... Hydraulic Crawler Crane maturely applies key techniques, such as super lift control, twin-winch synchronous control QUY50 Hydraulic Crawler CraneHydraulic ... of pilot proportional control in China domestic crawler cranes. This crane is easy operation, stable travel and ... ~52m, jib length9.15m~15.25m. This crane is suitable for lifting and installation job in ... 3.40*3.40 50Tons Hydraulic Crawler Crane