Single-bridge overhead crane: This type of crane can be used in indoor environments of sheds, silos and halls and has the capacity to transfer material up to 20 tons. This type of cranes in sheds with a maximum width of 25 meters (in special cases, it can be designed and built with more capacity and width) can meet the needs of the employer with the best and highest quality. This type of overhead cranes are used in small industries and to transfer materials, objects and loads with low volume and width. Single bridge overhead crane is the best option for halls up to 20 meters and loading capacity up to 10 tons, but it is possible to build this type of cranes up to 40 meters. Maintenance and repair cost of single bridge overhead crane is lower than double overhead crane. And periodic inspections according to the planning of each organization and regarding the use of these types of cranes should be done once every 6 months. The structure of the single bridge overhead crane is in the form of a beam, which is made of sheet metal or of standard iron beams, which is connected to two conductors on both sides. The elevators are hung on the lower wing of the overhead crane and carry out the loading and transfer of materials or equipment inside the hall or shed. The following equipment can be used in the elevators: magnetic grabs and...