| JCJefferson City | Jefferson City | MO | Chemical Manufacturing325611 | 500+ | ◐ LIKELY ACTIVE |
| JPJindal Pipe USA Inc | Baytown | TX | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| JTJindal Tubular USA llc | BayStlouis | MS | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| JMJ&L Manufacturing | Marshall | MI | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| JSJm Steel, Pa | Leetsdale | PA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| KFKeener Farm One, LLC | Connersville | IN | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| KWKey West Welding and Fabrication, INC. | Key West | FL | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| KDKinedyne DBA ELT | Orchard Park | NY | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| LJLock Joint Tube Texas | Temple | TX | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| LPLonghorn Plant | Fort Worth | TX | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| MMain | Birmingham | AL | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| MPMain Plant | Clifton | NJ | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| MMaryville | Maryville | MO | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| MTMechanical Technologies LLC | Walterboro | SC | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| MLMetal-Matic, LLC Middletown Plant | Middletown | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| MLMetal-Matic, LLC Minneapolis Plant | Minneapolis | MN | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
Meyer Utility Structures | Hager City | WI | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| MPMid-America Pipe | Scammon | KS | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| MTMidwest Tube Fabricators INC | Sterling Heights | MI | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| MMoberly | Moberly | MO | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| MMModern Manufacturing International | Wausau | WI | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| MMonmouth | Monmouth | IL | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| NZNiles Zekelman Industries | Niles | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| NTNova Tube & Steel, LLC | Delta | OH | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| NSNucor Skyline Steel LLC | Rock Hil | SC | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| NTNWPX Tracy | Tracy | CA | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| OLOci LLC | Brookville | PA | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| OOOdm Operations LLC | Lafayette | LA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| OSOKC - Southwest Tube | Sand Springs | OK | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| OSOKC - Star Center Tube | Sand Springs | OK | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| PAPermalok A Northwest Pipe Company | St. Louis, | MO | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| PApipe and steel industrial fabricators | Denham Springs | LA | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| PTPlymouth Tube Company - Warrenville | Warrenville | IL | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| PCPowerbrace Corporation | Kenosha | WI | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| PDPremier Drill Products LLC. | Houston | TX | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| PSPresby Steel, LLC | Berlin | NH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| PMPrimary Metals International LLC | Cape Coral | FL | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| PLPTC Liberty Tubulars LLC - Liberty Plant | Liberty | TX | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| PTPTC Tubular Products LLC Richmond Plant | Richmond | IN | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| PMP.t.i. Machine, Incorporated | Delta | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| RCRbm Customz LLC | Crown City | OH | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| RMRepublic Marketing INC. | Lincoln Park | MI | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| STSoutheast Tubular Products, Inc. | Statesville | NC | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| SNSouthern New Jersey Steel Co. Inc. | Vineland | NJ | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| SKSwagelok Koppel | Koppel | PA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| SESynchronized Enterprises, INC. | Puyallup | WA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| SMSynergy Manufacturing Inc. | San Luis Obispo | CA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| TFTaylor Forge Engineered Systems Greeley | Greeley | KS | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| TTTexas Tubulars Products | Lonestar | TX | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| TTTexas Tubulars Products | Lone Star | TX | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |