Semi-gantry Crane has a special design structure to suit various crane work situation. It can be single girder and double girder, the two ends connections are different, one side is connected and supported by the crane gantry leg travel on the ground mounted rails, another side is connected and supported by an end carriage travel on the overhead track. Compare to the standard gantry crane, it will save one side support gantry leg, not only reduce the cost, also can expand crane effective work space in some limited workshops. The crane is suitable for indoor and outdoor use, under the lifting hook, there are different lifting tools to choose, such as grab bucket, electromagnet and other lifting tools.