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					| 焊接钢管壁厚规格 外径和壁厚允许偏差 |  
						| 双击自动滚屏 | 发布者:www.40crgc.com 发布时间:2025/6/13 阅读:6901次 【字体:大 中 小】 |  | 直缝电焊钢管的外径和壁厚允许偏差(mm)
 
| 外  径 | 高精度D1 | 较高精度D2 | 普通精度D3 |  
| 5~20 | ±0.10 | ±0.20 | ±0.30 |  
| 21~30 | ±0.10 | ±0.25 | ±0.50 |  
| 31~40 | ±0.15 | ±0.30 | ±0.50 |  
| 41~50 | ±0.20 | 士0.35 | ±0.50 |  
| 51~323.9 | ±0.5% | ±0.8% | ±1.0% |  
| >323.9 | ±0.7% | ±0.8% | ±1.0% |  
| 壁厚 | 高精度S1 | 较高精度S2 | 普通精度S3 |  
| 0.06 | +0.03 -0.05 | ±0.06 | ±0.10 |  
| 0.60 | +0.04 -0.07 | ±0.07 |  
| 0.80 | ±0.08 |  
| 1.0 | +0.05 -0.09 | ±0.09 | ±10% |  
| 1.2 | ±0.11 |  
| 1.4 | +0.06 -0.11 | ±0.12 |  
| 1.5 | ±0.13 |  
| 1.6 | +0.07 -0.13 | ±0.14 |  
| 1.8 |  
| 2.0 | ±0.15 |  
| 2.2 | ±0.16 |  
| 2.5 | +0.08 -0.16 | ±0.17 |  
| 2.8 | ±0.18 |  
| 3.0 |  
| 3.2 | +0.10 -0.20 | ±0.20 |  
| 3.5 |  
| 3.8 | ±0.22 |  
| 4.0 |  
| 4.2~5.5 |   | ±8% |  
| >5.5 |   | ±10% | ±15% |  
 
 
 
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