Home / Standards / GB/T 33522-2017 GB/T 33522-2017 Active Carburizing bearing steel forgings——Technical specifications 渗碳轴承钢锻件 技术条件 Standard Type GBT ICS 77.140.85 CCS J32 Status 现行 Issue Date 2017-02-28 Implementation 2017-09-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A