Application of Rotary Drilling Rig in Full Sand Layer

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2020-10-04 13:56:27 - Translate -

A rotary drilling rig is a more advanced construction method in the construction of bored piles in recent years. The principle of pile formation is to rotate a barrel drill bucket with a valve under the combined force of the torque of the drill pipe and the pressure system. The drill slag that is rotated during the rotation of the drill bucket enters the drill bucket from the bottom of the...

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