based on universal hook bridge on the derived developed

in order to achieve within the span and height within the prescribed composition in three-dimensional space for handling and for loading and unloading goods.grab bucket crane is the most widely used, has an orbit crane capacity of the largest, the rated lifting weight from several tons to several hundred tons. Is the most basic form of universal hook bridge crane, floor mounted jib crane other forms basically are based on universal hook bridge on the derived developed.