Variant of NAICS 2012 - Content and media sector

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)

  • manufacturing metal forgings or stampings (See 332 Fabricated metal product manufacturing)

3311 - Iron and steel mills and ferro-alloy manufacturing

This industry group comprises establishments primarily engaged in smelting iron ore and steel scrap to produce pig iron in molten or solid form; converting pig iron into steel by the removal, through combustion in furnaces, of the carbon in the iron. These establishments may cast ingots only, or also produce iron and steel basic shapes, such as plates, sheets, strips, rods and bars, and other fabricated products. Electric arc furnace mini-mills are included. Establishments primarily engaged in producing ferro-alloys are also included.

3312 - Steel product manufacturing from purchased steel

This industry group comprises establishments primarily engaged in manufacturing iron and steel pipe and tube, drawing steel wire, and rolling steel shapes, from purchased steel.

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.

3314 - Non-ferrous metal (except aluminum) production and processing

This industry group comprises establishments primarily engaged in smelting, refining, rolling, drawing, extruding and alloying non-ferrous metal, except aluminum.

• Exclusion(s)

  • smelting, refining, rolling, drawing, extruding and alloying aluminum (See 3313 Alumina and aluminum production and processing)

3315 - Foundries

This industry group comprises establishments primarily engaged in pouring molten metal into moulds or dies to form castings.

• Exclusion(s)

  • forging and stamping metal (See 3321 Forging and stamping)