Home / Standards / GB/T 38901-2020 GB/T 38901-2020 Active Fiber reinforced concrete shield segments 纤维混凝土盾构管片 Standard Type GBT ICS 91.100.40 CCS Q14 Status 现行 Issue Date 2020-06-02 Implementation 2021-05-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A