| 1 | Dritherm International Inc. | | USA |
| 2 | Mannesmann DMV Stainless | | USA |
| 3 | Cust-O-Bend | | USA |
| 4 | U.S. Industrial Piping Inc. | | USA |
| 5 | Rockwell Industries International Corp. | | USA |
| 6 | Hanna Rubber Company | | USA |
| 7 | Farmer’s Marine Copper Works Inc. | | USA |
| 8 | Summerill Tube Corp. | | USA |
| 9 | Simtech Process Systems | | USA |
| 10 | Coltwell Industries | | USA |
| 11 | Stainless Specialties Inc. | | USA |
| 12 | ABT Inc. | | USA |
| 13 | Shaw Stainless & Alloy | | USA |
| 14 | Eagle Alloys Corp. | | USA |
| 15 | Cooney Brothers Inc. | | USA |
| 16 | Tex-Fin Inc. | | USA |
| 17 | Aquatherm | | USA |
| 18 | Thermacor Process L.P. | | USA |
| 19 | A Metal Source LLC | | USA |
| 20 | Insul-Tek Piping System Inc. | | USA |
| 21 | Interstate Metals | | USA |
| 22 | Vulcan Finned Tubes L.P. | | USA |
| 23 | All Metal Sales Corp | | USA |
| 24 | Infra-Metals Co. | | USA |
| 25 | California Metal & Supply Inc. | | USA |
| 26 | Asahi/America Inc. | | USA |
| 27 | A-1 Alloys | | USA |
| 28 | Fin Tube Products Inc. | | USA |
| 29 | Reliable Source Inc. | | USA |
| 30 | Precision Welding & Fabrication | | USA |
| 31 | MetalTek International | | USA |
| 32 | Rudy and Associates | | USA |
| 33 | Mega Mex | | USA |
| 34 | Tricon Piping Systems Inc. | | USA |
| 35 | Global Metals | | USA |
| 36 | Future Pipe Industries | | USA |
| 37 | Graphite Central | | USA |
| 38 | Southeast Texas Industries Inc. | | USA |
| 39 | Victrex USA Inc. | | USA |
| 40 | Perma-Pipe Inc. | | USA |
| 41 | Tube Methods Inc. | | USA |
| 42 | Corrosion Materials | | USA |
| 43 | Piping Systems Inc. | | USA |
| 44 | United Pipe Nipple Company | | USA |
| 45 | Spiratex Co. | | USA |
| 46 | Federal Steel Supply Inc. | | USA |
| 47 | Rickard Metals | | USA |
| 48 | Charlotte Pipe & Foundry Co. | | USA |
