| 1 | Pipefusion Services Inc. | | USA |
| 2 | High Purity Technology Inc. | | USA |
| 3 | Security Fabricators Inc. | | USA |
| 4 | Osi Plastics | | USA |
| 5 | National Basic Sensor | | USA |
| 6 | Frederiks Machine & Tool Co. Inc. | | USA |
| 7 | United Pipe Nipple Company | | USA |
| 8 | H.S. Martin Inc. | | USA |
| 9 | Industrial Fiberglass Specialties Inc./IFS | | USA |
| 10 | Copeland Supply Co. Inc. | | USA |
| 11 | P.C. Campana Inc. | | USA |
| 12 | Youngstown Tube Company | | USA |
| 13 | Layne | | USA |
| 14 | Imperial Pipe | | USA |
| 15 | Johnson Bros. Roll Forming Co. | | USA |
| 16 | Penn Stainless Products Inc. | | USA |
| 17 | Eagle Stainless Tube & Fabrication Inc. | | USA |
| 18 | Helander | | USA |
| 19 | Appleton Stainless | | USA |
| 20 | ROSS Mixers | | USA |
| 21 | High Temperature Systems Inc. | | USA |
| 22 | WL Plastics Corp. | | USA |
| 23 | Bull Moose Tube Co. | | USA |
| 24 | MetalTek International | | USA |
| 25 | Busada Manufacturing Corporation | | USA |
| 26 | Micromold Products Inc. | | USA |
| 27 | Hays Fluid Controls | | USA |
| 28 | Denier James Co. | | USA |
| 29 | Sewickley Construction Products Inc. | | USA |
| 30 | Stainless Structurals LLC | | USA |
| 31 | Aquatherm | | USA |
| 32 | Town & Country Plastics Inc. | | USA |
| 33 | Miller Plastic Products Inc. | | USA |
| 34 | Simtech Process Systems | | USA |
| 35 | Atlantic Screen & Mfg. Inc. | | USA |
| 36 | F.W. Webb Company Thermoplastic Piping Div. | | USA |
| 37 | Valiant Steel | | USA |
| 38 | Crest Steel Corp. | | USA |
| 39 | Wisconsin Metal Tech | | USA |
