# NAICS 331110: Iron and Steel Mills and Ferroalloy Manufacturing

Breadcrumb: [NAICS codes](https://bidrover.com/naics) › [331110 Iron and Steel Mills and Ferroalloy Manufacturing](https://bidrover.com/naics/331110)

This industry comprises establishments primarily engaged in one or more of the following: (1) direct reduction of iron ore; (2) manufacturing pig iron in molten or solid form; (3) converting pig iron into steel; (4) making steel; (5) making steel and manufacturing shapes (e.g., bar, plate, rod, sheet, strip, wire); (6) making steel and forming pipe and tube; and (7) manufacturing electrometallurgical ferroalloys.

- NAICS code: 331110
- Title: Iron and Steel Mills and Ferroalloy Manufacturing
- Sector: 31-33 Manufacturing
- Subsector: 331 Primary Metal Manufacturing
- Industry group: 3311 Iron and Steel Mills and Ferroalloy Manufacturing
- SBA size standard: 1,500 employees
- Open bids on BidRover: 0

## Open bids (0)

No open bids cite this code right now.

## Frequently asked questions

### What is NAICS code 331110?

NAICS 331110 is "Iron and Steel Mills and Ferroalloy Manufacturing" in the 2022 North American Industry Classification System, in sector 31-33 (Manufacturing). This industry comprises establishments primarily engaged in one or more of the following: (1) direct reduction of iron ore; (2) manufacturing pig iron in molten or solid form; (3) converting pig iron into steel; (4) making steel; (5) making steel and manufacturing shapes (e.g., bar, plate, rod, sheet, strip, wire); (6) making steel and forming pipe and tube; and (7) manufacturing electrometallurgical ferroalloys.

### What is the SBA size standard for NAICS 331110?

A business is small under NAICS 331110 at or below 1,500 employees, including affiliates (13 CFR 121.201). Confirm the standard named in each solicitation.

### How many government bids are open under NAICS 331110?

No open bid in BidRover cites NAICS 331110 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 331110 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

- [324199 All Other Petroleum and Coal Products Manufacturing](https://bidrover.com/naics/324199)
- [331492 Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum)](https://bidrover.com/naics/331492)
- [331221 Rolled Steel Shape Manufacturing](https://bidrover.com/naics/331221)
- [332312 Fabricated Structural Metal Manufacturing](https://bidrover.com/naics/332312)

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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.