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| Professional Standard Category: Professional Standard - Energy |
NB/T 47013.21-2025 Nondestructive testing of pressure equipments— Part 21: Alternating current field measurement technique (Exposure Draft)
承压设备无损检测 第 21 部分：交流电磁场检测 征求意见稿;
| Category No.: | NB | Valid Status: | valid |
| Issued Organization: | Issued Date: | 2025-06-09 | |
| Implemented Date: | Abolished Date: | ||
| Superseded Standard.: | Superseded Date: |
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