Home / Standards / GB/T 8121-2002 GB/T 8121-2002 Abolished The terminology of technological materials for heattreatment 热处理工艺材料术语 Standard Type GBT ICS 25.200 CCS J36 Status 废止 Issue Date 2002-04-16 Implementation 2002-12-01 Responsible Dept 国家标准委 Drafting Unit N/A