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kelly hexagonal
Selling leads
________________________________________ Product overview: The square drill rod produced and sold by our company Huichi Petro is the core power ...
2025-08-05 00:18:10
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Product Description: Kelly is located at the upper end of the drill string, and there are two types: square and hexagonal. In drilling, when drilling, ...
2025-03-10 21:27:40
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