Home / Standards / GB/T 2585-2021 GB/T 2585-2021 Active Hot-rolled steel rails for railway 铁路用热轧钢轨 Standard Type GBT ICS 77.140.60;45.080 CCS H52 Status 现行 Issue Date 2021-03-09 Implementation 2021-10-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会