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Rotary Drilling Tools Double Cutter Double Bottom Rock Bucket With Bullet Teeth

Rotary Drilling Tools Double Cutter Double Bottom Rock Bucket With Bullet Teeth

Rotary Drilling Tools Double Cutter Double Bottom Rock Bucket With Bullet Teeth

Rotary Drilling Tools Double Cutter Double Bottom Rock Bucket With Bullet Teeth Brief Introduction: 1.It is used for rock layers with rock hardness less than 80Mpa. 2.Sand layer with high water ...

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