Home / Standards / GB/T 40079-2021 GB/T 40079-2021 Active Classification system and qualification procedures for fugitive emission type testing of valves 阀门逸散性试验分类和鉴定程序 Standard Type GBT ICS 23.060.01 CCS J16 Status 现行 Issue Date 2021-04-30 Implementation 2021-11-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A