Casing Twister

Construction Process:

Rotary drilling rig + driver + flower tube, lower casing, down to stable formation, After descending to the stable formation, the lower part is directly drilled with a rotary drilling rig. Instead of using mud to protect the wall, drill a predetermined depth to clear the hole, place a steel cage, pour the concrete, and then use a rotary drilling rig, a puller or a crawler crane to pull out the casing to complete the pile forming operation.