Home / Standards / GB/T 40399-2021 GB/T 40399-2021 Active General technical conditions for precast concrete part of prefabricated construction 装配式混凝土建筑用预制部品通用技术条件 Standard Type GBT ICS 91.100.30 CCS Q14 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A