Home / Standards / GB/T 20935-2025 GB/T 20935-2025 Active Metal materials—Method of electromagnetic acoustic inspection 金属材料 电磁超声检测方法 Standard Type GBT ICS 77.040.20 CCS H26 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A