Home / Standards / GB/T 29712-2023 GB/T 29712-2023 Active Non-destructive testing of welds—Ultrasonic testing—Acceptance levels 焊缝无损检测 超声检测 验收等级 Standard Type GBT ICS 25.160.40 CCS J33 Status 现行 Issue Date 2023-11-27 Implementation 2024-06-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A