| PTPhoenix Tube CO | Bethlehem | PA | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| PTPtc Tubular Products LLC | Fairbury | IL | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| RCRepublic Conduit | Louisville | KY | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| TDTubacex Durant INC. | Durant | OK | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| TMTube Methods, INC. | Bridgeport | PA | Primary Metal Manufacturing331210 | 100-499 | ▲ REPORTED CLOSED |
| VTVallourec Tube-alloy, LLC | Houma | LA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
Webco Industries INC Kellyville Specialty Tube | Kellyville | OK | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
Webco Industries, INC. Ok Dist. Div | Tulsa | OK | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| WTWelded Tube USA INC | Lackawanna | NY | Primary Metal Manufacturing331111 | 100-499 | ◐ LIKELY ACTIVE |
| WTWheatland Tube CO - Chicago Div | Chicago | IL | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| MIMetal-matic INC | Bedford Park | IL | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| AIAccellent Inc/collegeville Microcoax | Collegeville | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| APAlleima Precision Tube LLC | Scottdale | PA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| ATAmerican Tube & Conduit | Phoenix | AZ | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| APAxis Pipe and Tube, INC. | Bryan | TX | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| BSBenteler Steel/tube Manufacturing CORP | Shreveport | LA | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| BPBlue Patriot Fab | Omaha | NE | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| BBBorusan Berg Pipe | Panama City | FL | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
Cenergy LLC | Milton | WV | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| CWCharter Wire, LLC | Milwaukee | WI | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| DIDelong's Incorporated | Sedalia | MO | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| FBFelker Brothers Corporation | Marshfield | WI | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| HDHercules Drawn Steel CORP | Livonia | MI | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| ITIndiana Tube CORP | Evansville | IN | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| IKIpsco Koppel Tubular CORP Ambridge | Ambridge | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| ITIpsco Tubulars INC | Blytheville | AR | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| JTJackson Tube Services INC | Piqua | OH | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| MIMaico Industries INC | Ellsworth | KS | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| MMMajor Metals Company | Mansfield | OH | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| MTMaverick Tube LP Blythev L | Blytheville | AR | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| MTMid-ohio Tubing, LLC | Decatur | AL | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| MSModern Sheet Metal Works, INC. | Miamitown | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| NPNaylor Pipe CO | Chicago | IL | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| NSNippon Sharyo Manufacturing LLC | Rochelle | IL | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| PSPenn State Special Metals LLC | Koppel | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| PJPhillips & Johnston INC Dba River Rock Fabrication | Grand Rapids | MI | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| PEPlymouth Engineered Shapes | Hopkinsville | KY | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| PTPlymouth Tube Company | Eupora | MS | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| PTPlymouth Tube Company | Winamac | IN | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| PPPrimus Pipe and Tube INC | Wildwood | FL | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| RCRepublic Conduit INC. (pka Maverick C&p Inc.) | Cedar Springs | GA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| RMRoyal Metal Products, INC. | Temple | GA | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| STSalem Tube Mfg | Greenville | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| SASanoh America Archbold Facility | Archbold | OH | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| SSSeah Steel USA | Houston | TX | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
Skyline Steel LLC. - Geo Pomona | Pomona | CA | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| SCSoutheast Culvert INC. | Winder | GA | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| SFSystems Fab & Machine, INC. | El Dorado | AR | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| TTTapco Tube Co/meadville | Meadville | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| TTTarter Tube | Dunnville | KY | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |