时间：2015-12-23 08:23
精密钢管尺寸公差
| 尺寸公差(壁厚偏差±5%) |
| 内径尺寸 | H8 | H9 | H10 |
| 30 | +0.0330 | +0.0520 | +0.0840 |
| >30-50 | +0.0390 | +0.0620 | +0.1000 |
| >50-80 | +0.0460 | +0.0740 | +0.1200 |
| >80-120 | +0.0540 | +0.0870 | +0.1400 |
| >120-180 | +0.0630 | +0.1000 | +0.1600 |
| >180-250 | +0.0720 | +0.1150 | +0.1850 |
| >250-315 | +0.0810 | +0.1300 | +0.2100 |
| >315-400 | +0.0890 | +0.1400 | +0.2300 |
按GB/T3639冷拔精密无缝钢管的标准:外径4-30的公差为±0.08
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