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Primary Metal Manufacturing in Colorado

NAICS 331 · CO

This register lists 96 facilities in Colorado. The Bureau of Labor Statistics counted 40 establishments in the Primary Metal Manufacturing industry in Colorado. CF&I Steel LP dba Rocky Mountain Steel Mills, located in Pueblo, employed 1181 people in 2025.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Map, cities and product lines

Biggest counties

Pueblo13Arapahoe12Denver11Larimer10Adams9Jefferson9Weld6Boulder4

Biggest cities

Plants in Colorado59 FACILITIES

Listing 59 of 96: the facilities with a website, a size band or two sources on record. The rest are in site search.

FacilityCityEmployeesStatus
Arc Colorado, INCLongmont100–499 ACTIVE
Golden Aluminum INCFort Lupton— ACTIVE
Heritage Die Casting Company, INC.Denver1–19 ACTIVE
High Plains Steel Services, LLCWindsor20–99 ACTIVE
Precision Casting Prototypes and Engineering INCCommerce City— ACTIVE
Rocky Mountain Steel INC.Olathe20–99 ACTIVE
Rubadue Wire CO INCLoveland20–99 ACTIVE
Facop LLCFlorence— ACTIVE
Fortius Metals, INC.Lafayette— ACTIVE
High-tek Tube CORPLittleton— ACTIVE
Steel Ops LTD.Fort Collins— ACTIVE
Clayens Us, LLCLoveland— ACTIVE
Falcon Copper Works CORP.Timnath— ACTIVE
Castings, INCGrand Junction1–19 LIKELY ACTIVE
Metal Castings of Colorado INC.Loveland20–99 LIKELY ACTIVE
Midwest Fabrication and Steel LLCPueblo20–99 LIKELY ACTIVE
Zimmerman Metals INCDenver20–99 LIKELY ACTIVE
Dionisio Metal and Iron INCPueblo20–99 LIKELY ACTIVE
Zimkor Industries IncorporatedLittleton20–99 LIKELY ACTIVE
Perma Cast COPueblo1–19 LIKELY ACTIVE
Rocky Mountain Steel MillPueblo— LIKELY ACTIVE
Climax Molybdenum-henderson MillParshall— LIKELY ACTIVE
Golden Aluminum INC. - Fort Lupton MillFort Lupton— LIKELY ACTIVE
Western Foundries INCLongmont— LIKELY ACTIVE
Mile Hi Metal FoundryDenver— UNVERIFIED
Bronze Services of Loveland, INC.Loveland1–19 LIKELY ACTIVE
Lands End Sculpture Center, INC.Paonia1–19 LIKELY ACTIVE
Winner Foundries & Mfg COArvada1–19 UNVERIFIED
Accu-Tube - DenverDenver20–99 LIKELY ACTIVE
Acme Manufacturing CODenver100–499 LIKELY ACTIVE
CF&I Steel LP dba Rocky Mountain Steel MillsPueblo500+ LIKELY ACTIVE
J.w. Reffel Metals Foundry INCEnglewood— LIKELY ACTIVE
Precision Welding LLCWellington— LIKELY ACTIVE
Acme Foundry INCDenver— UNVERIFIED
Aleco Container LLCArvada— REPORTED CLOSED
Andersen's Sales & Salvage INCGreeley— UNVERIFIED
Atlas Metal & Iron CORPDenver— UNVERIFIED
Atlas Metals & Iron CORPDenver— UNVERIFIED
Chuck LorentzMontrose— UNVERIFIED
Consolidated Steel SvcEnglewood— UNVERIFIED
Davis Wire Pueblo CORP.Pueblo— UNVERIFIED
Electrasteel INCBoulder— UNVERIFIED
Electron LittletonLittleton— UNVERIFIED
Fountain Foundry Dba F F Acquisition COPueblo— UNVERIFIED
Genesis Fixtures IncorporatedFort Collins— UNVERIFIED
Goltra Castings CO INCGolden— REPORTED CLOSED
Hydro Gate Acquisition CorporationCommerce City— UNVERIFIED
Iron & Metals INCDenver— UNVERIFIED
Kloppenberg & COSheridan— UNVERIFIED
Mercury Tube - 3211 W Bear Creek DrEnglewood— UNVERIFIED

Search all 96 facilities

All primary metal manufacturing nationwide · All manufacturing in Colorado