Double casing drilling tools

• Customized: Customized

• Certification: BIN

• Length: Jobber-length

• Type: Double Head Rotary Percussive

• Assembly: Crown Opener Bit and Inner Opener Bits

• Casing Outer Diameter: 118-216mm

Application range

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

Working principles

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.