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| 圓鋼理論重量計算公式：外徑X外徑X0.00617=kg/m | |||
| 45#熱軋圓鋼直徑d(型號） | 理論重量 kg/m | 45#熱軋圓鋼直徑d(型號） | 理論重量 kg/m |
| 5.5 | 0.186 | 13 | 1.04 |
| 6 | 0.222 | 14 | 1.21 |
| 6.5 | 0.26 | 15 | 1.39 |
| 7 | 0.302 | 16 | 1.58 |
| 8 | 0.395 | 17 | 1.78 |
| 9 | 0.499 | 18 | 2 |
| 10 | 0.617 | 19 | 2.23 |
| 11 | 0.746 | 20 | 2.47 |
| 12 | 0.888 | 21 | 2.72 |
| 22 | 2.98 | 63 | 24.5 |
| 23 | 3.26 | 65 | 26 |
| 24 | 3.55 | 68 | 28.5 |
| 25 | 3.85 | 70 | 30.2 |
| 26 | 4.17 | 75 | 34.7 |
| 27 | 4.49 | 80 | 39.5 |
| 28 | 4.83 | 85 | 44.5 |
| 29 | 5.18 | 90 | 49.9 |
| 30 | 5.55 | 95 | 55.6 |
| 31 | 5.92 | 100 | 61.7 |
| 32 | 6.31 | 105 | 68 |
| 33 | 6.71 | 110 | 74.6 |
| 34 | 7.13 | 115 | 81.5 |
| 35 | 7.55 | 120 | 88.8 |
| 36 | 7.99 | 125 | 96.3 |
| 38 | 8.9 | 130 | 104 |
| 40 | 9.86 | 140 | 121 |
| 42 | 10.9 | 150 | 139 |
| 45 | 12.5 | 160 | 158 |
| 48 | 14.2 | 170 | 178 |
| 50 | 15.4 | 180 | 200 |
| 53 | 17.3 | 190 | 223 |
| 55 | 18.6 | 200 | 247 |
| 56 | 19.3 | 220 | 298 |
| 58 | 20.7 | 250 | 385 |
| 60 | 22.2 | ||
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