HS4207 tower crane is a hydraulic self-erecting tower crane with upper slewing, horizontal jib and trolley mechanism. It’s max. Nominal lifting moment is 315kN•m, freestanding height is 27m, the max. Lifting height can reach up to 100m after being tied in wall, Max lifting Capacity is 3t and work range is 42m. It can be widely used and not only can satisfy general civil constructions in small-medium cities, but also can satisfy high-rise buildings in large-medium cities. Meanwhile, it is available to constructions on multilayer large-span industrial premises, tower-shape structure such as tall chimney and silo with slip form technology, as well as loading and unloading in wharf and goods yards.