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Primary Metal Manufacturing

8,881 FACILITIESAll Census product lines →

NAICS 331

The Primary Metal Manufacturing industry, as defined by NAICS 331, is measured by the Bureau of Labor Statistics to have 6096 establishments in the United States as of 2025. This register lists 8881 facilities across the country. Cleveland-Cliffs Burns Harbor LLC, located in Burns Harbor, employed 4003 people in 2025.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Map, cities and product lines
Map of United States manufacturing facilities

Product lines reported here

These are counts by industry: the Economic Census records what establishments in primary metal manufacturing reported producing, and never names a plant.

Plants in this industry6,017 FACILITIES

Listing 6,017 of 8,881: the facilities with a website, a size band or two sources on record. The rest are in site search.

FacilityCityStateEmployeesStatus
Melt Technologies LPDel ValleTX— ACTIVE
Mendenhall Industries CORPMyrtle BeachSC— ACTIVE
Metalkraft Technologies LLCAlbanyOH— ACTIVE
Mobile Industrial Metal INCTheodoreAL— ACTIVE
Monarca Technical LLCHoustonTX— ACTIVE
Mp Mine Operations LLCMountain PassCA— ACTIVE
Mr Target LLCTempeAZ— ACTIVE
Nemo Industries, INC.BrooklynNY— ACTIVE
New England Foundry LLCTauntonMA— ACTIVE
New Source CORPFullertonCA— ACTIVE
Nucor CorporationBrandenburgKY— ACTIVE
Olympus Engineering and Design Works, INCMillcreekUT— ACTIVE
Optimim LLCWilsonvilleOR100–499 ACTIVE
Pacific Cast Technologies, INC.AlbanyOR— ACTIVE
Paramium Technologies, INC.TusconAZ— ACTIVE
Patriot Steel LLCHarrahOK— ACTIVE
Pennsylvania Precision Cast Parts INCLebanonPA— ACTIVE
Phoenix Tailings INCWoburnMA— ACTIVE
Potomac Resources INCWashingtonDC— ACTIVE
Primary Metals International LLCCape CoralFL— ACTIVE
Pro Tube INCZullingerPA— ACTIVE
Prysmian Cables and Systems Usa, LLCLawrenceburgKY— ACTIVE
Prysmian Cables and Systems Usa, LLCLincolnRI— ACTIVE
Prysmian Group Specialty Cables LLCTauntonMA— ACTIVE
Prysmian Group Specialty Cables LLCTauntonMA— ACTIVE
Ptr Enterprises, INC.GardenaCA— ACTIVE
Quikservice Steel CO of Oklahoma CityOklahoma CityOK— ACTIVE
Rangeview INC.El SegundoCA— ACTIVE
Rareform Metals INC.CampbellCA— ACTIVE
Reelement Technologies Operating CORPFishersIN— ACTIVE
Regenx USA INCNewportTN— ACTIVE
Rescue Engineers, INCDanvilleCA— ACTIVE
Rescue Engineers, INC.AndersonCA— ACTIVE
Revex Technologies, INC.HoughtonMI— ACTIVE
Revora Materials, INC.TappanNY— ACTIVE
Richards Pipe & Steel, INC.PacificWA— ACTIVE
Ridgeline Elements, INC.WynneAR— ACTIVE
Rise Steel LLCMesaAZ— ACTIVE
Rt Welding LLCChino ValleyAZ— ACTIVE
Rudy Iii, ErnestKennedaleTX— ACTIVE
Rushmore Enterprises INCBaytownTX— ACTIVE
Salem Tube, Inc..GreenvillePA100–499 ACTIVE
Skyline Steel, LLCRock HillSC— ACTIVE
Snt Southern Boiler Tubes, LLCHeber SpringsAR— ACTIVE
Solonian Resources, LLCMishawakaIN— ACTIVE
Sophisticated Alloys INCButlerPA— ACTIVE
Sovereign Materials, INC.AustinTX— ACTIVE
Space Alloys USA LLCWindfallIN— ACTIVE
Space Alloys USA LLCWindfallIN— ACTIVE
S. P. Reed INC.EncinitasCA— ACTIVE

Search all 8,881 facilities

Common questions

How many primary metal manufacturing facilities are in the United States?

As of NOV 2026, FactoryRegistry lists 8,881 primary metal manufacturing facilities (NAICS 331) across 53 states, compiled from EPA, OSHA and Census records.

Which state has the most primary metal manufacturing facilities?

California, with 901 facilities listed.

How many primary metal manufacturing facilities are still operating?

4,741 of the 8,881 listed carry a recent operating signal in federal data — the register's Active or Likely active status. The rest are listed from their filings alone, which is a gap in the federal record rather than evidence that a plant has closed.