GB/T 39963-2021

Active

Technical specification on C80~C100 concrete shaft lining applied in vertical freezing shaft

立井冻结法凿井井壁应用C80～C100混凝土技术规程

Standard Type
GBT
ICS
73.020
CCS
D15
Status
现行
Issue Date
2021-03-09
Implementation
2021-10-01
Responsible Dept
中国煤炭工业协会
Drafting Unit
N/A