Home / Standards / GB/T 3203-2016 GB/T 3203-2016 Active Carburizing steels for bearing 渗碳轴承钢 Standard Type GBT ICS 77.140.10 CCS H40 Status 现行 Issue Date 2016-12-30 Implementation 2017-09-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A