Product Introduction： There are box hook gantry cranes and lattice hook gantry cranes for hook gantry cranes, and there are also single and double girder types. Gantry crane products are suitable for loading, unloading and handling operations in open-air warehouses, yards, railway freight stations, port dock cargo areas, etc. Hook gantry cranes can also be equipped with a variety of special spreaders (electromagnetic chucks, grabs) for some special operations. Users should indicate the highest and lowest temperatures of the working environment and the type of power supply and other technical requirements when selecting. Double-main-girder hook gantry crane is a semi-customized machinery, and the track size and other parameters need to be determined according to your on-site conditions and requirements. Specification and model: The specification of double-main-girder gantry crane is namely the lifting capacity, span, and lifting height. The lifting capacity: 20T, 32T, 50T, 60T, 70T, 80T, 90T, 100T, 120T, 200T,…