NAICS 33131 - Alumina and Aluminum Production and Processing
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What is NAICS 33131
NAICS code 33131 covers establishments engaged primarily in the production and processing of alumina and aluminum. This includes refining alumina from bauxite ore, the primary production of aluminum metal from alumina, and the recovery of aluminum from scrap or dross. Additionally, businesses under this code alloy purchased aluminum and manufacture aluminum primary forms such as bars, foils, pipes, plates, rods, sheets, tubes, and wires. Companies operating in this sector range from large integrated producers to specialized processors and recyclers. Government agencies contract these services to ensure a reliable supply of aluminum materials essential for infrastructure, defense, aerospace, transportation, and manufacturing applications where lightweight, durable, and corrosion-resistant metals are critical.
Industry Classification for NAICS 33131
This industry comprises establishments primarily engaged in one or more of the following: (1) refining alumina; (2) making (i.e., the primary production) aluminum from alumina; (3) recovering aluminum from scrap or dross; (4) alloying purchased aluminum; and (5) manufacturing aluminum primary forms (e.g., bar, foil, pipe, plate, rod, sheet, tube, wire).
Breakdown for NAICS 33131
- Includes alumina refining and primary aluminum production from alumina.
- Covers recovery of aluminum from scrap and alloying purchased aluminum.
- Encompasses manufacturing of aluminum primary forms like bars, sheets, and wires.
- Typical contract sizes range from moderate to large, often multi-year agreements.
- Businesses must comply with government quality and environmental standards.
- Key sector for defense, aerospace, and infrastructure government needs.
Included Activities for NAICS 33131
- Refining alumina from bauxite ore.
- Producing primary aluminum metal from alumina.
- Recovering aluminum from scrap metal and dross.
- Alloying aluminum to create specialized metal blends.
- Manufacturing aluminum bars, sheets, wires, tubes, and foils.
- Ensuring compliance with government quality and environmental standards.
- Supplying aluminum products for aerospace and defense applications.
- Conducting metal processing and finishing services.
Business Types for NAICS 33131
- Alumina refining companies
- Primary aluminum production facilities
- Aluminum recycling and scrap processing firms
- Aluminum alloy manufacturers
- Metal fabrication and processing companies
- Specialized aluminum product suppliers
Government Buyers for NAICS 33131
Federal government agencies such as the Department of Defense (DoD), Department of Energy (DoE), and NASA are primary buyers of alumina and aluminum products. These agencies require aluminum materials for aircraft, military vehicles, energy infrastructure, and space exploration equipment. The General Services Administration (GSA) and other procurement bodies also purchase aluminum products for construction, maintenance, and manufacturing needs across multiple government departments. These agencies depend on contractors under NAICS 33131 to meet stringent quality, quantity, and delivery requirements essential for mission-critical applications.
Contract Types & Procurement for NAICS 33131
Contracts in this sector typically include firm-fixed-price and indefinite-delivery/indefinite-quantity (IDIQ) agreements, allowing for flexibility in supply volumes. Procurements often proceed through competitive bidding, request for proposals (RFP), and multi-year supply contracts. Contract values can range from moderate to large, depending on the volume and complexity of aluminum products required. Government contracts may also include quality assurance provisions, environmental compliance clauses, and sustainability requirements to ensure performance and regulatory adherence.
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