以下是45#无缝钢管的部分常用规格表：
| 外径（mm） | 壁厚（mm） | 外径（mm） | 壁厚（mm） |
|---|---|---|---|
| 48 | 5, 5.5, 6, 6.5, 7, 8, 8.5, 9, 10, 11, 12 | 83 | 4, 4.5, 5, 6, 7, 8, 9, 10, 11, 12, 12.5, 13, 14, 15, 16, 18, 20, 22, 25 |
| 50 | 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 7, 8, 9, 10, 11, 12 | 89 | 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 10, 11, 12, 12.5, 13, 14, 15, 16, 18, 20, 22, 25 |
| 51 | 1.8, 3, 3.5, 3.6, 3.8, 4, 4.5, 5, 5.5, 6, 7, 8, 8.5, 9, 10 | 95 | 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 22, 25 |
| 53 | 1.1, 1.2, 1.5, 6, 11, 12, 14 | 102 | 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 22, 25, 28, 30 |
| 54 | 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 8.5, 9, 10, 11, 12 | 108 | 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 11, 12, 12.5, 14, 15, 16, 18, 20, 22, 25, 28, 30 |
| 56 | 4, 4.5, 5, 6, 9 | 114 | 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, 10, 11, 12, 12.5, 13, 14, 15, 16, 18, 20, 22, 25, 28, 30 |
| 57 | 3, 3.5, 4, 5, 5.5, 6, 7, 8, 9, 9.5, 10, 12, 14 | 121 | 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 12.5, 14, 16, 18, 20, 22, 25, 28, 30 |
| 58 | 1.8, 11 | 127 | 4.5, 5, 5.5, 6, 7, 7.5, 8, 9, 10, 11, 12, 12.5, 14, 16, 18, 20, 22, 25, 28, 30 |
| 60 | 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 11, 12, 14 | 133 | 15, 16, 18, 20, 22, 25, 28, 30, 32, 35 |
| 63.5 | 2, 3, 3.5, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 14, 15, 16 | 140 | 4.5, 5, 5.5, 6, 6.5, 7, 8, 10, 11, 12, 12.5, 14, 16, 18, 20, 22, 25, 28, 30, 32, 35 |
| 68 | 6, 6.3, 7, 8, 9, 10, 11, 12, 12.5, 14, 16 | 146 | 30, 35 |
| 70 | 3.5, 4, 4.5, 5, 6, 6.5, 7, 8, 9, 10, 11, 12, 14, 16 | 152 | 5, 6, 7, 8, 10, 11, 12, 12.5, 13, 14, 16, 18, 20, 22, 25, 28, 30, 32, 35, 36, 40 |
| 73 | 3, 3.5, 4, 4.5, 5, 5.5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 18, 20 | 159 | 4.5, 5, 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 30, 32, 35, 38, 40, 45 |
| 76 | 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, 10, 11, 12, 12.5, 14, 15, 16, 18, 20 | 168 | 6, 6.5, 7, 8, 9, 10, 11, 12, 14, 16, 18, 20, 22, 25, 28, 30, 32, 35, 38, 40, 45, 50 |
说明：
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规格多样：45#无缝钢管的规格多样，外径范围从几十毫米到数百毫米不等，壁厚也有多种选择，以适应不同的应用场景和需求。
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定制服务：除了上述常见规格外，许多钢管生产厂家还提供定制服务，可以根据客户的具体要求生产特殊规格的45#无缝钢管。
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用途广泛：45#无缝钢管因其良好的机械性能和加工性能，被广泛应用于石油、化工、机械、电力、汽车、船舶等领域。
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材质特性：45#无缝钢管中的“45”表示
