Our double girder semi gantry crane is a crane type which could be used in storage, carriage, loading and similar other works on the open areas in particular in the specific sectors relating to marble production and manufacturing, steel and iron, roll forming, construction and steel construction in general. The crane which moves on the rails which are floored on the ground has four legs in total. It could be manufactured as single girder and double girder bridged. It is composed of four main groups as lifting group, gantry walking group, bridged group and legs. The electricity installations of the walking roads of these cranes could be made in four different styles. These are cable trolley feeding system, cable drum feeding system, closed bar and open bar feeding systems.