La juventud como parte de las sociedades industriales

and non-ferrous metals from ore, pig or scrap, using electrometallurgic and other process metallurgic techniques. This division also includes the manufacture of metal alloys and super-alloys by introducing other chemical elements to pure metals. The output of smelting and refining, usually in ingot form, is used in rolling, drawing and extrunding operations to make products, such as plate, sheet, strip, bars, rods, wire, tubes, pipes and hollow profiles, and in molten form to make castings and other basic metal products.

241 Manufacture of basic iron and steel

This class includes operations of conversion by reduction of iron ore in blast furnaces and oxygen converters or of ferrous waste and scrap in electric are furnaces or by direct reduction of iron ore without fusion to obtain crude steel which is smelted and refined in a ladle furnace and then poured and solidified in a continous caster in order to produce semi-finished flat or long products, which are used, after reheating, in rolling, drawing and extruding operations to manufacture finished products such as plate, sheet, strip, bars, rods, wire, tubes, pipes and hollow profiles.

This class includes :

Operation of blast furnaces, steel converters, rolling and finishing mills

Production of pig iron and spiegeleisen in pigs, blocks or other primary forms

Production of ferro-alloys

Production of ferrous products by direct reduction of iron and other spongy ferrous products

Production of iron of exceptional purity by electrolysis or other chemical processes

Production of granular iron and iron powder

CLASS 1994 Rev 4 code Production of steel in ingots or other primary forms

Remelting of scrap ingots of iron or steel Production of semi-finished products of steel

Manufacture of hot-rolled and cold-rolled flat rolled products of steel Manufacture of hot-rolled bars and rods of steel

Manufacture of hot-rolled open sections of steel

Manufacture of steel bars and solid sections of steel by cold drawing, grinding or turning

Manufacture of open sections by progressive cold forming on a roll mill or folding on a press of flat-rolled products of steel

Manufacture of wire of steel by cold drawing or stretching

Manufacture of sheet piling of steel, and welded open sections of steel

Manufacture of railway track materials (unassembled rails) of steel Manufacture of seamless tubes, pipes and hollow profiles mof steel, by hot rolling, hot extrusion or hot drawing, or by cold drawing or cold rolling

Manufacture of welded tubes and pipes of steel, by cold or hot forming and welding, delivered as welded or further processed by cold drawing or cold rolling or manufactured by hot forming, welding and reducing

Manufacture of tube fittings of steel, such as flat flanges and flanges with forged collars, butt-welded fittings, threaded fittings and socket-welded fittings

This class excludes :

Manufacture of tubes, pipes and hollow profiles and of tube or pipe fittings of cast-iron, see 2431;

Manufacture of seamless tubes and pipes of steel by centrifugal casting, see 2431;

Manufacture of tube or pipe fittings of cast-steel, see 2431.

2411 24110 Operation of blast furnaces and steel making furnaces D27110 2410 241 2412 Operation of steel works and rolling mills

24121 Operation of rolling mills D27121 2410 241

24122 Pipes and tubes manufacturing, iron or steel D27122 2410 241

24123 Manufacture of pipe fittings of iron or steel D27123 2410 241

24124 Manufacture of galvanized steel sheets, tinplates and other coated metal products made in steel works of rolling mills

D27124 2410 241

24129 Operation of steel works and rolling mills, n.e.c. D27129 2410 241 242 Manufacture of basic precious and other non-ferrous metals

This class includes :

CLASS 1994 Rev 4 code Production of basic precious metals : production and refining of

unwrought or wrought precious metals - gold, silver, platinum, etc.

from ore and scrap

Production of precious metal alloys Production of precious metal semi-products Production of silver rolled onto base metals Production of gold rolled onto base metals or silver

Production of platinum and platinum group metals rolled onto gold, silver or base metals

Production of aluminium from alumina

Production of aluminium from electrolytic refining of aluminum waste and scrap

Production of aluminum alloys Semi-manufacturing of aluminum Production of lead, zinc and tin from ores

Production of lead, zinc and tin from electrolytic refining of lead, zinc and tin waste and scrap

Production of lead, zinc and tin alloys Semi-manufacturing of lead, zinc and tin Production of copper from ores

Production of copper from electrolytic refining of copper waste and scrap

Production of copper alloys Manufacture of fuse wire or strip Semi-manufacturing of copper

Production of chrome, manganese, nickel etc. from ores or oxides Production of chrome, manganese, nickel, etc. from electrolytic and aluminothermic refining of chrome, manganese, nickel etc. from waste and scrap

Production of alloys of chrome, manganese, nickel, etc.

Semi-manufacturing of chrome, manganese, nickel, etc.

Production of mattes of nickel

Production of uranium metal from pitchblende or other ores Smelting and refining of uranium

This class also includes :

CLASS 1994 Rev 4 code Manufacture of wire of these metals by drawing

Production of aluminium oxide (alumina) Production of aluminium wrapping foil

Manufacture of aluminium (tin) foil laminates made from aluminium (tin) foil as primary component

Manufacture of precious metal foil laminates This class excludes :

Casting of non-ferrous metals, see 2432;

Manufacture of precious metal jewelry, see 3211.

2421 24210 Gold and other precious metal refining D27210 2420 242

2422 24220 Non-ferrous smelting and refining , except precious metals D27220 2420 242 2423 24230 Non-ferrous rolling, drawing and extrusion mills D27230 2420 242 2424 24240 Manufacture of pipe fittings of non-ferrous metals D27240 2420 242 2429 24290

Manufacture of basic precious and other non-ferrous metals, n.e.c.

D27290 2420 242

243 Casting of metals

This group includes the manufacture of semi-finished products and various castings by a casting process.

2431 Casting of iron and steel

This class includes the casting of iron and steel, i.e. the activities of iron and steel foundries.

This class includes :

Casting of semi-finished iron products Casting of grey iron castings

Casting of spheroidal graphite iron castings Casting of malleable cast-iron products

Manufacture of tubes, pipes and hollow profiles and of tube or pipe fittings of cast-iron

Casting of semi-finished steel products Casting of steel castings

Manufacture of seamless tubes and pipes of steel by centrifugal casting

Manufacture of tube or pipe fittings of cast-steel

24311 Casting/foundry of iron D27311 2431 243

24312 Casting/foundry of steel D27312 2431 243

2432 Casting of non-ferrous metals This class includes :

CLASS 1994 Rev 4 code Casting of semi-finished products of aluminum, magnesium, titanium,

zinc, etc.

Casting of light metal castings Casting of heavy metal castings Casting of precious metal castings Die-casting of non-ferrous metal castings

24321 Aluminum and aluminum base alloy casting D27321 2432 243

24322 Copper and copper base alloy (brass, bronze) casting D27322 2432 243

24323 Zinc and zinc alloy casting D27323 2432 243

24329 Casting of non-ferrous metal, n.e.c. D27329 2432 243

DIVISION 25. MANUFACTURE OF FABRICATED METAL