Double beam gantry crane is applied to open air warehouse or railways for loading and unloading as well as lifting work. Accompanied with particular lifting tools, it could be used for container. It has features of beautiful appearance, perfect performance, low cost, easy maintenance, durability and so on. It is widely used in open warehouses, material stocks area, cement plant, granite industry, construction industry, engineering industry, railway station to lifting and loading goods. It also can be use together with other lifting appliance for special purpose. The lifting capacity is 5-500tons. The span is of 18-30 meters.