Home / Standards / GB/T 37432-2019 GB/T 37432-2019 Active Full face tunnel boring machine remanufacturing 全断面隧道掘进机再制造 Standard Type GBT ICS 91.220 CCS P97 Status 现行 Issue Date 2019-05-10 Implementation 2019-12-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A