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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 25048-2019 |
Metallic materials—Tube—Ring tensile test 金属材料 管 环拉伸试验方法 |
China National Standards materials—Tube—Ring |
 English PDF |
| GB/T 25047-2016 |
Metallic materials—Tube—Ring-expanding test 金属材料 管 环扩张试验方法 |
China National Standards materials—Tube—Ring |
English PDF |
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