Home / Standards / CJ/T 447-2014 CJ/T 447-2014 Active 管道燃气自闭阀 Standard Type CJ ICS N/A CCS N/A Status Active Issue Date 2014-03-27 Implementation 2014-07-01 Centralized Committee 住房和城乡建设部 Issuing Authority 住房和城乡建设部