| 1 | Columbia/MBF | | USA |
| 2 | TTGM International (USA) Inc. | | USA |
| 3 | Triple-S-Tubing Supply Ltd | | USA |
| 4 | Platinum Grover Int. Inc. | | USA |
| 5 | Thermal Pipe Systems Inc. | | USA |
| 6 | Pacific Poly-Pipe Products | | USA |
| 7 | Hard Wear Inc. | | USA |
| 8 | Kelolite | | USA |
| 9 | Cooney Brothers Inc. | | USA |
| 10 | Edlon Inc. | | USA |
| 11 | SGL Carbon LLC | | USA |
| 12 | CerCo LLC | | USA |
| 13 | CBP Engineering Corp. | | USA |
| 14 | PCM Co. (Plastics Consulting & Mfg. Co.) | | USA |
| 15 | Industrial Supply & Rental | | USA |
| 16 | B.R. Welding & Industrial Services Inc. | | USA |
| 17 | Nol-Tec Systems Inc. | | USA |
| 18 | Sunnda Corporation | | USA |
| 19 | Townley Engineering & Manufacturing Co. Inc. | | USA |
| 20 | Fab-Tech Inc. | | USA |
| 21 | Composites USA | | USA |
| 22 | Ultra Tech | | USA |
| 23 | Flo-Concepts International | | USA |
| 24 | TPCO Enterprise Inc. | | USA |
| 25 | Ardco Companies | | USA |
| 26 | Ultraflo Systems Inc | | USA |
| 27 | Crane Wafer Check Valve Co. | | USA |
| 28 | Sue-Jac Inc. | | USA |
| 29 | RMB Products | | USA |
| 30 | Stupp Corp. | | USA |
| 31 | Jindal Saw Limited | | USA |
| 32 | Fusibond Piping Systems Inc. | | USA |
| 33 | Sewickley Construction Products Inc. | | USA |
| 34 | Bolton Steel Tube Co. | | USA |
| 35 | Moon Fabricating Corp. | | USA |
| 36 | Berg Steel Pipe Corp. | | USA |
| 37 | Premier Drill Products LLC | | USA |
| 38 | Watertec Irrigation Ltd. | | USA |
| 39 | Ridalco Industries Inc. | | USA |
| 40 | Irp Group | | USA |
| 41 | West Coast Pipe Linings Inc | | USA |
| 42 | Crane Co. | | USA |
| 43 | Saint-Gobain Advanced Ceramics | | USA |
| 44 | Balzer’s Canada Inc. | | USA |
| 45 | Multichair Inc | | USA |
| 46 | American Cast Iron Pipe Company | | USA |
| 47 | Atlantic Tube & Steel Inc. | | USA |
| 48 | Swormsco | | USA |
| 49 | Schwing America Inc. | | USA |
| 50 | Daystar Composites LLC | | USA |
| 51 | Canadian Tube Tooling | | USA |
| 52 | Delta Tubes | | USA |
| 53 | Danby of North America Inc. | | USA |
| 54 | TolPlast Co. | | USA |
| 55 | TAD Pipe Canada Ltd. | | USA |
| 56 | B & B Pipe & Tool Co. | | USA |
| 57 | Badger Process Equipment Inc. | | USA |
| 58 | Fortier 2000 | | USA |
| 59 | Johnson Bros. Roll Forming Co. | | USA |
| 60 | Morris Coupling Co. | | USA |
| 61 | Naylor Pipe Co. | | USA |
| 62 | High Temperature Systems Inc. | | USA |
| 63 | Reliable Source Inc. | | USA |
| 64 | Contech Engineered Solutions LLC | | USA |
| 65 | PEP A Ryan Herco Flow Solutions Company | | USA |
| 66 | The Briggs Company | | USA |
| 67 | Micromold Products Inc. | | USA |
| 68 | Macomber Cryogenics Inc. | | USA |
| 69 | Crane CPE | | USA |
| 70 | Future Pipe Industries | | USA |
| 71 | R 3 Steel | | USA |
| 72 | Kalenborn Abresist Corporation | | USA |
| 73 | Brymer Industries | | USA |
| 74 | MCS Mechanical & Ceramic Solutions Inc. | | USA |
| 75 | Piping Systems Inc. | | USA |
| 76 | Commercial Resins | | USA |
| 77 | Metal One America Inc | | USA |
| 78 | Springs Fabrication Inc. | | USA |
| 79 | Hydril Pressure Control | | USA |
| 80 | Adronaco Industries | | USA |
| 81 | FCX Performance | | USA |
| 82 | Amalga Composites Inc. | | USA |
| 83 | JD Fields & Company Inc. | | USA |
