Home / Standards / GB/T 9452-2023 GB/T 9452-2023 Active Test method for qualified work 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 现行 Issue Date 2023-05-23 Implementation 2023-12-01 Responsible Dept 国家标准委 Drafting Unit N/A