General Foundry Service CORP
1390 Business Center Pl, San Leandro, CA 94577
Operating signal within 12 months from two or more independent sources.
What they make
Nonferrous Metal Foundries331521General Foundry Service manufactures aluminum and zinc aluminum castings using green sand, no-bake sand, permanent mold, rubber plaster mold, investment (lost wax), and 3D printed sand mold casting processes. The company offers secondary CNC machining and patternmaking/toolmaking services, and holds ISO 9001:2015 certification and ITAR registration. It serves the medical/surgical equipment, biotech/life sciences, robotics, homeland security/military/defense, semiconductor equipment, telecom/networking, and GPS equipment industries.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Products
Where these came from
CERTIFICATIONS — LISTED ON THE COMPANY’S WEBSITE
- ISO 9001
- ITAR registered
Read from this company’s own website on August 9, 2026. Nobody at the facility has confirmed it here, and FactoryRegistry has not verified these — unlike operating status, which comes from independent public records. A certificate can lapse without the website changing, so ask the facility for current ones.
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Ridge Foundry INC | San Leandro | Iron Foundries 331511 | UNVERIFIED | 0.5 KM |
| Castco | San Leandro | Aluminum Foundries (except Die-Casting) 331524 | UNVERIFIED | 1.1 KM |
| Pcc Structurals - San Leandro | San Leandro | Iron and Steel Mills and Ferroalloy Manufacturing 331110 | ACTIVE | 1.1 KM |
| Precision Founders, INC. Dba Pcc Structurals San Leandro | San Leandro | Steel Investment Foundries 331512 | UNVERIFIED | 1.2 KM |
| Precision Founders Incorporated | San Leandro | Steel Investment Foundries 331512 | LIKELY ACTIVE | 1.2 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 4 FEDERAL SOURCES, 9 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
EPA cross-references this facility in CA-CERS, CA-ENVIROVIEW, NPDES, OSHA-OIS, RCRAINFO · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | AUG 2026 |
| OSHA ITA | OPERATING | DEC 2025 | DEC 2025 |
| SAM GOV | OPERATING | DEC 2025 | DEC 2025 |
| EPA FRS | EXISTENCE | OCT 2018 | OCT 2018 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| ADDRESS LINE1 | SAM GOV | DEC 2025 |
| CAGE CODE | SAM GOV | DEC 2025 |
| CITY | EPA FRS | JUL 2026 |
| CITY | SAM GOV | DEC 2025 |
| EMPLOYEE BAND | OSHA ITA | DEC 2025 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| NAME | SAM GOV | DEC 2025 |
| REGISTRATION EXPIRATION | SAM GOV | DEC 2025 |
| STATE | EPA FRS | JUL 2026 |
| STATE | SAM GOV | DEC 2025 |
| WEBSITE | SAM GOV | DEC 2025 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.