| SUStoredot US INC | Irvine | CA | — | ◇ UNVERIFIED |
| SUStoredot US INC | Irvine | CA | — | ◇ UNVERIFIED |
| SISulvan Industrial Piping | Perth Amboy | NJ | — | ◇ UNVERIFIED |
| SBSuperior Battery Service, LLC | Farmers Branch | TX | — | ◇ UNVERIFIED |
| SDSuperior Drillpipe Manufacturing | Houston | TX | — | ◇ UNVERIFIED |
| SMSuperior Metalworks LLC | Titusville | FL | — | ◇ UNVERIFIED |
| SMSuperior Metalworks LLC | Titusville | FL | — | ◇ UNVERIFIED |
| STSuperior Tube Products, INC. | Davenport | IA | — | ◇ UNVERIFIED |
| SNSupply Network INC Dba Viking Supplynet & Fabrication Services | Santa Fe Spgs | CA | — | ◇ UNVERIFIED |
| SNSupply Network INC Dba Viking Supplynet & Fabrication Services | Hayward | CA | — | ◇ UNVERIFIED |
| SASupra Alloys, LLC | Camarillo | CA | — | ◇ UNVERIFIED |
| TPTampa Pipe & Welding, INC. | Galveston | TX | — | ◇ UNVERIFIED |
| TITbc INC | Green Bay | WI | — | ◇ UNVERIFIED |
| TSTce Systems INC | Charlotte | MI | — | ◇ UNVERIFIED |
| TRT.c. Recycling LLC | Hurricane | UT | — | ◇ UNVERIFIED |
| TCTejas Casing | Houston | TX | — | ◇ UNVERIFIED |
| TTTejas Tubular Products | Houston | TX | — | ◇ UNVERIFIED |
| TFTenaris Freeport | Freeport | TX | — | ◇ UNVERIFIED |
| TLTenvera LLC | Franklin | TN | — | ◇ UNVERIFIED |
| TITesla INC | Lathrop | CA | — | ◇ UNVERIFIED |
| TATexas Arai | Houston | TX | — | ◇ UNVERIFIED |
| TSTexas Steel Conversion INC | Houston | TX | — | ◇ UNVERIFIED |
| TEThe Esab Group INC | Union | SC | — | ◇ UNVERIFIED |
| TFThe Ford Meter Box Company, INC. (dowzer) | Pell City | AL | — | ◇ UNVERIFIED |
| TOThe Okonite Company | Santa Maria | CA | — | ◇ UNVERIFIED |
| TEThermal Expansion Solutions, INC | Syracuse | NY | — | ◇ UNVERIFIED |
 Thermal Pipe Systems, INC. | Durant | OK | — | ◇ UNVERIFIED |
| TTThe Tapco Tube Company | Kansas City | MO | — | ◇ UNVERIFIED |
| TTThe Troxel Company | Moscow | TN | — | ◇ UNVERIFIED |
| TPThistle Processing LLC | Huntington | WV | — | ◇ UNVERIFIED |
| TGThomas G. Gallagher, INC. | Andover | MA | — | ◇ UNVERIFIED |
| TAThreading and Precision Manufacturing, LLC | Houston | TX | — | ◇ UNVERIFIED |
| TATi Automotive | Cartersville | GA | — | ◇ UNVERIFIED |
| TATi Automotive Systems, LLC | Cartersville | GA | — | ◇ UNVERIFIED |
| TCTimminco Corporation (was Dow Chemical) | Aurora | CO | — | ◇ UNVERIFIED |
| TTTim Thompson Salvage LLC | Albert Lea | MN | — | ◇ UNVERIFIED |
| TMTitanium Metals CORP | East Windsor | CT | — | ◇ UNVERIFIED |
| TMTitanium Metals Corporation | Exton | PA | — | ◇ UNVERIFIED |
| TMTitanium Metals Corporation | Millwood | WV | — | ◇ UNVERIFIED |
| T4Tmb 440ae, INC. | Elgin | IL | — | ◇ UNVERIFIED |
| TITmk Ipsco | Catoosa | OK | — | ◇ UNVERIFIED |
| TLTodd Levenson | Redondo Beach | CA | — | ◇ UNVERIFIED |
| TSTonal Systems INC | San Francisco | CA | — | ◇ UNVERIFIED |
| TSTorrey S Crane | Plantsville | CT | — | ◇ UNVERIFIED |
| TCTrade Construction Company, LLC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| TNTremont Nail Factory Site | Wareham | MA | — | ◇ UNVERIFIED |
| TPTrenton Pipe Nipple Company, LLC | Federalsburg | MD | — | ◇ UNVERIFIED |
| TTTrick Titanium | Holt | MI | — | ◇ UNVERIFIED |
| TCTri County Tube INC | Clinton | TN | — | ◇ UNVERIFIED |
| TFTrident Fire & Fabrication, LLC | Carlstadt | NJ | — | ◇ UNVERIFIED |
