Home / Standards / GB/T 23904-2025 GB/T 23904-2025 Active Non-destructive testing—Test method for ultrasonic testing by surface wave 无损检测 超声表面波检测方法 Standard Type GBT ICS 19.100 CCS J04 Status 现行 Issue Date 2025-05-30 Implementation 2025-09-01 Responsible Dept 国家标准委 Drafting Unit N/A