Home / Standards / GB/T 41749-2022 GB/T 41749-2022 Active General requirements for surface condition of hot-rolled sections 热轧型钢表面质量一般要求 Standard Type GBT ICS 77.140.70 CCS H44 Status 现行 Issue Date 2022-10-12 Implementation 2022-10-12 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A