7 Machines for the treatment, processing, and production of metals, namely, milling machines and grinding machines; machines utilizing rotational motion for high energy surface finishing and material treatment, namely, 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 sane, and replacement parts for the aforementioned rolling mills, all of the aforementioned goods for the treatment, processing, and production of metals; rolling mills for wire, steel rod rolling mills, bloom rolling mills, rail rolling mills, and section rolling mills, drawing machines, wire ring presses, reeling machines; machines for manufacturing, processing and working seamless and welded pipes, namely, pipe expanding machines, large pipe manufacturing machines, hot and cold pipe rolling mills; presses for manufacturing, processing and working seamless and welded pipe, namely, extrusion presses, impact extrusion, cold extrusion and back-flow extrusion presses, cable sheathing presses, straightening and bending presses, plate shaping presses, deep-drawing presses, multistage presses, hydraulic metal powder presses, and replacement parts therefor; forging machines, namely, open-die forging machines, automatic forging hammers, forging presses, piercing presses and counter blow hammers, and replacement parts for the aforementioned forging machines; casting machines, namely, continuous steel slab casting machines and machines for the continuous casting of metals, and replacement parts for the aforementioned casting machines; electric power generators for rolling, pressing, forging and casting installations; hydraulic driving machines; supporting chain conveyors and hoists, roller tables, tilters, scale washers, and roller cleaning machines; conveyors for the conveying of rolled, pressed, forged and cast articles to and from rolling, pressing, forging and casting installations; electric and gas welding machines, namely, pipe welding machines, butt-welding machines; cutting machines, namely, pipe blades, flame cutting machines; machines for filling and emptying blast furnaces; machines for tilting, pivoting, and moving converters and ladles; metal coil handlers, metal coil winders, metal coil conveyors, metal coil packagers, metal coil stackers; cranes, hoists and clamps being parts thereof; grinding machines; rolling mill roll replacement machines; electric motors for machines; electric gear motors; machine coupling and transmission components, namely, hydraulic and mechanical transmissions for machinery and replacement parts therefor