When using the double-head drilling process, a drilling system is used which uses separately coordinated drilling tools, which is driven by a rotary drill drive, a percussion drill drive or a rotary impact drill drive. As a rule, the drilling process rotates in opposite directions between outer and inner pipes.

On the inside, a hammer drill pipe is used, which is driven by a hydraulic hammer drill, which is located above the rotary drive. The outside is usually worked with a smooth frame, which is driven by the rotary drive. The outer and inner rods rotate in opposite directions of rotation.

Overall, the double-head drilling process is an effective way to speed up drilling tasks, increase productivity and achieve precise results. It has established itself as a valuable technique in specialist civil engineering, and benefits from its versatility and efficiency.