Qy50b Hydraulic Mobile Crane, truck mounted crane.Hydraulic Mobile Crane,truck mounted crane,truck crane QY50B Truck CraneQY50B Truck Crane adopts self-made XZ50 special chassis, drive ... by single pump or double pumps to obtain low speed with heavy load or high speed with ... Technical SpecificationsTechnical Data for Lifting OperationHydraulic Mobile Crane,truck mounted crane,truck crane..........