NAICS UNIVERSITY · Free research for insurance agents
Iron and Steel Mills and Ferroalloy Manufacturing
NAICS 331110 · United States · 2022 edition
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) MANUFACTURING 219 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. Ferroalloys add critical elements, such as silicon and manganese for carbon steel and chromium, vanadium, tungsten, titanium, and molybdenum for low- and high- alloy metals. Ferroalloys include iron-rich alloys and more pure forms of elements added during the steel manufacturing process that alter or improve the characteristics of the metal.
Start the review with fire and explosion.
For Iron and Steel Mills and Ferroalloy Manufacturing, the saved research highlights fire and explosion, environmental/pollution liability, workers' compensation. Confirm how these arise in the actual operation, what controls are used and whether additional services change the proposed coverage.
Questions to ask
- What type of steelmaking process is used — electric arc furnace, blast furnace, basic oxygen, or other — and what is the annual production capacity?
- What is the total insurable value of the facility, including furnaces, rolling equipment, and structures?
- Is there any active environmental remediation on-site, or prior Superfund or regulatory enforcement history?
- What fire suppression and molten metal containment systems are in place?
- What is the full workers' compensation payroll and which production class codes apply?
- For Iron and Steel Mills and Ferroalloy Manufacturing, what should the underwriter know about history of environmental regulatory violations, superfund involvement, or active remediation orders?
- For Iron and Steel Mills and Ferroalloy Manufacturing, what should the underwriter know about prior large fire, explosion, or molten metal incident losses?
- For Iron and Steel Mills and Ferroalloy Manufacturing, what should the underwriter know about aging or deferred-maintenance furnace or casting infrastructure with limited inspection records?
Activities described by this code
Other activities to examine
- Operating coke ovens: 324199 — All Other Petroleum and Coal Products Manufacturing
- Manufacturing nonferrous superalloys, such as cobalt or nickel-based superalloys: 331492 — Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum)
- Manufacturing concrete reinforcing bar by rolling and drawing steel from purchased steel: 331221 — Rolled Steel Shape Manufacturing;
- Manufacturing fabricated structural metal products from concrete reinforcing bars and fabricated bar joists-: 332312 — Fabricated Structural Metal Manufacturing
Census classification reference
For educational purposes only. AI-generated insurance research and automated logic can contain errors. Independently verify classification and coverage decisions.
Compare another operationInsurance operations research — draft
Iron and steel mills process raw materials — iron ore, scrap metal, and alloying elements — through high-temperature processes such as electric arc furnaces, blast furnaces, and basic oxygen steelmaking to produce molten steel, pig iron, and finished shapes including bar, rod, plate, sheet, strip, wire, pipe, and tube. Ferroalloy operations add elemental materials such as silicon, manganese, and chromium to adjust steel characteristics. These are continuous or semi-continuous heavy industrial processes operating at extreme temperatures with large, capital-intensive equipment.
Questions to investigate
- What type of steelmaking process is used — electric arc furnace, blast furnace, basic oxygen, or other — and what is the annual production capacity?
- What is the total insurable value of the facility, including furnaces, rolling equipment, and structures?
- Is there any active environmental remediation on-site, or prior Superfund or regulatory enforcement history?
- What fire suppression and molten metal containment systems are in place?
This insurance research was generated in April 2026. It has not received a complete human review. The October 12, 2026 audit checked codes and titles only, not descriptions or coverage assertions.