| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Reliable Source Inc. | USA | |
| 2 | Metal Cutting Corp. | USA | |
| 3 | MetalTek International | USA | |
| 4 | Southeast Texas Industries Inc. | USA | |
| 5 | Vita Needle Co. | USA | |
| 6 | Merit Brass Co. | USA | |
| 7 | Cust-O-Bend | USA | |
| 8 | Nippon Steel Corp. | USA | |
| 9 | Tube Methods Inc. | USA | |
| 10 | Corrosion Materials | USA | |
| 11 | Federal Steel Supply Inc. | USA | |
| 12 | Grand Rock Co. Inc. | USA | |
| 13 | United Pipe Nipple Company | USA | |
| 14 | Hard Wear Inc. | USA |
