Cold Formed Rectangular Hollow Sections (CHS) are widely used in structural applications due to their high strength, excellent weldability, and versatility. These sections are available in a wide range of dimensions, from small sizes like 10 x 15 mm up to large ones such as 800 x 1200 mm, with wall thicknesses ranging from 0.5 mm to 60 mm for the larger sections. Their adaptability makes them ideal for both light and heavy-duty construction projects.
The Cold Formed EN 10219 Black Rectangular Hollow Section is manufactured according to the EN 10219 standard, ensuring quality and reliability. It is commonly used in construction, engineering, and industrial applications where strong yet lightweight structures are required. This type of section is especially useful in building bridges, skyscrapers, and other complex structures. Its hollow design allows for efficient material use, which not only reduces costs but also supports sustainable construction practices.
**Advantages of Cold Formed Rectangular Hollow Sections:**
- **High Strength:** The cold forming process at room temperature helps maintain the material's grain structure, resulting in improved tensile and yield strength compared to hot-formed sections.
- **Excellent Mechanical Properties:** These sections offer smooth surfaces, precise dimensions, and superior mechanical performance, making them ideal for precision engineering tasks.
- **Corrosion Resistance:** With surface treatments such as galvanizing or painting, these sections can withstand harsh environmental conditions, significantly extending the lifespan of the structures they support.
- **Ease of Fabrication:** They are easy to cut, weld, and shape, allowing for flexible and efficient manufacturing processes.
**Complete Dimensions of Cold Formed Rectangular Hollow Sections:**
Below is a comprehensive table showing the outer diameter (O.D.) and wall thickness (W.T.) for various sizes:
| O.D. mm | W.T. mm | O.D. mm | W.T. mm | O.D. mm | W.T. mm | O.D. mm | W.T. mm |
|---------|---------|---------|---------|---------|---------|---------|---------|
| 20x20 | 1.3 | 60x120 | 1.50 | 180x180 | 3 | 300x800 | |
| | 1.4 | | 1.70 | | 3.5–3.75| | 9.5–9.75|
| | 1.5 | | 1.80 | | 4.5–4.75| | 11.5–11.75|
| | 1.7 | | 2.00 | | 5.5–7.75| | 12–13.75|
| | 1.8 | | 2.20 | | 9.5–9.75| | 15–50 |
| | 2.0 | | 2.5–4.0 | | 11.5–11.75| | |
| 20x30 | 1.3 | 60x140 | 4.25–4.75| 100x300 | 2.75 | 300x900 | |
| 25x25 | 1.4 | | 5.0–6.3 | | 3.0–4.0 | | 9.5–9.75|
| 20x40 | 1.5 | 80x120 | 7.5–8 | | 4.5–9.75| | 11.5–11.75|
| 25x40 | 1.7 | | 1.50 | | 11.5–11.75| | 12–13.75|
| 30x30 | 1.8 | | 1.70 | | 12.5–12.75| | 15–50 |
| 30x40 | 2.0 | | 2.00 | | 13.5–13.75| | |
| 40x40 | 2.2 | | 2.20 | 150x300 | 3.75 | 300x1000| |
| 40x50 | 2.5–3.0 | | 2.5–2.75| | 4.5–4.75| | |
| 40x60 | 3.25–4.0| | 3.0–4.75| | 5.5–6.3 | | |
| 50x50 | 4.25–4.75| | 5.5–6.3 | | 7.5–7.75| | |
**Applications of Cold Formed Rectangular Hollow Sections:**
These sections are extensively used in a variety of applications, including frame columns, shear walls, and structural supports in factories and sports halls. They are also used in roof beams, bridge piers, arches, and mechanical components. Their combination of strength, durability, and ease of fabrication makes them an essential part of modern construction and engineering. Whether it’s for residential, commercial, or industrial use, Cold Formed Rectangular Hollow Sections provide a reliable and cost-effective solution.
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