| FEFamco Enterprises INC | Brusly | LA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| FSFedco Steel Corporation | Harrison Town | NJ | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| FWF W M Mechanical | Minden | LA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| GTG&l Tube, LLC | Cookeville | TN | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| HIHallmark Iron Works, Inc | Lorton | VA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| HSHampton Sheet Metal INC. | Newport News | VA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| HPHarbor Pipe and Steel INC | Riverside | CA | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| HSHeidtman Steel Products Inc.-Bedford Tube Mill | Erie | MI | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| HPHigh Performance Alloys INC. | Windfall | IN | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| HMHolte Manufacturing | Veneta | OR | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| IEIms-amco Engineered Products LLC | Des Plaines | IL | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| IMInternational Metal Hose Company | Bellevue | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| LILouis Industries INC | Paynesville | MN | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| MRMartinrea Riverside LLC | Riverside | MO | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| MLMaruichi Leavitt Pipe & Tube | Chicago | IL | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| MSMaruichi Stainless Tube Texas | Seguin | TX | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| MBMba Building Supplies Ne, INC. | Frackville | PA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| MMetalmatic | Minneapolis | MN | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| MIMicrogroup INC | Medway | MA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| MFMurray Fabricating LLC | Perryville | MO | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| NTNucor Tubular Products - Gallatin | Ghent | KY | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| NTNucor Tubular Products - Trinity | Trinity | AL | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| OSOps Sales Company | Dewey | OK | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| PTParagon Tube | Ft Wayne | IN | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| PTParthenon Tube | La Vergne | TN | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| PPPelco Products INC. | Edmond | OK | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| PEPEXCO (Pennsylvania Extruded Tube Co) | Clarks Summit | PA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| P1Poly-Cam 1101 | Anoka | MN | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| PIPRE-heat, Inc. | Oostburg | WI | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| PTProduction Tube Cutting | Dayton | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| PCPrysmian Cables and Systems USA. LLC | Bridgewater Twp | NJ | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| RMRees Memphis Acquisition LLC | Memphis | TN | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| RIRexnord Industries LLC | Auburn | AL | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
Sd Industries | Alexandria | SD | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| SISearing Industries | Rancho Cucamonga | CA | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| SPStandard Pipe Products INC | Garwood | NJ | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| SAStructural and Steel Products | Fort Worth | TX | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| SCStupp CORP | Baton Rouge | LA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| TSTampa Steel & Supply | Tampa | FL | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| TFTaylor Forge Engineered Systems Tulsa | Tulsa | OK | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| TTTEDA TPCO America Corporation EHS | Gregory | TX | Primary Metal Manufacturing331111 | 20-99 | ◐ LIKELY ACTIVE |
| TATenaris Ambridge | Ambridge | PA | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| TCTenaris Coiled Tubes - Downhole Center | Houston | TX | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| TCTexas Couplings L.P. | Spring | TX | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| TTTrans Tube INC | Pontiac | MI | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| TMTw Metals, INC | Forest Park | GA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| VUVam USA | Houston | TX | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| WSWilborn Steel | San Antonio | TX | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
Wisconsin Oven CORP | East Troy | WI | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| 1C104593 - Century Tube LLC | Madison | IN | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |