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Eastern Steel Manufacturing Co.,Ltd is a leading manufacturer and distributor of seamless steel pipe, welded steel pipe, OCTG products and fittings. We supply first-step processing, semi-finished parts and finished parts to help our clients meet fabrication requirements beyond their capacity or to improve operations by moving forward the pre-production processing.
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Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
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Find standard RHS steel sizes, wall thickness, and weight per meter for rectangular hollow sections.
We supply a wide range of rhs sizes steel for structural and fabrication applications.
- Size range: 40 × 20 mm to 400 × 200 mm
- Thickness: 1.5 mm to 16 mm
- Standards: ASTM A500, EN 10219
View the full RHS steel size chart below or request custom sizes.
All weights are theoretical values based on carbon steel density (7.85 g/cm³).
Used for light fabrication, frames, gates, and non-load-critical structures.
| Size (mm) | Weight (kg/m) | Size (mm) | Weight (kg/m) |
|---|---|---|---|
| 40×20×2.0 | 1.68 | 40×20×2.5 | 2.03 |
| 40×20×3.0 | 2.36 | 40×25×1.5 | 1.44 |
| 40×25×2.0 | 1.89 | 40×25×2.5 | 2.23 |
| 50×25×2.0 | 2.21 | 50×25×2.5 | 2.72 |
| 50×25×3.0 | 3.22 | 50×30×2.5 | 2.92 |
| 50×30×3.0 | 3.45 | 50×30×4.0 | 4.46 |
| 50×40×3.0 | 3.77 | 60×40×2.0 | 2.93 |
| 60×40×2.5 | 3.71 | 60×40×3.0 | 4.39 |
| 60×40×4.0 | 5.72 | 70×50×2.0 | 3.56 |
| 70×50×2.5 | 4.39 | 70×50×3.0 | 5.19 |
| 70×50×4.0 | 6.71 | 80×40×2.5 | 4.26 |
| 80×40×3.0 | 5.34 | 80×40×4.0 | 6.97 |
| 80×40×5.0 | 8.54 | 80×50×3.0 | 5.66 |
| 80×50×4.0 | 7.34 | 90×50×3.0 | 6.28 |
Common in structural supports, frames, and general building applications.
| Size (mm) | Weight (kg/m) | Size (mm) | Weight (kg/m) |
|---|---|---|---|
| 90×50×3.6 | 7.46 | 90×50×5.0 | 10.11 |
| 100×50×2.5 | 5.63 | 100×50×3.0 | 6.75 |
| 100×50×4.0 | 8.86 | 100×50×5.0 | 10.90 |
| 100×60×3.0 | 7.22 | 100×60×3.6 | 8.59 |
| 100×60×5.0 | 11.70 | 120×80×2.5 | 7.65 |
| 120×80×3.0 | 9.03 | 120×80×4.0 | 12.00 |
| 120×80×5.0 | 14.80 | 120×80×6.0 | 17.60 |
| 120×80×8.0 | 22.90 | 150×100×5.0 | 18.70 |
| 150×100×6.0 | 22.30 | 150×100×8.0 | 29.10 |
| 150×100×10.0 | 35.70 | 160×80×5.0 | 18.00 |
Designed for heavy loads, columns, and large-span structural systems.
| Size (mm) | Weight (kg/m) | Size (mm) | Weight (kg/m) |
|---|---|---|---|
| 160×80×6.0 | 21.30 | 160×80×8.0 | 27.90 |
| 200×100×5.0 | 22.70 | 200×100×6.0 | 27.00 |
| 200×100×8.0 | 35.40 | 200×100×10.0 | 43.60 |
| 250×150×5.0 | 30.50 | 250×150×6.0 | 38.20 |
| 250×150×8.0 | 48.00 | 250×150×10.0 | 59.30 |
| 300×200×6.0 | 48.10 | 300×200×8.0 | 60.50 |
| 300×200×10.0 | 75.00 | 400×200×8.0 | 73.10 |
| 400×200×10.0 | 90.70 | 400×200×16.0 | 142.00 |
Weight Reference All weights shown are theoretical values based on carbon steel density (7.85 g/cm³).
For detailed weight calculations and extended size data, see: Rectangular Tube Weight Chart (kg/m) + Formula
Selecting the right RHS steel size is not only about dimensions, but how the section performs under actual loading conditions.
In structural applications, rectangular sections are typically used where bending occurs in one primary direction. The section height (H) has a direct impact on bending resistance, while wall thickness (t) affects both strength and local stability.
- Small sections (40–80 mm range)
Suitable for light fabrication, frames, and non-structural components where loads are limited and ease of fabrication is a priority.
- Medium sections (90–150 mm range)
Common in building frames, supports, and general structural applications. This range provides a practical balance between load capacity, weight, and cost.
- Large sections (160 mm and above)
Used in columns, primary structural members, and heavy-load applications where higher bending stiffness and load-bearing capacity are required.
RHS size selection is usually finalized during design, but adjustments are often made during procurement based on availability, fabrication, and cost.
Using a consistent size and weight reference helps reduce unnecessary changes and keeps projects moving without delays.
For most applications, the standard sizes above will cover the requirement. If not, it’s common to fine-tune dimensions or thickness based on the actual use case.
E-mail: sales@eastern-steels.com
