| SCSterling Casting | Bluffton | IN | — | ◇ UNVERIFIED |
| SFSterling Foods | Azusa | CA | — | ◇ UNVERIFIED |
| SIStillwell, Inc. | Cleburne | TX | — | ◇ UNVERIFIED |
| SAStratus Auto Equipment, Inc. | College Station | TX | — | ◇ UNVERIFIED |
| STStreuter Technologies INC | San Clemente | CA | — | ◇ UNVERIFIED |
| SFSturgis Foundry Corporation | Sturgis | MI | — | ◇ UNVERIFIED |
| SFSugar Foods Corporation | Union City | CA | — | ◇ UNVERIFIED |
| SISulvan Industrial Piping | Perth Amboy | NJ | — | ◇ UNVERIFIED |
| SASun America Converting LLC | Alliance | OH | — | ◇ UNVERIFIED |
| SBSuperior Bearing CO INC | Commerce | CA | — | ◇ UNVERIFIED |
| SDSuperior Drillpipe Manufacturing | Houston | TX | — | ◇ UNVERIFIED |
| STSuperior Tube Products, INC. | Davenport | IA | — | ◇ UNVERIFIED |
| SMSupervac Manuf. | Broomfield | CO | — | ◇ UNVERIFIED |
| SNSupply Network INC Dba Viking Supplynet & Fabrication Services | Hayward | CA | — | ◇ UNVERIFIED |
| SNSupply Network INC Dba Viking Supplynet & Fabrication Services | Santa Fe Spgs | CA | — | ◇ UNVERIFIED |
| SCSynehi Casting | Greenwood | SC | — | ◇ UNVERIFIED |
| TETab Enterprises | Bethel Island | CA | — | ◇ UNVERIFIED |
| TIT.a. Industries INC | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| TCTalladega Castings & Machine CO INC | Talladega | AL | — | ◇ UNVERIFIED |
| TPTampa Pipe & Welding, INC. | Galveston | TX | — | ◇ UNVERIFIED |
| TATasco Amarillo Texas | Amarillo | TX | — | ◇ UNVERIFIED |
| TRTassy Real Estate, LLC | Dundee | IL | — | ◇ UNVERIFIED |
| TITbc INC | Green Bay | WI | — | ◇ UNVERIFIED |
| TFT&b Foundry Company | Cleveland | OH | — | ◇ UNVERIFIED |
| TCTejas Casing | Houston | TX | — | ◇ UNVERIFIED |
| TTTejas Tubular Products | Houston | TX | — | ◇ UNVERIFIED |
| TATeknor Apex CO. | Pawtucket | RI | — | ◇ UNVERIFIED |
| TPTem Performance Machine Shop | Cotati | CA | — | ◇ UNVERIFIED |
| TFTenaris Freeport | Freeport | TX | — | ◇ UNVERIFIED |
| TPTetra Pak Cheese and Powder Systems INC | Winsted | MN | — | ◇ UNVERIFIED |
| TPTetra Pak Processing Equipment INC | Champlin | MN | — | ◇ UNVERIFIED |
| TPTetra Pak Processing Equipment INC | Windsor | WI | — | ◇ UNVERIFIED |
| TATexas Arai | Houston | TX | — | ◇ UNVERIFIED |
| TFTexas Foundaries | Lufkin | TX | — | ◇ UNVERIFIED |
| TOTexas Outdoor Cookers, LLC | Willow City | TX | — | ◇ UNVERIFIED |
| TSTexas Steel Conversion INC | Houston | TX | — | ◇ UNVERIFIED |
| TBThe Blanchester Foundry CO | Blanchester | OH | — | ◇ UNVERIFIED |
| TCThe Charles J. Angelo Manufacturing Group, LLC | Manchester | CT | — | ◇ UNVERIFIED |
| TCThe Chemicolloid Laboratories, INC. | Hauppauge | NY | — | ◇ UNVERIFIED |
| TFThe Ford Meter Box Company, INC. (dowzer) | Pell City | AL | — | ◇ UNVERIFIED |
| TFThe Foundry INC | Mead | WA | — | ◇ UNVERIFIED |
| TGThe General Casting Company - Toledo Street | Delaware | OH | — | ◇ UNVERIFIED |
| THThe Henry Group, Inc. | Greenville | TX | — | ◇ UNVERIFIED |
| TPThe Philpott Corporation | Paramount | CA | — | ◇ UNVERIFIED |
