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| Cold-drawn Shaped Tubes |
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Tolerance Of Size And Angle Tolerance Of Size And Angle |
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JISG3466 (Japan ) |
GB6728 (China ) |
GB3094 (China ) |
| A,Bmm |
|
Under50 |
±0.5 |
250 |
±2.0 |
Under30 |
±0.3 (ordinary) |
±0.2 (advanced) |
| Under100 |
±1.5 |
100 |
±0.8 |
300 |
±2.4 |
30-50 |
±0.4 (ordinary) |
±0.3 (advanced) |
| Above100 |
±1.5% |
150 |
±1.2 |
350 |
±2.8 |
50-75 |
±0.8% (ordinary) |
±0.7% (advanced) |
| 200 |
±1.6 |
400 |
±3.2 |
Above75 |
±1% (ordinary) |
±0.8% (advanced) |
| Level degree mm |
Under100 |
Under ±0.5% |
Under60 |
±0.4 |
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50-75 |
±0.8% (ordinary) |
±0.5% (advanced) |
| Above100 |
A,B ±0.5% |
Above60 |
0.60% |
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Above75 |
±0.9% (ordinary) |
±0.6% (advanced) |
| Contained angle of adjoint level |
±1.5° |
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| Bending degree |
Total length is Under 0.3% |
Each meter is not greater than 2,the total length is not greater than 0.2% |
Per meter<=4.0mm, total length<=0.4% |
| Angle department |
Rs under 3t |
carbon streel Rs under 3.5t |
t<6 |
Rs=2t |
| Low-alloy Rs under 4t |
6<=t<=10 |
Rs<=2.5t |
| t>10 |
Rs<=3t |
| Distortion |
no obvious distortion |
Under75 |
<=2.5mm/m |
| Above75 |
<=3.0mm/m |
| Wall thickness |
in the range of corresponding tolerance standards of the material |
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| Products |
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