GB 40880-2021

Active

Specification for coal mine gas classification identification

煤矿瓦斯等级鉴定规范

Standard Type
GB
ICS
13.100
CCS
D09
Status
现行
Issue Date
2021-10-11
Implementation
2022-05-01
Responsible Dept
国家矿山安监局
Drafting Unit
N/A