| TITrinity Inds INC Fitting Grp | Russellville | AR | — | ◇ UNVERIFIED |
| TITri-State Industries of Tulsa LLC | Tulsa | OK | — | ◇ UNVERIFIED |
| TNTriumph Northwest | Albany | OR | — | ◇ UNVERIFIED |
| TTTrojan Technologies | City of Industry | CA | — | ◇ UNVERIFIED |
| TTTrojan Tube Sales and Fabrications INC. | Muncy | PA | — | ◇ UNVERIFIED |
| TRT. Rowe Pipe, LLC | Ponca City | OK | — | ◇ UNVERIFIED |
 Truenorth Steel INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| TFTube Fab Roman Engineering CO INC | Afton | MI | — | ◇ UNVERIFIED |
| TFTube Forgings of America INC | Portland | OR | — | ◇ UNVERIFIED |
 Tube Processing Corporation | Southport | IN | — | ◇ UNVERIFIED |
| TPTube Products Corporation | Burnsville | MN | — | ◇ UNVERIFIED |
| TITubes, INC | Geismar | LA | — | ◇ UNVERIFIED |
| TSTube Solutions | Costa Mesa | CA | — | ◇ UNVERIFIED |
| TMTubesource Manufacturing INC | Ferndale | MI | — | ◇ UNVERIFIED |
| TSTube Specialties Co., INC. | Statesville | NC | — | ◇ UNVERIFIED |
| TCTubodyne CO | East Providence | RI | — | ◇ UNVERIFIED |
| TSTubular Solutions | Houston | TX | — | ◇ UNVERIFIED |
| TSTubular Solutions INC | Portland | OR | — | ◇ UNVERIFIED |
| TETungsten Eagle Upgrades INC | Manassas | VA | — | ◇ UNVERIFIED |
| TITurner Industries | Pasadena | TX | — | ◇ UNVERIFIED |
| TITurner Industries Group Paris Plant | Paris | TX | — | ◇ UNVERIFIED |
| TBTwo Brothers Scrap Metal | Farmingdale | NY | — | ◇ UNVERIFIED |
| UPUlrich Process Piping, LLC | Greensboro | NC | — | ◇ UNVERIFIED |
| UCUltium Cells LLC | Lansing | MI | — | ◇ UNVERIFIED |
| UEUltra Energy Group | Woodridge | IL | — | ◇ UNVERIFIED |
| UMUltra-met Mfg. CO. | Urbana | OH | — | ◇ UNVERIFIED |
| UPUltra Premium Oilfield Services | Odessa | TX | — | ◇ UNVERIFIED |
| UPUnderground Products, Inc. | Houston | TX | — | ◇ UNVERIFIED |
| UIUnigrid INC | San Diego | CA | — | ◇ UNVERIFIED |
| UCUnited Casing Tubular Services | Midland | TX | — | ◇ UNVERIFIED |
| UCUnited Casing Tubular Services Sheldon Road | Houston | TX | — | ◇ UNVERIFIED |
| USUnited Sprinkler INC | Rush City | MN | — | ◇ UNVERIFIED |
| USUnited States Pipe and Foundry Company LLC | Rogers | MN | — | ◇ UNVERIFIED |
| USUnited States Pipe and Foundry Company, LLC | — | IL | — | ◇ UNVERIFIED |
| UTUnited Tube Bending | Montclair | CA | — | ◇ UNVERIFIED |
| UMUniversal Molding Company | Lynwood | CA | — | ◇ UNVERIFIED |
| UMUniversal Molding Extrusion CO | Downey | CA | — | ◇ UNVERIFIED |
| UOUsdol Osha | Cleveland | TX | — | ◇ UNVERIFIED |
| ULUse Lawrence South | Lawrence | KS | — | ◇ UNVERIFIED |
| UPU.s. Pipe | San Antonio | TX | — | ◇ UNVERIFIED |
| UPUS Pipe | Union City | CA | — | ◇ UNVERIFIED |
| UPUS Pipe and Fabrication | Marysville | CA | — | ◇ UNVERIFIED |
| UPU.s. Pipe Fabrication | San Antonio | TX | — | ◇ UNVERIFIED |
| UPUS Pipe Fabrication | Fontana | CA | — | ◇ UNVERIFIED |
| USU S Steel Oilwell Services Wheeling Machine Produc | Houston | TX | — | ◇ UNVERIFIED |
| VTVallourec Tube Alloy | Houston | TX | — | ◇ UNVERIFIED |
| VTVallourec Tube Alloy | Houston | TX | — | ◇ UNVERIFIED |
| VOValutek Outsourcing LLC | Grapevine | TX | — | ◇ UNVERIFIED |
| VUVam USA Miller Rd | Houston | TX | — | ◇ UNVERIFIED |
| VPVan Pelt Industries, LLC | Grand Haven | MI | — | ◇ UNVERIFIED |
