Naics code Naics crossreference
331221 Making steel and rolling or drawing steel shapes, or manufacturing concrete reinforcing bars in an iron and steel mill--are classified in Industry 331110, Iron and Steel Mills and Ferroalloy Manufacturing
331221 Drawing wire from purchased steel--are classified in U.S. Industry 331222, Steel Wire Drawing
331221 Manufacturing fabricated structural metal products from concrete reinforcing bars and fabricated bar joists--are classified in U.S. Industry 332312, Fabricated Structural Metal Manufacturing.
331222 Making steel and drawing steel wire--are classified in Industry 331110, Iron and Steel Mills and Ferroalloy Manufacturing
331222 Manufacturing wire products, such as nails, spikes, and paper clips, from purchased steel wire--are classified in Industry 33261, Spring and Wire Product Manufacturing.
33131 Manufacturing aluminum oxide abrasives and refractories--are classified in Subsector 327, Nonmetallic Mineral Product Manufacturing
33131 Sorting, breaking up, and wholesaling scrap aluminum metal without also smelting or refining--are classified in Industry 42393, Recyclable Material Merchant Wholesalers
33131 Operating facilities where commingled recyclable materials, such as paper, plastics, used beverage cans, and metals, are sorted into distinct categories without also smelting or refining--are classified in Industry 56292, Materials Recovery Facilities.
331313 Manufacturing aluminum oxide abrasives and refractories--are classified in Subsector 327, Nonmetallic Mineral Product Manufacturing
331313 Recovering aluminum from scrap or alloying purchased aluminum--are classified in U.S. Industry 331314, Secondary Smelting and Alloying of Aluminum.