Model: Double Casing Rock Drilling Bits Crown Bit

DTH and Top Hammer type Double casing drilling tools

Applicationrange

Suitable for geothermal drill for grouting, sampling, water well drill, foundation drill etc.

Workingprinciples

Double head rotary percussive casing system utilizes a rotary head to drive the outer casing equipped with a tungsten carbide crown and a hydraulic drifter (top hammer) to drive the inner drill string equipped with a percussive drill bit. This is an excellent method for drilling straight holes in varying ground conditions. The water and compressed air can be both provided as power.