The maximum drilling depth of the rotary drilling rig can reach 70 meters, and the drilling diameter is 600-2400 mm. It is a multi-purpose and powerful rotary pile driver, which can be widely used in various working conditions. It can be equipped with Weichai, Cummins brand engine, Kawasaki hydraulic system, dooson rotary drive reducer, etc. It is widely used in the hole forming of cast-in-place concrete piles in the foundation construction of expressways, railways, bridges, ports and high-rise buildings.