| Business | Phone |
| Cross River Metals 8700 Crownhill Blvd 206, San Antonio 78209 | (210) 824-1750 |
| International Tube & Pipe Inc 6800 Park Ten Blvd, San Antonio 78213 | (210) 366-4823 |
| Intersteel Corp 9901 W Ih 10, San Antonio 78230 | (210) 408-1500 |
| Ferrostaal Inc 800 E Sonterra Blvd 280, San Antonio 78258 | (210) 495-6010 |