| Business | Phone |
| Global Steel 910 W Van Buren St, Chicago 60607 | (312) 409-7727 |
| Fer Steel Inc 635 N Dearborn St, Chicago 60610 | (312) 440-0610 |
| Finbarr Steel Llc 107 W Delaware Pl B, Chicago 60610 | (312) 335-1660 |
| Fbs Group Inc 6513 W 64th St, Chicago 60638 | (773) 229-8675 |
| Dockside Steel Llc 1700 W 74th Pl, Chicago 60636 | (773) 925-1979 |
| Defender Steel Door Co Inc 9001 S Western Ave, Chicago 60620 | (773) 445-7320 |