| Business | Phone |
| American Sheet Metal 5421 Old Poole Rd, Raleigh 27610 | (919) 231-2222 |
| Strombeerg Metal Works Inc 5812 Triangle Dr, Raleigh 27617 | (919) 781-2515 |
| Southland Machine Tool Corp 4208 Six Forks Rd, Raleigh 27609 | (919) 571-0666 |
| Royce Co 4821 Hargrove Rd, Raleigh 27616 | (919) 876-2964 |
| J & M Sheetmetal Fabrications 3221 Durham Dr # 101, Raleigh 27603 | (919) 779-4666 |