Home / Standards / GB/T 46978-2026 GB/T 46978-2026 Active Non-destructive testing—Methods of alternating current field measurement (ACFM) for metal structures 无损检测 金属结构交流电磁场检测方法 Standard Type GBT ICS 19.100 CCS J04 Status 现行 Issue Date 2026-01-28 Implementation 2026-01-28 Responsible Dept 国家标准委 Drafting Unit N/A