# NAICS 331313: Alumina Refining and Primary Aluminum Production

Breadcrumb: [NAICS codes](https://bidrover.com/naics) › [331313 Alumina Refining and Primary Aluminum Production](https://bidrover.com/naics/331313)

This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) refining alumina (i.e., aluminum oxide) generally from bauxite; (2) making aluminum from alumina; and/or (3) making aluminum from alumina and rolling, drawing, extruding, or casting the aluminum they make into primary forms.

- NAICS code: 331313
- Title: Alumina Refining and Primary Aluminum Production
- Sector: 31-33 Manufacturing
- Subsector: 331 Primary Metal Manufacturing
- Industry group: 3313 Alumina and Aluminum Production and Processing
- NAICS industry: 33131 Alumina and Aluminum Production and Processing
- SBA size standard: 1,300 employees
- Open bids on BidRover: 0

## Open bids (0)

No open bids cite this code right now.

## Frequently asked questions

### What is NAICS code 331313?

NAICS 331313 is "Alumina Refining and Primary Aluminum Production" in the 2022 North American Industry Classification System, in sector 31-33 (Manufacturing). This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) refining alumina (i.e., aluminum oxide) generally from bauxite; (2) making aluminum from alumina; and/or (3) making aluminum from alumina and rolling, drawing, extruding, or casting the aluminum they make into primary forms.

### What is the SBA size standard for NAICS 331313?

A business is small under NAICS 331313 at or below 1,300 employees, including affiliates (13 CFR 121.201). Confirm the standard named in each solicitation.

### How many government bids are open under NAICS 331313?

No open bid in BidRover cites NAICS 331313 right now. Many state and local notices do not list a NAICS code, so a keyword alert for this work catches more of them.

### How do I get alerts for NAICS 331313 bids?

Save an alert on this page. A free account gets new matching bids by weekly email; the Team plan ($19/mo) sends daily alerts with match scores, the buyer, source link and documents.

## Related NAICS codes

- [331314 Secondary Smelting and Alloying of Aluminum](https://bidrover.com/naics/331314)
- [331315 Aluminum Sheet, Plate, and Foil Manufacturing](https://bidrover.com/naics/331315)
- [331318 Other Aluminum Rolling, Drawing, and Extruding](https://bidrover.com/naics/331318)

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Code titles and definitions: U.S. Census Bureau, North American Industry Classification System (NAICS), 2022 (https://www.census.gov/naics/). Size standards: U.S. Small Business Administration, Small Business Size Standards, 13 CFR 121.201, eCFR text current as of 2026-10-21 (https://www.ecfr.gov/current/title-13/section-121.201).

BidRover lists bids from official public sources. It is not an issuing authority; confirm the NAICS code and size standard named in each solicitation.