Non-magnetic drill collar and non-magnetic pressure-bearing drill pipe

Release time:

2022-01-07

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This article is reproduced from the original force document, infringement will be deleted.

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Drill pipe, document, infringement, reprinted from, original, this article.

GBT 15663.8-2008 coal mine technical terms-Part 8: Coal mine safety

Advantages of non-magnetic drill pipe-Yikuang Technology

GBT 15663.8-2008 coal mine technical terms-Part 8: Coal mine safety

Advantages of non-magnetic drill pipe-Yikuang Technology

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