Home / Standards / JG/T 562-2018 JG/T 562-2018 Active 预制混凝土楼梯 Standard Type JG ICS N/A CCS N/A Status Active Issue Date 2018-04-26 Implementation 2018-12-01 Centralized Committee 住房和城乡建设部 Issuing Authority 住房和城乡建设部