it shows how to install a overhead bridge crane, Overhead gantry crane, also know as gantry crane, is the kind of overhead crane built atop a gantry that can straddle an object or workspace indoor or outdoor applications. Overhead gantry crane is specially engineered to support the bridge and the electric hoist by strong steel legs instead of moving on suspended runways. The gantry crane legs travel on fixed rails embedded in, or laid on top of the floor or on the wheels to move the gantry around your facility which provide an flexible way to lift materials anywhere. TAVOL overtravelling gantry cranes are designed with the highest engineering standards for safety and high performance by advanced technology. TAVOL manufactures and supplies custom single girder gantry crane and double girder gantry crane with the capacity up to 32 tons and span up to 31.5 meters for your demands.