It is a small and medium-sized crane running on rails. Single girder is suitable for rated lifting weight of 1-20t, double girder is suitable for rated lifting weight of 1 to 50t, applicable span is 12-30 meters, working environment is within -20 -+ 40 This product is a general-purpose crane, which is mostly used for loading and unloading or grabbing materials in open spaces and warehouses.