Home / Standards / GB/T 8121-2012 GB/T 8121-2012 Active The terminology of technological materials of heat treatment 热处理工艺材料 术语 Standard Type GBT ICS 25.200 CCS J36 Status 现行 Issue Date 2012-09-03 Implementation 2013-03-01 Responsible Dept 国家标准委 Drafting Unit N/A