DJ | Métallurgie et travail des métaux | Manufacture of basic metals and fabricated metal products |
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| 27 | Métallurgie | Manufacture of basic metals |
| 27.1 | Sidérurgie | Manufacture of basic iron and steel and of ferro-alloys |
| 27.10 | Sidérurgie | Manufacture of basic iron and steel and of ferro-alloys |
| 27.2 | Fabrication de tubes | Manufacture of tubes |
| 27.21 | Fabrication de tubes en fonte | Manufacture of cast iron tubes |
| 27.22 | Fabrication de tubes en acier | Manufacture of steel tubes |
| 27.3 | Autres opérations de première transformation du fer et de l'acier | Other first processing of iron and steel |
| 27.31 | Étirage à froid | Cold drawing |
| 27.32 | Laminage à froid de feuillards | Cold rolling of narrow strip |
| 27.33 | Profilage à froid par formage ou pliage | Cold forming or folding |
| 27.34 | Tréfilage à froid | Wire drawing |
| 27.4 | Production de métaux non ferreux | Manufacture of basic precious and non-ferrous metals |
| 27.41 | Production de métaux précieux | Precious metals production |
| 27.42 | Métallurgie de l'aluminium | Aluminium production |
| 27.43 | Métallurgie du plomb, du zinc ou de l'étain | Lead, zinc and tin production |
| 27.44 | Métallurgie du cuivre | Copper production |
| 27.45 | Métallurgie des autres métaux non ferreux | Other non-ferrous metal production |
| 27.5 | Fonderie | Casting of metals |
| 27.51 | Fonderie de fonte | Casting of iron |
| 27.52 | Fonderie d'acier | Casting of steel |
| 27.53 | Fonderie de métaux légers | Casting of light metals |
| 27.54 | Fonderie d'autres métaux non ferreux | Casting of other non-ferrous metals |
| 28 | Travail des métaux | Manufacture of fabricated metal products, except machinery and equipment |
| 28.1 | Fabrication d'éléments en métal pour la construction | Manufacture of structural metal products |
| 28.11 | Fabrication de constructions métalliques | Manufacture of metal structures and parts of structures |
| 28.12 | Fabrication de menuiseries métalliques | Manufacture of builders' carpentry and joinery of metal |
| 28.2 | Fabrication de réservoirs métalliques et de chaudières pour le chauffage central | Manufacture of tanks, reservoirs and containers of metal; manufacture of central heating radiators and boilers |
| 28.21 | Fabrication de réservoirs, citernes et conteneurs métalliques | Manufacture of tanks, reservoirs and containers of metal |
| 28.22 | Fabrication de radiateurs et de chaudières pour le chauffage central | Manufacture of central heating radiators and boilers |
| 28.3 | Chaudronnerie | Manufacture of steam generators, except central heating hot water boilers |
| 28.30 | Chaudronnerie | Manufacture of steam generators, except central heating hot water boilers |
| 28.4 | Forge, emboutissage, estampage; métallurgie des poudres | Forging, pressing, stamping and roll forming of metal; powder metallurgy |
| 28.40 | Forge, emboutissage, estampage; métallurgie des poudres | Forging, pressing, stamping and roll forming of metal; powder metallurgy |
| 28.5 | Traitement des métaux; mécanique générale | Treatment and coating of metals; general mechanical engineering |
| 28.51 | Traitement et revêtement des métaux | Treatment and coating of metals |
| 28.52 | Opérations de mécanique générale | General mechanical engineering |
| 28.6 | Fabrication de coutellerie, d'outillage et de quincaillerie | Manufacture of cutlery, tools and general hardware |
| 28.61 | Fabrication de coutellerie | Manufacture of cutlery |
| 28.62 | Fabrication d'outillage | Manufacture of tools |
| 28.63 | Fabrication de serrures et de ferrures | Manufacture of locks and hinges |
| 28.7 | Fabrication d'autres ouvrages en métaux | Manufacture of other fabricated metal products |
| 28.71 | Fabrication de fûts et emballages métalliques similaires | Manufacture of steel drums and similar containers |
| 28.72 | Fabrication d'emballages métalliques légers | Manufacture of light metal packaging |
| 28.73 | Fabrication d'articles en fils métalliques | Manufacture of wire products |
| 28.74 | Visserie et boulonnerie; fabrication de chaînes et de ressorts | Manufacture of fasteners, screw machine products, chain and springs |
| 28.75 | Fabrication d'ouvrages divers en métaux | Manufacture of other fabricated metal products n.e.c. |
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