●  It is economical and efficient, mainly used in small-diameter pile civil construction;
●  Diesel engine has load induction and output power auto-control;the fuel consumption drops 5-10%;
●  5-level anti-vibration technology absorbs drilling vibrational frequency all-directionally to guarantee high stability;
●  The special lubricating system makes sure that it can work under high-temperature environment;
●  The removable and symmetrical structure design doubles the service life of rotary drive key;
●  Crowd cylinder has two operation modes---normal lifting and fast lifting to improve push efficiency;
●  The rig balance monitoring system can be ordered to enhance construction safety.