Home / Standards / GB/T 37683-2019 GB/T 37683-2019 Active Large gear and girth gear forgings—Technical specification 大型齿轮、齿圈锻件 技术条件 Standard Type GBT ICS 77.140.85 CCS J32 Status 现行 Issue Date 2019-06-04 Implementation 2019-06-04 Responsible Dept 中国机械工业联合会 Drafting Unit N/A