Home / Standards / CJ/T 511-2017 CJ/T 511-2017 Active 铸铁检查井盖 Standard Type CJ ICS N/A CCS N/A Status Active Issue Date 2017-03-20 Implementation 2017-09-01 Centralized Committee 住房和城乡建设部 Issuing Authority 住房和城乡建设部