无缝钢管的理论重量表如下：
| 外径（mm） | 壁厚（mm） | 理论重量（kg/m） |
| --- | --- | --- |
| 2.5 | 3 | 32 |
| 3 | 3.5 | 1.82 |
| 3.5 | 4 | 2.15 |
| 4 | 4.5 | 2.46 |
| 4.5 | 5 | 2.76 |
| 5 | 5.5 | 3.05 |
| 5.5 | 6 | 3.33 |
| 6 | 6.5 | 3.59 |
| 6.5 | 7 | 3.85 |
| 7 | 8 | 4.07 |
| 8 | 9 | 4.41 |
| 9 | 10 | 4.74 |
| 10 | 11 | 5.07 |
| 11 | 12 | 5.4 |
| 12 | 13 | 5.74 |
| 13 | 14 | 6.08 |
| 14 | 15 | 6.42 |
| 15 | 16 | 6.76 |
| 16 | 17 | 7.1 |
| 17 | 18 | 7.44 |
| 18 | 19 | 7.78 |
| 19 | 20 | 8.12 |
| 20 | 21 | 8.46 |
| 21 | 22 | 8.8 |
| 22 | 23 | 9.14 |
| 23 | 24 | 9.48 |
| 24 | 25 | 9.82 |
| 25 | 26 | 10.16 |
| 26 | 27 | 10.5 |
| 27 | 28 | 10.84 |
| 28 | 29 | 11.18 |
| 29 | 30 | 11.52 |
| 30 | 31 | 11.86 |
| 31 | 32 | 12.2 |
| 32 | 33 | 12.54 |
| 33 | 34 | 12.88 |
| 34 | 35 | 13.22 |
| 35 | 36 | 13.56 |
| 36 | 37 | 13.9 |
| 37 | 38 | 14.24 |
| 38 | 39 | 14.58 |
| 39 | 40 | 14.92 |
| 40 | 41 | 15.26 |
| 41 | 42 | 15.6 |
| 42 | 43 | 15.94 |
| 43 | 44 | 16.28 |
| 44 | 45 | 16.62 |
| 45 | 46 | 16.96 |
| 46 | 47 | 17.3 |
| 47 | 48 | 17.64 |
| 48 | 49 | 17.98 |
| 49 | 50 | 18.32 |
| 50 | 51 | 18.66 |
| 51 | 52 | 19.0 |
| 52 | 53 | 19.34 |
| 53 | 54 | 19.68 |
| 54 | 55 | 20.02 |
| 55 | 56 | 20.36 |
| 56 | 57 | 20.7 |
| 57 | 58 | 21.04 |
| 58 | 59 |