Home / Standards / GB/T 39789-2021 GB/T 39789-2021 Active Non-destructive testing of welds—Eddy current-video integrated testing method of metal composites weld 焊缝无损检测 金属复合材料焊缝涡流视频集成检测方法 Standard Type GBT ICS 25.160.40 CCS J33 Status 现行 Issue Date 2021-03-09 Implementation 2021-10-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委