Metal Fabrication
Top 6 Structural Steel Manufacturers in Illinois 2026
Last updated
6listings
FirmsLedger lists 6 structural steel manufacturers headquartered in Illinois. That ranks 3rd among the 47 states with listings, behind Alabama (11) and Iowa (7). They are spread across 6 cities, including Elmhurst, Gilberts, Granite City and La Salle.
By specialty, Illinois has welding (11), sheet metal fabrication (10), powder coating (3) and laser cutting (2) listings. Capabilities that more than one of them list include custom fabrication (2).
| Company | City | Specialty | Phone | Website |
|---|---|---|---|---|
| Selvaggio Steel, Inc. | Springfield | Structural steel fabrication | (217) 528-4078 | selvaggiosteel.com |
| Valley Fabrication, Inc. | La Salle | Custom fabrication | (815) 223-4058 | valleyfabinc.com |
| Crown Metal Manufacturing Co. | Elmhurst | Stamping (conventional and CNC turret punch press) | (630) 279-9800 | crownmetal.com |
| Harmony Metal Fabrication | Gilberts | Angle Rolling | (847) 426-8900 | harmonymetalfab.com |
| Walters Metal Fabrication | Granite City | Structural steel fabrication | (618) 931-5551 | waltersmetalfab.com |
| Jameson Steel Fabrication Inc | Oakwood | Structural steel fabrication and fit-up | (217) 354-2205 | jamesonsteel.com |
Frequently asked questions
Which structural steel manufacturers in Illinois list custom fabrication?
2 companies list it: Valley Fabrication and Jameson Steel Fabrication.