| 1 | Woolf Aircraft Products Inc. | | USA |
| 2 | Asahi/America Inc. | | USA |
| 3 | Naylor Pipe Co. | | USA |
| 4 | Chicago Metal Rolled Products Co. | | USA |
| 5 | AIRCOM USA Inc. | | USA |
| 6 | MRC Global | | USA |
| 7 | U.S. Industrial Piping Inc. | | USA |
| 8 | Corr Tech Inc. | | USA |
| 9 | HPS Performance Silicone Hoses | | USA |
| 10 | Diversified Air Systems | | USA |
| 11 | Corrosion Products Inc. | | USA |
| 12 | Steel Forgings Inc. | | USA |
| 13 | Piping Systems Inc. | | USA |
| 14 | L.B. Foster Co. | | USA |
| 15 | PPG Aerospace | | USA |
| 16 | Paragon Industries Inc. | | USA |
| 17 | Piping Technology & Products Inc. | | USA |
| 18 | Courtaulds Aerospace Application Support Center – DALLAS | | USA |
| 19 | Plastic Pipe & Supply Inc. | | USA |
| 20 | Courtaulds Aerospace Application Support Center – PHILADELPHIA | | USA |
