MS Square (SHS) and Rectangular (RHS) Hollow Section pipe weight is calculated from the tube’s cross-sectional steel area at 7,850 kg/m³ density. Figures below use the standard simplified industry formula (ignoring the small corner-radius deduction, as is standard trade practice).
Weight Calculation Formula
Formula: W (kg/m) = 2 × t × (A + B − 2t) × 7,850 ÷ 1,000,000
Where: A, B = outer side dimensions (mm) — A=B for square sections, t = wall thickness (mm)
MS Square Pipe (SHS) Weight Chart
| Size (mm) | 2.0mm wall | 2.5mm wall | 3.0mm wall | 4.0mm wall | 5.0mm wall |
|---|---|---|---|---|---|
| 20 × 20 | 1.13 kg/m | 1.37 kg/m | 1.6 kg/m | 2.01 kg/m | 2.35 kg/m |
| 25 × 25 | 1.44 kg/m | 1.77 kg/m | 2.07 kg/m | 2.64 kg/m | 3.14 kg/m |
| 32 × 32 | 1.88 kg/m | 2.32 kg/m | 2.73 kg/m | 3.52 kg/m | 4.24 kg/m |
| 40 × 40 | 2.39 kg/m | 2.94 kg/m | 3.49 kg/m | 4.52 kg/m | 5.5 kg/m |
| 50 × 50 | 3.01 kg/m | 3.73 kg/m | 4.43 kg/m | 5.78 kg/m | 7.07 kg/m |
| 65 × 65 | 3.96 kg/m | 4.91 kg/m | 5.84 kg/m | 7.66 kg/m | 9.42 kg/m |
| 75 × 75 | 4.58 kg/m | 5.69 kg/m | 6.78 kg/m | 8.92 kg/m | 10.99 kg/m |
| 100 × 100 | 6.15 kg/m | 7.65 kg/m | 9.14 kg/m | 12.06 kg/m | 14.91 kg/m |
| 120 × 120 | 7.41 kg/m | 9.22 kg/m | 11.02 kg/m | 14.57 kg/m | 18.05 kg/m |
| 150 × 150 | 9.29 kg/m | 11.58 kg/m | 13.85 kg/m | 18.34 kg/m | 22.77 kg/m |
MS Rectangular Pipe (RHS) Weight Chart
| Size A×B (mm) | 2.0mm wall | 2.5mm wall | 3.0mm wall | 4.0mm wall | 5.0mm wall |
|---|---|---|---|---|---|
| 40×20 | 1.76 kg/m | 2.16 kg/m | 2.54 kg/m | 3.27 kg/m | 3.92 kg/m |
| 50×25 | 2.23 kg/m | 2.75 kg/m | 3.25 kg/m | 4.21 kg/m | 5.1 kg/m |
| 50×30 | 2.39 kg/m | 2.94 kg/m | 3.49 kg/m | 4.52 kg/m | 5.5 kg/m |
| 60×40 | 3.01 kg/m | 3.73 kg/m | 4.43 kg/m | 5.78 kg/m | 7.07 kg/m |
| 80×40 | 3.64 kg/m | 4.51 kg/m | 5.37 kg/m | 7.03 kg/m | 8.63 kg/m |
| 100×50 | 4.58 kg/m | 5.69 kg/m | 6.78 kg/m | 8.92 kg/m | 10.99 kg/m |
| 120×60 | 5.53 kg/m | 6.87 kg/m | 8.2 kg/m | 10.8 kg/m | 13.35 kg/m |
| 150×100 | 7.72 kg/m | 9.62 kg/m | 11.49 kg/m | 15.2 kg/m | 18.84 kg/m |
Figures are theoretical nominal weights per the standard formula; actual mill weights may vary within rolling tolerance (typically ±6-8% per IS 4923). Seamless Steel Industries stocks and sources MS square/rectangular hollow sections in all standard and custom sizes — request a quotation with your exact size, wall thickness, and length.