The weight of the metal structure

single girder overhead crane Metal structure is a metal rolling steel (e.g., Angle steel, channel steel, i-steel, steel pipe, etc.) and steel plate as a basic building block, wall mount jib crane through the methods of welding, riveting, bolt connection, according to certain rules of connection, under gravity and load of the crane steel structure. The weight of the metal structure about accounts for 40% ~ 40% of the weight, heavy crane can reach