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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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In this column you can find the steel pipe related articles you need, including industry trends, product standards and materials, and some technical guidelines.
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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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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.
Projects
Many years of large-scale project experience in various fields（Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical etc.）, professional project team is responsible from receiving until the end of the project.
Find the weight per meter of rectangular steel tubes based on size and wall thickness.
Use the chart below for standard sizes, or calculate custom dimensions using the formula and example provided.
All weights are theoretical values for carbon steel (density ≈ 7.85 g/cm³).
Common sizes: 50×25 | 60×30 | 80×40| 100×50 | 120×60| 150×100 | 200×100
| Thickness (mm) | Weight (kg/m) |
|---|---|
| 1.2 | 1.37 |
| 1.5 | 1.70 |
| 2.0 | 2.24 |
| 2.5 | 2.75 |
| Thickness (mm) | Weight (kg/m) |
|---|---|
| 1.5 | 2.18 |
| 2.0 | 2.86 |
| 2.5 | 3.53 |
| 3.0 | 4.17 |
| Thickness (mm) | Weight (kg/m) |
|---|---|
| 2.0 | 4.77 |
| 2.5 | 5.88 |
| 3.0 | 6.96 |
| 4.0 | 9.06 |
| Thickness (mm) | Weight (kg/m) |
|---|---|
| 2.5 | 5.66 |
| 3.0 | 6.78 |
| 4.0 | 8.92 |
| 5.0 | 11.00 |
| Thickness (mm) | Weight (kg/m) |
|---|---|
| 3.0 | 8.20 |
| 4.0 | 10.80 |
| 5.0 | 13.35 |
| 6.0 | 15.85 |
| Thickness (mm) | Weight (kg/m) |
|---|---|
| 4.0 | 15.20 |
| 5.0 | 18.84 |
| 6.0 | 22.42 |
| 8.0 | 29.39 |
| Thickness (mm) | Weight (kg/m) |
|---|---|
| 4.0 | 18.34 |
| 5.0 | 22.77 |
| 6.0 | 27.13 |
| 8.0 | 35.67 |
| Thickness (mm) | Weight (kg/m) |
|---|---|
| 5.0 | 30.60 |
| 6.0 | 36.58 |
| 8.0 | 48.35 |
| Thickness (mm) | Weight (kg/m) |
|---|---|
| 6.0 | 47.10 |
| 8.0 | 62.48 |
| 10.0 | 77.50 |
The theoretical weight per meter can be calculated using the following formula:
W=0.00785⋅2(B+H−2t)t
Where:
W = weight per meter (kg/m)
B = outer width (mm)
H = outer height (mm)
t = wall thickness (mm)
This formula assumes standard carbon steel density.
For example, a rectangular tube with dimensions 100 × 50 × 3 mm has a theoretical weight of approximately 6.78 kg/m.
Rectangular steel tubes are widely used in structural frames, construction supports, and fabrication projects due to their high strength-to-weight ratio and efficient load distribution.
In structural applications, they are commonly used for frames, columns, and load-bearing supports where stability and rigidity are required.
Their predictable weight per meter is critical for load calculations, material estimation, and transportation planning, making accurate weight data essential in engineering and procurement.
For less common rectangular tube sizes, the table below provides theoretical weight per meter based on standard carbon steel density (7.85 g/cm³).
| Size (mm) | Thickness (mm) | Weight (kg/m) |
|---|---|---|
| 50×25 | 1.2 | 1.37 |
| 50×25 | 1.5 | 1.70 |
| 50×30 | 2.5 | 2.94 |
| 50×30 | 3.0 | 3.49 |
| 50×30 | 4.0 | 4.52 |
| 60×30 | 2.5 | 3.34 |
| 60×30 | 3.0 | 3.96 |
| 60×30 | 4.0 | 5.15 |
| 60×40 | 2.5 | 3.73 |
| 60×40 | 3.0 | 4.43 |
| 60×40 | 4.0 | 5.78 |
| 70×50 | 3.0 | 5.37 |
| 70×50 | 4.0 | 7.03 |
| 70×50 | 5.0 | 8.64 |
| 80×40 | 2.5 | 4.51 |
| 80×40 | 3.0 | 5.37 |
| 80×40 | 4.0 | 7.03 |
| 80×40 | 5.0 | 8.64 |
| 80×60 | 3.0 | 6.31 |
| 80×60 | 4.0 | 8.29 |
| 80×60 | 5.0 | 10.21 |
| 90×40 | 3.0 | 5.84 |
| 90×40 | 4.0 | 7.66 |
| 90×40 | 5.0 | 9.42 |
| 90×50 | 3.0 | 6.31 |
| 90×50 | 4.0 | 8.29 |
| 90×50 | 5.0 | 10.21 |
| 90×60 | 3.0 | 6.78 |
| 90×60 | 4.0 | 8.92 |
| 90×60 | 5.0 | 10.99 |
| 100×50 | 3.0 | 6.78 |
| 100×50 | 4.0 | 8.92 |
| 100×50 | 5.0 | 10.99 |
| 120×60 | 3.0 | 8.20 |
| 120×60 | 4.0 | 10.80 |
| 120×60 | 5.0 | 13.35 |
| 120×60 | 6.0 | 15.83 |
| 120×80 | 3.0 | 9.14 |
| 120×80 | 4.0 | 12.06 |
| 120×80 | 5.0 | 14.92 |
| 120×80 | 6.0 | 17.71 |
| 140×80 | 4.0 | 13.31 |
| 140×80 | 5.0 | 16.48 |
| 140×80 | 6.0 | 19.59 |
| 150×100 | 4.0 | 15.2 |
| 150×100 | 5.0 | 18.84 |
| 150×100 | 6.0 | 22.42 |
| 150×100 | 8.0 | 29.39 |
| 160×80 | 4.0 | 14.57 |
| 160×80 | 5.0 | 18.05 |
| 160×80 | 6.0 | 21.48 |
| 160×80 | 8.0 | 28.13 |
| 180×100 | 4.0 | 17.08 |
| 180×100 | 5.0 | 21.20 |
| 180×100 | 6.0 | 25.25 |
| 180×100 | 8.0 | 33.16 |
| 200×100 | 4.0 | 18.34 |
| 200×100 | 5.0 | 22.77 |
| 200×100 | 6.0 | 27.13 |
| 200×100 | 8.0 | 35.67 |
For more details on sizes, specifications, and material selection, you may find the following resources useful:
- Square Tube Weight Chart – weight reference for square hollow sections
- Steel Pipe Weight Chart – general weight data for Carbon pipes
- ERW vs Seamless Pipe – differences in manufacturing and applications
- What is RHS Steel – basic introduction to rectangular hollow sections
E-mail: sales@eastern-steels.com
