GB/T 40122-2021

Active

Full face tunnel boring machine—Rectangular earth pressure balance pipe jacking machine

全断面隧道掘进机 矩形土压平衡顶管机

Standard Type
GBT
ICS
91.220
CCS
P97
Status
现行
Issue Date
2021-05-21
Implementation
2021-12-01
Responsible Dept
中国机械工业联合会
Drafting Unit
N/A