Electric motors for machines, engines not for land vehicles; machines for the production, casting and rolling of metal products in the nature of tundishes, nozzles and parts therefor; oscillating conveyors; extraction machines for the extraction of a cast product, as a billet or a slab, from a casting mold; straighteners, namely, machines used to straighten, i e, conveying a straight direction, a cast product before rolling; travel grates, namely, machines which make a cast product advance stepwise; roller boxes, namely, guide boxes with rolls for guiding a cast product into a rolling stand, and rolling stands with rolls for the rolling of a cast product; oscillating tables, namely, machines to make a cast product advance in an oscillating way; auxiliary wire treatment equipment, namely, descalers; dust and fume collecting and extracting machines; transferring groups, namely, machines for the transfer of a rolled product from of to a rolling line; rolling and finishing trains, namely, groups of rolling stands placed in sequence for the rolling of a cast product; cooling beds, namely, machines for the cooling of a rolled product on which a rolled product moves from one bed to another; coil forming machines, namely, machines for forming coils from a straight rolled product; wire winding machines for forming coils on a conveyer, Mineral treatment plants comprised of sorting and palletizing machines for mineral material; cooling groups, namely, power-operated water or liquid or air sprayers

Electronics used in the production casting and rolling of metal products, namely, electric command panels, namely, Programmable Logic Control (PLC) panels for commanding and checking the automated devices of the casting and rolling machines; adjusting and control switches, control units, and speed control units for electric motors and generators; relay panels for automation; electrical and electronic diagrams, namely, displayed and printed graphics regarding the functioning of the casting and rolling machines; process programming and control unit, namely, Central Processing Unit (CPU) and microprocessor for the electronics used in the production, casting and rolling of metal products; electronic measuring instrument to measure and to indicate physical and chemical properties of cast products

Mineral reduction plants comprised of furnace or shaft for the reduction of mineral and metallic material; heat recovery apparatus, namely, heat exchangers for use in controlling air quality; fume purifiers, namely, filters and separators; heating and drying equipment, namely, retorts; electric arc furnaces; direct reduction plants, comprised of metal shaft, liquid scrubber for removal of solid or liquid particles entrained in a gas stream and/or for removal of soluble gaseous constituents of a gas stream; reformers fueled by fuel gas, liquid and exhaust; heat treating machines for the treatment of metals, using gas as source of heat