LDA Type Electric Single-girder Crane has such features as reasonable structurefine rigidity.It is a kind of light-small hoisting machinery.Its lifting capacity is 1t~10t,its span is 7.5~22.5m, working classification is A3~A5the ambient temperature is -25~+40℃. This kind of cranes is applicable to carryunload objects at mechanical processing workshopswarehouses etc.It can be controlled from the ground、in the drivers cabin、remote control、groundremote control、in the drivers cabinremote control etc. LB Explosion-proof Electric Single-girder Crane fitted with HB explosion-proof electric hoist, explosion-proof control boxother explosion-proof electrical equipments. It is usually controlled from the ground,it is a kind of lightsmall crane with track。 Its explosion-proof mark is Ex。It is applicable at such sites with explosive gas mixture combined by combustible gas, steamairthe classification is ⅡA、ⅡB、ⅡCthe temperature group is T1~T4。