Home / Standards / GB/T 28426-2021 GB/T 28426-2021 Active Rail heavy-duty maintenance machinery—Rail flaw detection vehicle 铁路大型养路机械 钢轨探伤车 Standard Type GBT ICS 45.120 CCS S22 Status 现行 Issue Date 2021-12-31 Implementation 2022-07-01 Responsible Dept 国家铁路局 Drafting Unit N/A