Primary Metal Manufacturing in Washington
NAICS 331 · WA
This register lists 145 facilities in Washington. The Bureau of Labor Statistics counted 96 establishments in Washington. Kaiser Aluminum - Trentwood, located in Spokane Valley, employed 899 people in 2025.
SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE
Map, cities and product lines
Plants in Washington14 FACILITIES
Listing 14 of 23: the facilities with a website, a size band or two sources on record. The rest are in site search.
| Facility | City | Employees | Status |
|---|---|---|---|
| Harbor Island Supply Corporation | Seattle | — | ACTIVE |
| North Star Casteel Products | Seattle | 20–99 | LIKELY ACTIVE |
| North Star Casteel Products | Seattle | 20–99 | LIKELY ACTIVE |
| Nucor Steel Seattle INC | Seattle | — | LIKELY ACTIVE |
| Seacast Seattle | Seattle | — | LIKELY ACTIVE |
| Industrial Container Services Wa LLC | Seattle | — | LIKELY ACTIVE |
| Lower Duwamish Waterway | Seattle | — | LIKELY ACTIVE |
| Meltec a Div of Young CORP | Seattle | — | LIKELY ACTIVE |
| Olympic Foundry INC | Seattle | — | LIKELY ACTIVE |
| Alaskan Copper & Brass CO Ctl | Seattle | — | UNVERIFIED |
| Ge Aircraft Engines | Seattle | — | UNVERIFIED |
| Northwest Castings | Seattle | — | UNVERIFIED |
| Western Steel Casting CO | Seattle | — | UNVERIFIED |
| Levy Environmental Services Company dba SeaTac Steel Mill and Recycling Services | Seattle | 1–19 | LIKELY ACTIVE |
All primary metal manufacturing nationwide · All manufacturing in Washington