TB/T 1558.4-2010.Non-destructive testing of welding for rlling stock Part 4:Magnetic particle testin...
TB铁路运输标准
TB铁路运输标准
TB铁路运输标准
TB/T 1558.4-2018 机车车辆焊缝无损检测第4部分:磁粉检测
TB/T 1558.4-2018.Non-destructive testing of welding for rolling stock-Part 4: Magnetic particle test...