GB 248-1964

Abolished

Assembled reinforced-concrete supports for roadways in coal mines

装配式钢筋混凝土煤矿巷道支架

Standard Type
GB
ICS
73.100.10
CCS
D97
Status
废止
Issue Date
1964-01-14
Implementation
1964-04-01
Responsible Dept
中国煤炭工业协会
Drafting Unit
N/A