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石油铸井是什么

发布时间: 2025-05-22 10:17:45

Ⅰ 石油钻探用的钻头是什么做的

钢材呀，其实按照牙轮钻头、PDC钻头、取芯钻头及球磨钻头等分类，均是由不同配件铸造和组装而成的。

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