North American Industry Classification System (NAICS) 2002

31-33 - Manufacturing

This sector comprises establishments primarily engaged in the physical or chemical transformation of materials or substances into new products. These products may be finished, in the sense that they are ready to be used or consumed, or semi-finished, in the sense of becoming a raw material for an establishment to use in further manufacturing. Related activities, such as the assembly of the component parts of manufactured goods; the blending of materials; and the finishing of manufactured products by dyeing, heat-treating, plating and similar operations are also treated as manufacturing activities. Manufacturing establishments are known by a variety of trade designations, such as plants, factories or mills.

Manufacturing establishments may own the materials which they transform or they may transform materials owned by other establishments. Manufacturing may take place in factories or in workers' homes, using either machinery or hand tools.

Certain activities involving the transformation of goods are classified in other sectors. Some examples are post-harvest activities of agricultural establishments, such as crop drying; logging; the beneficiating of mineral ores; the production of structures by construction establishments; and various activities conducted by retailers, such as meat cutting and the assembly of products such as bicycles and computers.

331 - Primary Metal Manufacturing

This subsector comprises establishments primarily engaged in smelting and refining ferrous and non-ferrous metals from ore, pig or scrap in blast or electric furnaces. Metal alloys are made with the introduction of other chemical elements. The output of smelting and refining, usually in ingot form, is used in rolling and drawing operations to produce sheet, strip, bars, rods and wire, and in molten form to produce castings and other basic metal products.

  • Exclusion(s):

    Establishments primarily engaged in:

    • manufacturing metal forgings or stampings (See 332 Fabricated Metal Product Manufacturing)

3313 - Alumina and Aluminum Production and Processing

This industry group comprises establishments primarily engaged in extracting alumina generally from bauxite ore; producing aluminum from alumina; refining aluminum by any process; and rolling, drawing, casting, extruding and alloying aluminum and aluminum-based alloy basic shapes.

33131 - Alumina and Aluminum Production and Processing

This industry comprises establishments primarily engaged in extracting alumina generally from bauxite ore; producing aluminum from alumina; refining aluminum by any process; and rolling, drawing, casting, extruding and alloying aluminum and aluminum-based alloy basic shapes.

  • Exclusion(s):

    Establishments primarily engaged in:

    • pouring non-ferrous molten metal into moulds, or under pressure into dies, to form castings (See 33152 Non-Ferrous Metal Foundries)
331313 - Primary Production of Alumina and AluminumCAN

This Canadian industry comprises establishments primarily engaged in extracting alumina generally from bauxite or producing aluminum from alumina. Establishments engaged in secondary activities, such as rolling, drawing , casting or extruding basic shapes, from aluminum produced in the same establishment, are included.

  • Exclusion(s):

    Establishments primarily engaged in:

    • rolling, drawing, extruding or alloying purchased aluminum (See 331317 Aluminum Rolling, Drawing, Extruding and Alloying)
  • Example Activities:

    • Alumina (aluminum oxide), refining from bauxite
    • Aluminum basic shapes (e.g., bar, ingot, rod, sheet), made in primary aluminum plants
    • Aluminum ingot and other primary production shapes, made in primary aluminum plants
    • Aluminum, producing from bauxite or alumina
    • Ingot, primary aluminum, manufacturing
    • Primary smelting of aluminum
331317 - Aluminum Rolling, Drawing, Extruding and AlloyingCAN

This Canadian industry comprises establishments primarily engaged in rolling purchased aluminum ingots; further hot- or cold-rolling to produce sheet, plate or foil; drawing aluminum alloys into products such as beverage cans and wire; extruding basic shapes; and alloying or re-alloying aluminum or aluminum alloys. Establishments primarily engaged in drawing aluminum wire, whether or not the establishment further works the wire by such operations as insulating it, are included. Establishments primarily engaged in recovering aluminum from scrap are also included.

  • Exclusion(s):

    Establishments primarily engaged in:

    • rolling, drawing, extruding or alloying aluminum produced in the same establishment (See 331313 Primary Production of Alumina and Aluminum)
  • Example Activities:

    • Aluminum alloys, made from purchased metals
    • Aluminum basic shapes (e.g., bar, ingot, rod, sheet), made from purchased aluminum
    • Aluminum billet, made from purchased aluminum
    • Aluminum foil, made by flat rolling purchased aluminum
    • Aluminum ingot, made from purchased aluminum
    • Aluminum wire and cable, made from purchased aluminum
    • Aluminum, recovering from scrap or dross
    • Bar, made from purchased aluminum
    • Energy wire or cable, made in aluminum wire drawing plants
    • Foil, aluminum, made by flat rolling purchased aluminum
    • Ingot, made by rolling purchased aluminum
    • Mesh, wire, made in aluminum wire drawing plants
    • Molten aluminum, made from purchased aluminum
    • Nails, made in aluminum wire drawing plants
    • Pipe, aluminum, made from purchased aluminum
    • Rod, made from purchased aluminum
    • Scrap and dross aluminum, refining into ingot
    • Sheet, aluminum, made by flat rolling purchased aluminum
    • Structural shapes, made from purchased aluminum
    • Wire cloth, made in aluminum wire drawing plants
    • Wire products, made in aluminum wire drawing plants
    • Wire screening, made in aluminum wire drawing plants
    • Wire, aluminum, made in wire drawing plants
    • Wire, armoured, made in aluminum wire drawing plants
    • Wire, bare, made in aluminum wire drawing plants
    • Wire, insulated, made in aluminum wire drawing plants
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