الوصف

Automatic control of engine’s rotary speed for energy saving; Open-type hydraulic system with the fully hydraulic steering, the electrohydraulic cushion, and the differential pressure response, which provides high reliability and slight steering shocking; The pumping volume reaches **0m3/h, and the stepless control is adopted to meet various working conditions; Automatic retraction of concrete piston, which facilitates the checking and the replacing; The text display is adopted to show the operation parameters and the fault types. Also the multiple automatic protection system is equipped.