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Standard weight, mill weight and today's amount
Total for 1 length · standard weight
—kg
The result appears hereEnter Nominal size and Wall thickness.
Method
Weight per metre is (outside diameter − wall) × wall × 0.02466, in mm: the exact wall area times the density of steel. A nominal (inch) size does not mean the same outside diameter for both kinds of pipe: a welded pipe (gas, industrial) takes its outside diameter and its medium and heavy wall series from EN 10255 (2½ in = 76.1 mm); a seamless pipe takes its outside diameter and its schedule 40 and schedule 80 walls from ASME B36.10 (2½ in = 73 mm). A wall class is only ever used with the outside diameter of its own standard.
The density of steel is 7.85 g/cm³ (7850 kg/m³) throughout. A number is rounded once, when shown; the table below and the calculator above are the same computation.
The "standard weight" is the nominal weight by table or formula. The "mill weight" is what that mill states for its own length; once you pick a mill, the calculation and the amount use it.
Reference table
Common sizes, by the same computation as the calculator.
| Nominal size (OD) × wall | kg per metre | kg per 6 m length |
|---|---|---|
| Welded pipe 1/2 in (21.3) × 2 | 0.952 | 5.71 |
| Welded pipe 1/2 in (21.3) × 2.5 | 1.159 | 6.95 |
| Welded pipe 1/2 in (21.3) × 3 | 1.354 | 8.12 |
| Welded pipe 3/4 in (26.7) × 2 | 1.218 | 7.31 |
| Welded pipe 3/4 in (26.7) × 2.5 | 1.492 | 8.95 |
| Welded pipe 3/4 in (26.7) × 3 | 1.753 | 10.52 |
| Welded pipe 1 in (33.7) × 2 | 1.563 | 9.38 |
| Welded pipe 1 in (33.7) × 2.5 | 1.923 | 11.54 |
| Welded pipe 1 in (33.7) × 3 | 2.271 | 13.63 |
| Welded pipe 1 1/4 in (42.4) × 2 | 1.993 | 11.96 |
| Welded pipe 1 1/4 in (42.4) × 2.5 | 2.46 | 14.76 |
| Welded pipe 1 1/4 in (42.4) × 3 | 2.915 | 17.49 |
| Welded pipe 1 1/2 in (48.3) × 2 | 2.284 | 13.7 |
| Welded pipe 1 1/2 in (48.3) × 2.5 | 2.824 | 16.94 |
| Welded pipe 1 1/2 in (48.3) × 3 | 3.351 | 20.11 |
| Welded pipe 2 in (60.3) × 2 | 2.875 | 17.25 |
| Welded pipe 2 in (60.3) × 2.5 | 3.563 | 21.38 |
| Welded pipe 2 in (60.3) × 3 | 4.239 | 25.43 |
| Welded pipe 2 1/2 in (76.1) × 2 | 3.655 | 21.93 |
| Welded pipe 2 1/2 in (76.1) × 2.5 | 4.537 | 27.22 |
| Welded pipe 2 1/2 in (76.1) × 3 | 5.408 | 32.45 |
| Welded pipe 3 in (88.9) × 2 | 4.286 | 25.72 |
| Welded pipe 3 in (88.9) × 2.5 | 5.327 | 31.96 |
| Welded pipe 3 in (88.9) × 3 | 6.355 | 38.13 |
| Welded pipe 4 in (114.3) × 2 | 5.539 | 33.23 |
| Welded pipe 4 in (114.3) × 2.5 | 6.892 | 41.35 |
| Welded pipe 4 in (114.3) × 3 | 8.234 | 49.4 |
| Welded pipe 5 in (139.7) × 4 | 13.385 | 80.31 |
| Welded pipe 5 in (139.7) × 5 | 16.609 | 99.65 |
| Welded pipe 5 in (139.7) × 6 | 19.782 | 118.69 |
| Welded pipe 6 in (168.3) × 4 | 16.207 | 97.24 |
| Welded pipe 6 in (168.3) × 5 | 20.135 | 120.81 |
| Welded pipe 6 in (168.3) × 6 | 24.014 | 144.08 |
| Welded pipe 8 in (219.1) × 4 | 21.217 | 127.3 |
| Welded pipe 8 in (219.1) × 5 | 26.399 | 158.39 |
| Welded pipe 8 in (219.1) × 6 | 31.53 | 189.18 |
| Seamless pipe 1/2 in (21.3) × 2.77 | 1.266 | 7.59 |
| Seamless pipe 3/4 in (26.7) × 2.87 | 1.687 | 10.12 |
| Seamless pipe 1 in (33.4) × 3.38 | 2.502 | 15.01 |
| Seamless pipe 1 1/4 in (42.2) × 3.56 | 3.392 | 20.35 |
| Seamless pipe 1 1/2 in (48.3) × 3.68 | 4.049 | 24.3 |
| Seamless pipe 2 in (60.3) × 3.91 | 5.437 | 32.62 |
| Seamless pipe 2 1/2 in (73) × 5.16 | 8.632 | 51.79 |
| Seamless pipe 3 in (88.9) × 5.49 | 11.292 | 67.75 |
| Seamless pipe 4 in (114.3) × 6.02 | 16.075 | 96.45 |
| Seamless pipe 5 in (141.3) × 6.55 | 21.765 | 130.59 |
| Seamless pipe 6 in (168.3) × 7.11 | 28.262 | 169.57 |
| Seamless pipe 8 in (219.1) × 8.18 | 42.547 | 255.28 |
| Seamless pipe 10 in (273) × 9.27 | 60.288 | 361.73 |
| Seamless pipe 12 in (323.8) × 10.31 | 79.703 | 478.22 |
2 in pipe with a 3 mm wall weighs 4.239 kg per metre, and a 6 m length weighs 25.43 kg. Basis: Exact pipe-wall formula.
For 2 in pipe with a 3 mm wall, one tonne is 39.32 lengths of 6 m, that is 40 whole lengths (1,017.37 kg). For any other size use the count-from-weight mode.
The standard weight is the nominal weight by table or formula, the same for every mill. The mill weight is what each mill states for its own length. Pick a mill and its weight and today's price become the basis of the amount.
Pick a mill to see the amount at today's price, then use "Add to cart" or "Proforma". There is no online payment; an Ahantime expert calls to complete the purchase.