Ld single girder overhead crane is widely used in various places such as factory, warehouse, stuff yard to lift goods, forbidden to use in flammable, explosive and corrosive environment. The girder and end beam of overhead crane are connected together by high strength bolts to ensure the structure strength and precision of the whole machine. The end beams of this bridge traveling crane are equipped with flat wheel or double rim wheels, anti-friction bearings, buffer blocks and derailment preventing end plate. The maintenance walkway of ld single girder overhead crane is located on one side of the main girder, consisting of flower pattern plate, 1050 meters handrail. Lifting capacity: 1~20 t Span length: 7.5~28.5 m Lifting height: 6~18 m Lifting speed: single/double/variable speed Working class: a3, a4 Ambient temperature: -20~40 degree