Home / Standards / GB/T 22082-2024 GB/T 22082-2024 Active Reinforced concrete segments 预制混凝土衬砌管片 Standard Type GBT ICS 91.100.40 CCS Q14 Status 现行 Issue Date 2024-10-26 Implementation 2025-05-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A