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焊前管子的弯曲半径、圆度允差及允许的波纹深度 mm |
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允差名称 |
管 子 外 径 |
示意图 |
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30 |
38 |
50 |
60 |
70 |
83 |
102 |
108 |
127 |
150 |
200 |
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弯曲半径R的允差 |
R＝75～125 |
±2 |
±2 |
±3 |
±3 |
±4 |
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R＝160～300 |
±1 |
±1 |
±2 |
±2 |
±3 |
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R＝400 |
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±5 |
±5 |
±5 |
±5 |
±5 |
±5 |
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R＝500～1000 |
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±4 |
±4 |
±4 |
±4 |
±4 |
±4 |
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R＞1000 |
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±3 |
±3 |
±3 |
±3 |
±3 |
±3 |
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在弯曲半径处的圆度允差a或b |
R＝75 |
3.0 |
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R＝100 |
2.5 |
3.1 |
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R＝125 |
2.3 |
2.6 |
3.6 |
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R＝160 |
1.7 |
2.1 |
3.2 |
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R＝200 |
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1.7 |
2.8 |
3.6 |
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R＝300 |
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1.6 |
2.6 |
3.0 |
4.6 |
5.8 |
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R＝400 |
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2.4 |
3.8 |
5.0 |
7.2 |
8.1 |
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R＝500 |
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1.8 |
3.1 |
4.2 |
6.2 |
7.0 |
7.6 |
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R＝600 |
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1.5 |
2.3 |
3.4 |
5.1 |
5.9 |
6.5 |
7.5 |
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R＝700 |
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1.2 |
1.9 |
2.5 |
3.6 |
4.4 |
5.0 |
6.0 |
7.0 |
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弯曲处的波纹深度 a |
— |
1.0 |
1.5 |
1.5 |
2.0 |
3.0 |
4.0 |
5.0 |
6.0 |
7.0 |
8.0 |
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