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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 22522-2021 |
Metric series wires for measuring screw threads 测量螺纹用米制系列量针 |
China National Standards Metric series wires |
 English PDF |
| GB/T 39522-2020 |
Metric series wires for the pitch diameters of screw threads 螺纹中径米制系列量针 |
China National Standards Metric series wires |
English PDF |
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