Home / Standards / GB/T 29712-2013 GB/T 29712-2013 Abolished 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 废止 Issue Date 2013-09-18 Implementation 2014-06-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委