Home / Standards / GB/T 9452-2012 GB/T 9452-2012 Abolished Testing method for working zone of heat treatment furnace 热处理炉有效加热区测定方法 Standard Type GBT ICS 25.200 CCS J36 Status 废止 Issue Date 2012-09-03 Implementation 2013-03-01 Responsible Dept 国家标准委 Drafting Unit N/A