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Enter outside diameter OD, wall thickness t and length to get kg/m, kg/length and outer paint area.
kg/m = 0.02466 × (OD − t) × t
Enter dimensions in mm.
Theoretical weight from nominal dimensions, excluding rolling tolerance and cutting loss.
| Quantity | Formulas | Unit |
|---|---|---|
| Weight per metre | 0.02466 × (OD − t) × t | kg/m |
| Outer paint area | π × OD / 1000 | m²/m |
Dimensions per ASME B36.10M, weight from the formula above with 7850 kg/m³.
| Pipe size | OD (mm) | SCH40 t (mm) | SCH40 kg/m | SCH80 t (mm) | SCH80 kg/m |
|---|---|---|---|---|---|
| DN15 (1/2") | 21.3 | 2.77 | 1.27 | 3.73 | 1.62 |
| DN20 (3/4") | 26.7 | 2.87 | 1.69 | 3.91 | 2.2 |
| DN25 (1") | 33.4 | 3.38 | 2.5 | 4.55 | 3.24 |
| DN32 (1¼") | 42.2 | 3.56 | 3.39 | 4.85 | 4.47 |
| DN40 (1½") | 48.3 | 3.68 | 4.05 | 5.08 | 5.41 |
| DN50 (2") | 60.3 | 3.91 | 5.44 | 5.54 | 7.48 |
| DN65 (2½") | 73 | 5.16 | 8.63 | 7.01 | 11.41 |
| DN80 (3") | 88.9 | 5.49 | 11.29 | 7.62 | 15.27 |
| DN100 (4") | 114.3 | 6.02 | 16.08 | 8.56 | 22.32 |
| DN125 (5") | 141.3 | 6.55 | 21.77 | 9.53 | 30.97 |
| DN150 (6") | 168.3 | 7.11 | 28.26 | 10.97 | 42.56 |
| DN200 (8") | 219.1 | 8.18 | 42.55 | 12.7 | 64.64 |
| DN250 (10") | 273 | 9.27 | 60.29 | 12.7 | 81.53 |
| DN300 (12") | 323.8 | 9.53 | 73.86 | 12.7 | 97.44 |
OD 114.3 × 6.02 mm: 0.02466 × (114.3 − 6.02) × 6.02 ≈ 16.08 kg/m.
OD 60.3 × 3.91 mm ≈ 5.44 kg/m. A 6 m length weighs about 32.6 kg.
OD 168.3 × 7.11 mm ≈ 28.26 kg/m → 6 m length ≈ 169.6 kg.
DN (or NPS in inches) is the nominal size used to name a pipe, not a measured dimension. Weight must be calculated with the actual outside diameter OD, e.g. DN100 has OD 114.3 mm.