| A312标准尺寸公差表： | |||
| 订货电话：022-26625236 26625326 | |||
| 外径 | 厚度 | 长度 | |
| ＜25.40mm | ±0.13mm | ±10.00% | OD＜101.60mm +3.20mm -0mm |
| ≥25.40mm~50.80mm | ±0.20mm | OD≥101.60mm +4.80 -0mm | |
| ≥50.80mm~76.20mm | ±0.25mm |
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| ≥76.20mm~101.60mm | ±0.38mm |
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| ≥101.60mm~139.70mm | ±0.38mm |
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| ≥139.70mm~203.20mm | ±0.76mm |
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| ≥203.20mm~304.80mm | ±1.27mm |
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