 × 150 | 5.0 – 12.0 |
| 300 × 200 | 6.0 – 12.5 |
| 400 × 300 | 8.0 – 16.0 |
Additional sizes, grades, lengths and finishes available on request — contact us for a full size chart and quote.
Common Applications
- Structural framing and portal frames
- Posts, columns and bollards
- Trailers, gates and machinery
- Mezzanines, platforms and balustrades
- General fabrication and engineering
Relevant Standards
- AS/NZS 1163 — Cold-formed structural steel hollow sections
- AS 4100 — Steel structures
- AS/NZS 1554 — Structural steel welding
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