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| Chinese National Standard Category: Metal mechanical property test method |
| English Title: | Small punch test methods of metallic materials for in-service pressure equipment - Part 3: Method of test for fracture toughness |
| Chinese Title: | 在役承压设备金属材料小冲杆试验方法 第3部分：断裂韧度试验方法 |
| Standard No.: | GB/T 29459.3-2025 |
| Category No.: | H22 |
| Issued by: | SAMR, SAC |
| Issued on: | 2025-10-31 |
| Implemented on: | 2025-10-31 |
| Status: | valid |
| Superseded by: | |
| Superseded on: | |
| Abolished on: | |
| Superseding: | |
| Word Count: | 13000 words |
| Similar Standards: |
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