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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| NB/T 11169—2023 |
Technical Specifications for Directional Drilling of Long Boreholes for Underground Coal Mine Gas Drainage {译} 煤矿井下瓦斯抽采长钻孔定向钻进技术规范 |
China Energy Industry
Standards Specifications mine directional |
 English PDF |
| NB/T 10174-2019 |
Specifications for mine directional drilling measurement-while-drilling device {译} 矿用定向钻进随钻测量装置技术条件 |
China Energy Industry
Standards Specifications mine directional |
English PDF |
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