7 Machines for the rolling of metals, namely, milling machines, grinding machines, and machines utilizing rotational motion for high energy surface finishing and material treatment, in particular, heavy, medium and light section rolling mills, cold and hot mills, strip and wide strip mills, plate and sheet mills, blooming, slabbing and billet mills, universal mills, planetary mills, multi-purpose cold mills, rod, bar and tube mills, continuous mills, reversing mills, pilgrim mills, detaching mills and mills for the rolling of steel, iron, aluminum and copper or for the rolling of alloys of the same, and structural parts for the aforementioned rolling mills, rolling mills for wire, steel rod rolling mills, bloom rolling mills, rail rolling mills, and section rolling mills; mechanical equipment, namely, wire drawing machines, wire ring presses, wire reeling machines, machines for manufacturing, processing and working seamless and welded metal pipes, namely, pipe expanding machines, large pipe manufacturing machines, hot and cold pipe rolling mills, presses, in particular, extrusion presses, impact extrusion, cold extrusion and back-flow extrusion presses, cable sheathing presses, straightening and bending presses, plate shaping presses, deep-drawing presses, multi-stage presses, hydraulic metal powder presses, and structural parts therefor, forging machines, in particular, open-die forging machines, automatic forging hammers, forging presses, piercing presses and counter blow hammers, and structural parts for the aforementioned forging machines, casting machines, in particular, continuous steel slabcasting machines and machines for the continuous casting of metals, and structural parts for the aforementioned casting machines, electricity generators, namely, power generation machines for rolling, pressing, forging and casting installations, hydraulic driving machines, supporting chain conveyors and hoists, roller tables, tilters, scale washers, and cleaning machines for cleaning roller conveyors, conveyors for the conveying of rolled, pressed, forged and cast articles to and from rolling, pressing, forging and casting installations, electric welding machines, in particular, pipe welding machines, butt-welding machines, cutting machines, in particular, pipe blades, flame cutting machines, hoists, conveyors and loading machines for filling blast furnaces with iron ore, coke and limestone and emptying iron and slag from blast furnaces, machines for tilting, pivoting, and moving converters and ladles, all of the above mentioned machines for the treatment, processing and production of metals, and installations composed thereof, namely, rolling mills for the production of metals, pressing, casting, and forging installations for the production of metals; and component parts and replacement parts thereof for the rolling of metals; motors and engines except for land vehicles; machine coupling and transmission components except for land vehicles