Home / Standards / GB/T 3273-2026 GB/T 3273-2026 Upcoming Hot-rolled steel sheet and strip for automobile frames 汽车大梁用热轧钢板及钢带 Standard Type GBT ICS 77.140.50 CCS H46 Status 即将实施 Issue Date 2026-03-31 Implementation 2026-10-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A