In manufacturing industry, it commonly used bridge crane and gantry crane, mostly being used in the workshop that has a heavy lifting frequency. For example, for some parts production, electronic products need to be completed in the plant, generally using single-beam bridge crane. If the lifting tonnage large, you can choose double-girder bridge crane. Besides, like lifting bulky cargo, manufacting some large machine, need to work outdoors, you can choose the gantry crane, the workspace is not limited. It consists of main beam, end beam, electric hoist and electric equipment.