Home / Standards / GB/T 41057-2021 GB/T 41057-2021 Active Technical requirements for distributed acoustic optical fiber monitoring system on prestressed concrete cylinder pipe 预应力钢筒混凝土管分布式光纤声监测技术要求 Standard Type GBT ICS 17.180.99 CCS A91 Status 现行 Issue Date 2021-12-31 Implementation 2022-07-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A