| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Crane CPE | USA | |
| 2 | American Iron & Alloys LLC. | USA | |
| 3 | DBJ Corporation | USA | |
| 4 | Everett J. Prescott Inc. | USA | |
| 5 | Perma-Pipe Inc. | USA | |
| 6 | C.I. Thornburg Co. Inc. | USA | |
| 7 | Urecon Systems Inc. | USA | |
| 8 | Electrosteel USA | USA | |
| 9 | Meridian Valves | USA | |
| 10 | Sewickley Construction Products Inc. | USA | |
| 11 | Cooney Brothers Inc. | USA | |
| 12 | Ultraflo Systems Inc | USA | |
| 13 | U.S. Pipe | USA | |
| 14 | Metro-Tex Fabricators Inc | USA | |
| 15 | American Cast Iron Pipe Company | USA | |
| 16 | Jindal Saw Limited | USA | |
| 17 | Tyler Pipe Co. | USA | |
| 18 | C&B Piping Inc. | USA | |
| 19 | US Pipe & Foundry Co. | USA | |
| 20 | American Cast Iron Pipe Co. (ACIPCO) | USA | |
| 21 | Tubular King USA | USA | |
| 22 | Precision Pipe & Vessel LLC. | USA |
