Home / Standards / GB/T 1591-2018 GB/T 1591-2018 Active High-strength low-alloy structural steels 低合金高强度结构钢 Standard Type GBT ICS 77.140.01 CCS H40 Status 现行 Issue Date 2024-10-30 Implementation 2019-02-01 Responsible Dept N/A Drafting Unit N/A