Home / Standards / GB/T 28417-2023 GB/T 28417-2023 Active Carbon bearing steel 碳素轴承钢 Standard Type GBT ICS 77.140.20 CCS H 40 Status 现行 Issue Date 2023-11-27 Implementation 2024-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A