Home / Standards / GB/T 43246-2023 GB/T 43246-2023 Active Technical requirements for full face tunnel boring machine manufacturing management and supervision 全断面隧道掘进机制造监理技术要求 Standard Type GBT ICS 03.080.99 CCS A20 Status 现行 Issue Date 2023-09-07 Implementation 2024-01-01 Responsible Dept 国家标准委 Drafting Unit N/A