Circulation drill is within the power head parts hanging in chutes, and slide up and down while a rotary drilling rig, is ideal for bored pile drilling machinery. It and Yu diving rig and disc rig fever advantages Yu a, while also distribution has three species speed gear, can transform (31 turned, and 66 turned, and 93 turned) three species speed, rig in into hole speed, bit pressure, and nursing arm, into hole vertical degrees for formation environment and so on, get significantly improve to makes the rig of using sex more strengthening, for formation more widely.

While greatly reducing the cost of operation and maintenance, it is suitable for silt, clay, sand, gravel, weathered rock, shale and other formations of the drill. Circulation drill is widely used in construction, water conservancy, port, power, electricity, dewatering, wells, bridges and other infrastructure construction.