Primary Metal Manufacturing in Maryland
NAICS 331 · MD
The register lists 37 facilities in Maryland. The Bureau of Labor Statistics counted 58 establishments in Maryland. CAMBRIDGE INTERNATIONAL, located in Cambridge, employed 136 people in 2025.
SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE
Map, cities and product lines
Plants in Maryland3 FACILITIES
Listing 3 of 4: the facilities with a website, a size band or two sources on record. The rest are in site search.
| Facility | City | Employees | Status |
|---|---|---|---|
| Maryland Metals Processing, INC. | Sparrows Point | 20–99 | LIKELY ACTIVE |
| Rg Steel Sparrows Point LLC | Sparrows Point | — | LIKELY ACTIVE |
| Amtrol Inc Baltimore | Sparrows Point | 1–19 | LIKELY ACTIVE |
All primary metal manufacturing nationwide · All manufacturing in Maryland