 Thermal Pipe Systems, INC. | Durant | OK | — | ◇ UNVERIFIED |
| TSThe Shredder Company | Canutillo | TX | — | ◇ UNVERIFIED |
| TTThe Tapco Tube Company | Kansas City | MO | — | ◇ UNVERIFIED |
| TTThe Troxel Company | Moscow | TN | — | ◇ UNVERIFIED |
| TGThomas G. Gallagher, INC. | Andover | MA | — | ◇ UNVERIFIED |
| TPThomas Precision Machining INC | Monroe | LA | — | ◇ UNVERIFIED |
| TPThreaded Products CO | Richmond | MI | — | ◇ UNVERIFIED |
| TPThreaded Products CO | Richmond | MI | — | ◇ UNVERIFIED |
| TAThreading and Precision Manufacturing, LLC | Houston | TX | — | ◇ UNVERIFIED |
| TBThunder Bay Foundry | Alpena | MI | — | ◇ UNVERIFIED |
| TATi Automotive | Cartersville | GA | — | ◇ UNVERIFIED |
| TATi Automotive Systems, LLC | Cartersville | GA | — | ◇ UNVERIFIED |
| TSTidewater Scale Sales & Service, Inc. | Dundalk | MD | — | ◇ UNVERIFIED |
| TSTk Simplex Div Actuant CORP | Broadview | IL | — | ◇ UNVERIFIED |
| T4Tmb 440ae, INC. | Elgin | IL | — | ◇ UNVERIFIED |
| TITmk Ipsco | Catoosa | OK | — | ◇ UNVERIFIED |
| TFTomahawk Foundary, INC | Rice Lake | WI | — | ◇ UNVERIFIED |
| TMTomasco Mulciber INC | Columbus | OH | — | ◇ UNVERIFIED |
| TKTool King INC | Wheeling | IL | — | ◇ UNVERIFIED |
| THTorr Holdings, LLC | Redding | CA | — | ◇ UNVERIFIED |
| TMTortilla Masters Equipment, LLC | Katy | TX | — | ◇ UNVERIFIED |
| TRToyota Research Institute | Los Altos | CA | — | ◇ UNVERIFIED |
| TCTrade Construction Company, LLC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| TMTrade Mark Coffee CORP | Burlingame | CA | — | ◇ UNVERIFIED |
| TPTransfer Press Exchange INC | Vinemont | AL | — | ◇ UNVERIFIED |
 Travis Pattern Foundry | Spokane Valley | WA | — | ◇ UNVERIFIED |
| TITree Island Steel Dba Tree Island Wire USA INC | San Bernardino | CA | — | ◇ UNVERIFIED |
| TNTrees N Trends INC | Paducah | KY | — | ◇ UNVERIFIED |
| TPTrenton Pipe Nipple Company, LLC | Federalsburg | MD | — | ◇ UNVERIFIED |
| TCTri C Machine Nor-cal INC | Auburn | CA | — | ◇ UNVERIFIED |
| TCTri County Tube INC | Clinton | TN | — | ◇ UNVERIFIED |
| TFTrident Fire & Fabrication, LLC | Carlstadt | NJ | — | ◇ UNVERIFIED |
| TITrinity Inds INC Fitting Grp | Russellville | AR | — | ◇ UNVERIFIED |
| TVTri-Star Vending LLC | Knoxville | TN | — | ◇ UNVERIFIED |
| TITri-State Industries of Tulsa LLC | Tulsa | OK | — | ◇ UNVERIFIED |
| TTTrojan Tube Sales and Fabrications INC. | Muncy | PA | — | ◇ UNVERIFIED |
| TRT. Rowe Pipe, LLC | Ponca City | OK | — | ◇ UNVERIFIED |
| TFTroy Foundry (screening Plant) | Adger | AL | — | ◇ UNVERIFIED |
| TITrucent INC | Dexter | MI | — | ◇ UNVERIFIED |
 Truenorth Steel INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| TTTrue Tube INC | Paso Robles | CA | — | ◇ UNVERIFIED |
| TATruNorth Automation, LLC | White Bear Township | MN | — | ◇ UNVERIFIED |
| TPTsan Properties LLC | Los Angeles | CA | — | ◇ 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 |
| TITurner Industries | Pasadena | TX | — | ◇ UNVERIFIED |
| TITurner Industries Group Paris Plant | Paris | TX | — | ◇ UNVERIFIED |
