Mechanical conveyor devices and complete installations for logistical operations in the field of metallurgy and rolling mill technology, namely, conveyor installations for the direct and indirect transport of metal coils in the nature of complete coils and split coils, of slabs, billets, sheets and plates, reels, rollers and pipes, namely, discontinuous conveyors, walking beam conveyors, transport and lifting trolleys, tilting cradles, transfer devices, transfer trolleys, storage and retrieva...