Home / Standards / GB/T 44840-2024 GB/T 44840-2024 Active Welding procedure qualification test for upset (resistance butt) and flash welding 电阻对焊和闪光对焊的焊接工艺评定试验 Standard Type GBT ICS 25.160.10 CCS J33 Status 现行 Issue Date 2024-10-26 Implementation 2025-05-01 Responsible Dept 国家标准委 Drafting Unit N/A