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Primary Metal Manufacturing in California

NAICS 331 · CA

This register lists 901 facilities in California. The Bureau of Labor Statistics counted 474 establishments in California. CALIFORNIA STEEL INDUSTRIES, located in Fontana, employed 717 people in 2025.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Map, cities and product lines

Biggest counties

Los Angeles309San Bernardino107Orange75Alameda62Riverside55San Diego53Santa Clara42Ventura24

Biggest cities

Plants in California49 FACILITIES

Listing 49 of 107: the facilities with a website, a size band or two sources on record. The rest are in site search.

FacilityCityEmployeesStatus
Karan and Associates, INCFontana1–19 ACTIVE
R. Kern Engineering & Manufacturing CORP.Chino20–99 ACTIVE
Tst INCFontana100–499 ACTIVE
Angeles Precision Engineering, INC.Ontario— ACTIVE
Calidad, INC.Ontario— ACTIVE
Pacific Corrugated Pipe Company LLCFontana— ACTIVE
Pac - Rancho, INC.Rancho Cucamonga— ACTIVE
Inland Machine Company INC.Rancho Cucamonga— ACTIVE
California Steel Industries INCFontana500+ LIKELY ACTIVE
Northwest Pipe COAdelanto100–499 LIKELY ACTIVE
Vista Metals CORPFontana100–499 LIKELY ACTIVE
California Die Casting INCOntario20–99 LIKELY ACTIVE
Forged Metals INCFontana100–499 LIKELY ACTIVE
Searing IndustriesRancho Cucamonga100–499 LIKELY ACTIVE
Citation PrecisionRancho Cucamonga— LIKELY ACTIVE
Net Shapes INCOntario— LIKELY ACTIVE
Atlas Pacific CORPBloomington1–19 LIKELY ACTIVE
Hogan CO INCBloomington20–99 UNVERIFIED
TamcoRancho Cucamonga— UNVERIFIED
Advanced Precision, INC.Chino— LIKELY ACTIVE
California Steel IndustriesFontana500+ LIKELY ACTIVE
Infinity Contacts, INC.Rancho Cucamonga— REPORTED CLOSED
Merit FoundryAdelanto20–99 LIKELY ACTIVE
Sierra Aluminum- FinishingFontana100–499 LIKELY ACTIVE
Barnmaster Supply LLC Dba MarnmasterOntario— LIKELY ACTIVE
Lock Ridge Tool Company INCUpland20–99 LIKELY ACTIVE
Net Shapes INCOntario— LIKELY ACTIVE
Regional Steel CORPFontana— LIKELY ACTIVE
Sierra Aluminum CompanyFontana— LIKELY ACTIVE
Tree Island Steel Dba Tree Island Wire USA INCSan Bernardino20–99 LIKELY ACTIVE
Advanced Pattern and MoldOntario— UNVERIFIED
Alum Alloy CO INCOntario— UNVERIFIED
American Eagle Wheel CorporationChino— UNVERIFIED
Ameron Steel Fabrication DivisionFontana— UNVERIFIED
Performance Aluminum ProdOntario— UNVERIFIED
Salvage I Recycling INCChino— UNVERIFIED
T.i. WireEtiwanda— UNVERIFIED
Sierra Aluminum - BonanzaFontana100–499 LIKELY ACTIVE
Sierra Aluminum - NAPAFontana20–99 LIKELY ACTIVE
Sierra Aluminum - UnionFontana20–99 LIKELY ACTIVE
West Coast Spiral PipeRialto20–99 LIKELY ACTIVE
American Die CastingFontana— UNVERIFIED
Camco Machine INCFontana1–19 UNVERIFIED
Garner Holt ProductionsSan Bernardino— UNVERIFIED
Hartman Industries Dba Commercial Casting CompanyFontana20–99 UNVERIFIED
Montclair Bronze INCMontclair1–19 UNVERIFIED
The Hrem INCFontana1–19 UNVERIFIED
The Carlstar Group LLCOntario— REPORTED CLOSED
Tree Island WireRancho Cucamonga— REPORTED CLOSED

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All primary metal manufacturing nationwide · All manufacturing in California