7 Machines for the treatment, processing, and production of metals and plastics, namely, milling machines and 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, drawing machines, wire ring presses, metal 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, 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 slab casting machines and machines for the continuous casting of metals, plastic extrusion and plastic molding machines, and structural parts for the aforementioned casting machines; electric power generation machines for rolling, pressing, forging and casting installations; machines for the treatment, processing, and production of metals and plastics, namely, rolling mills and continuous metal casting machines featuring cooling apparatus in the nature of water sprayers and air coolers as integral components thereof; hydraulic driving machines, namely, torque converters not for land vehicles; supporting chain conveyors and hoists, roller tables in the nature of conveyors, tilters in the nature of industrial machines for positioning metal as it is being cut, scale electric washing machines for industrial purposes, and cleaning machines for cleaning roller conveyors, and rolling machines for rolling metals; 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 for cutting and trimming, longitudinally or transversely, rolled metal pipe, rolled profiles, ingots, and strips; flame cutting machines for stripping scale off ingots, blooms and strips; machines for filling and emptying blast furnaces; machines for tilting, pivoting, and moving converters and ladles, namely, cranes and mechanical and hydraulic lifts for manipulating crucibles filled with molten metal so that the metals can be poured into molds of a continuous caster; all the aforementioned machines for the treatment, processing, and production of metals and plastics; machines for the chemical industry, namely, chemical fiber drying machines, extracting machines for chemical processing; machines for agriculture, namely, combines, harvesters, threshers, and tillers; machines for mining, in particular, excavators, cutters, earth and burden movers, loaders, cutters and conveyors; machines for mining, namely, mining shaft excavators, hoists, skips for lifting large loads in mining operations, windlasses; machines for mining, namely, inclined conveyors, winding engines in the nature of hauling engines for driving the drum over which a cable extending along the length of a mine is wound, bucket conveyors, conveyor belts, mine car fillers, unloading machines, and winding towers for carrying a drive drum for mining cables at the surface featuring head frames as integrated components thereof; machines for mining, namely, hydraulic and pneumatic conveyors and solids transporters; machines for mining, namely, pipeline conveyors; machines for mining, namely, waste disposal comminuters, conveyors, loaders for loading containers with radio-active waste, transporters for radioactive waste containers; machines for the treatment, processing and production of metals and plastics, namely, metal coil handlers, metal coil winders, metal coil conveyors, metal coil packagers, metal coil stackers; machines for the treatment, processing and production of metals and plastics, namely, cranes, hoists and clamps being structural parts thereof; machines for the treatment, processing and production of metals and plastics, namely, rolling mill roll replacement machines; motors and engines except for land vehicles, namely, electric motors or electric gear motors; machine coupling and transmission components not for land vehicles, namely, hydraulic and mechanical transmissions for machinery and structural parts therefor