Overhead cranes are divided into single girder bridge cranes and double girder bridge cranes. They are lifting devices that transport materials in warehouses, workshops, and material yards. Their end beams are installed on tall cement pillars or metal supports resembling a bridge structure. Bridge cranes have the features of small volume, light weight, strong bearing capacity, low wheel pressure, and low clearance which effectively increases space utilization while reducing investment costs for factories. It has a large lifting weight, uniform load, and smooth operation. The main beams and end beams are connected by high-strength bolts & positioning pins making them easy to dismantle,reducing transportation costs.