| Business | Phone |
| Grant Prideco Inc 5425 Polk St, Houston 77023 | (713) 924-2800 |
| Northwest Pipe Co 6307 Toledo St, Houston 77008 | (713) 863-4300 |
| Precision Tube Technology 8615 Beltway 8 E, Houston 77044 | (281) 458-2883 |
| Texas Steel Conversion Inc 7401 C E King Pkwy, Houston 77044 | (281) 459-2905 |
| Quality Tubing Nov 10303 Sheldon Rd, Houston 77049 | (281) 456-0751 |
| Thomas & Betts Corp 8700 Fairbanks N Houston Rd, Houston 77064 | (713) 466-6761 |