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管钻头 [guǎn zuàn tóu]
[机] pipe bit
- 井架用来吊升分节油管，把石油放入由钻头打出的孔中。
It is used to lift sections of pipe, which are lowered into the hole made by the drill. - 当取心钻具采用双层管时，钻进所用的钻头就需要用普通双管钻头。
Conventional double tube bits should be used as bits for drilling, while coring tool is double tube. - 本文介绍了薄壁管专用钻头的结构特点及工作原理，其结构设计新颖，对薄壁管的钻削有实用价值。
In this paper, the structure feature and principle of this special drill has been introduced. Its special design is very useful for drilling thin-wall pipe.
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