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

Plants in California23 FACILITIES

Listing 23 of 55: the facilities with a website, a size band or two sources on record. The rest are in site search.

Facility	City	Employees	Status
Aluminum Die Casting Company, INC.	Jurupa Valley	20–99	● ACTIVE
CWCentral Wire Group	Perris	20–99	◐ LIKELY ACTIVE
Craftech Metal Forming, INC	Perris	—	◐ LIKELY ACTIVE
LGLuxfer Gas Cylinders	Riverside	100–499	◐ LIKELY ACTIVE
PGPacific Gear Technology, INC.	Norco	1–19	◐ LIKELY ACTIVE
SASierra Aluminum CO	Riverside	—	◐ LIKELY ACTIVE
UMUnited Metal Products	Corona	100–499	◐ LIKELY ACTIVE
STSkat Trak	Calimesa	1–19	◐ LIKELY ACTIVE
ADAluminum Die Casting INC	Mira Loma	20–99	◐ LIKELY ACTIVE
RPR P M Centerless Grinding CO	Norco	1–19	◐ LIKELY ACTIVE
HPHarbor Pipe and Steel INC	Riverside	100–499	◐ LIKELY ACTIVE
MAMerit Aluminum Inc.	Corona	100–499	◐ LIKELY ACTIVE
EFEdelbrock Foundry CORP	San Jacinto	—	◐ LIKELY ACTIVE
3F3v Fastners CO INC	Corona	—	◇ UNVERIFIED
Matthews International CORP	Romoland	—	◇ UNVERIFIED
STSteel Technologies LLC	Mira Loma	—	◇ UNVERIFIED
EGEdelbrock Group, LLC	San Jacinto	100–499	◐ LIKELY ACTIVE
LHLuxco Holdings, L.l.c	Eastvale	—	◐ LIKELY ACTIVE
MAMerit Aluminum Inc (Building #2)	Corona	100–499	◐ LIKELY ACTIVE
RSRiverside Steel, Inc.	Perris	100–499	◐ LIKELY ACTIVE
WWildomar	Wildomar	20–99	◐ LIKELY ACTIVE
ASAluminum Seating INC.	Riverside	1–19	◇ UNVERIFIED
TITubeworks INC.	Riverside	—	◇ UNVERIFIED

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