Maximum Lifting Capacity 20T .It can be installed directly on the roof structure of the existing plant, no longer need bull legs, the customer can save space and real estate costs, and use all the plant space for production. This crane series of trolley running limit size is small, heavy loads can be lifted to a position very close to the wall of the plant, and can be cantilevered through the side of the end of the trolley, so that the traveling range of the trolley beyond the span of the crane.