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
Plants in California20 FACILITIES
Listing 20 of 62: the facilities with a website, a size band or two sources on record. The rest are in site search.
| Facility | City | Employees | Status |
|---|---|---|---|
| General Foundry Service CORP | San Leandro | 20–99 | ACTIVE |
| Mdc Precision LLC | Hayward | 100–499 | ACTIVE |
| Morgan Advanced Ceramics, INC. | Hayward | 100–499 | ACTIVE |
| Pcc Structurals - San Leandro | San Leandro | 100–499 | ACTIVE |
| Applied Ceramics, INC. | Fremont | — | ACTIVE |
| Centerline Precision Tube Bending INC | Dublin | — | ACTIVE |
| Coulter Forge, LLC | Emeryville | — | ACTIVE |
| Rotometals, INC | San Leandro | 1–19 | ACTIVE |
| Sp Manufacturing INC | Livermore | — | ACTIVE |
| Pressure Cast Products Corporation | Oakland | 1–19 | LIKELY ACTIVE |
| Tesla, INC. | Fremont | — | LIKELY ACTIVE |
| Cass INC | Oakland | 100–499 | UNVERIFIED |
| Clamp-swing Pricing CO INC | Oakland | 1–19 | LIKELY ACTIVE |
| Simpson Strong Tie Company INC | Pleasanton | 500+ | LIKELY ACTIVE |
| United States Pipe and Foundry Company Dba U.s. Pi | Union City | — | LIKELY ACTIVE |
| California Waste Solutions | Oakland | — | UNVERIFIED |
| Cerro Metal Products Company | Newark | — | UNVERIFIED |
| Davis Wire Coporation | Hayward | — | UNVERIFIED |
| Mzd Acquisitions INC Dba Moz Designs INC | Oakland | 20–99 | UNVERIFIED |
| Pacific Steel Casting Company | Berkeley | — | REPORTED CLOSED |
All primary metal manufacturing nationwide · All manufacturing in California