| SISmt Incorporated - Raleigh Plant | Raleigh | NC | — | ◇ UNVERIFIED |
| SASnappy Adp Div of Standex International | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| SISoelzer, INC Dba Firestone Fabricators | Signal Hill | CA | — | ◇ UNVERIFIED |
| STSolar Turbines Turbofab Facility | Channelview | TX | — | ◇ UNVERIFIED |
| SCSolomon Corporation - Flandreau | Flandreau | SD | — | ◇ UNVERIFIED |
| SPSouriau Paande Sequim | Sequim | WA | — | ◇ UNVERIFIED |
| SASousa and Demayo INC | North Attleboro | MA | — | ◇ UNVERIFIED |
| SSSouthbridge Sheet Metal | Southbridge | MA | — | ◇ UNVERIFIED |
| SMSoutheastern Metals | Jacksonville | FL | — | ◇ UNVERIFIED |
| SSSoutheastern Stud & Components, INC. | Montgomery | AL | — | ◇ UNVERIFIED |
| STSoutheastern Tool & Die | Aberdeen | NC | — | ◇ UNVERIFIED |
| SFSoutheast Fabricators, INC. | Cottondale | AL | — | ◇ UNVERIFIED |
| SMSouthern Metal Processing Company | Oxford | AL | — | ◇ UNVERIFIED |
| SMSouthern Metals Company of Mississippi INC | Laurel | MS | — | ◇ UNVERIFIED |
| SMSouthern Miscellaneous Columbia LLC | West Columbia | SC | — | ◇ UNVERIFIED |
| SPSouthern Post Texas | San Marcos | TX | — | ◇ UNVERIFIED |
| SSSouthern Steel Comapny Limited Liability Company | Charlotte | NC | — | ◇ UNVERIFIED |
| SSSouthern Structural Steel Incorporated | Smithfield | VA | — | ◇ UNVERIFIED |
| SSSouthern Structural Steel of Fl, INC | Saint Petersburg | FL | — | ◇ UNVERIFIED |
| SPSouthland Pipe CORP. | Rialto | CA | — | ◇ UNVERIFIED |
| SSSouth Sligo Compressor Station | Sligo | LA | — | ◇ UNVERIFIED |
| SVSouth Valley Mfg | Springfield | MO | — | ◇ UNVERIFIED |
| SHSouthwestern Hollow Metal | Raton | NM | — | ◇ UNVERIFIED |
| SSSouthwest Stair INC | El Mirage | AZ | — | ◇ UNVERIFIED |
| SMSpartech Marine Industries Florida | Rockledge | FL | — | ◇ UNVERIFIED |
| SFSpecial Fab & Machine, INC. | Lexington | NC | — | ◇ UNVERIFIED |
| SPSpecial Products Energy | Canton | MA | — | ◇ UNVERIFIED |
| SMSpecialties Mfg Co-brecon Ind Pk | Talladega | AL | — | ◇ UNVERIFIED |
| SMSpecialty Manufacturing | Amesbury | MA | — | ◇ UNVERIFIED |
| SSSpecialty Steel Services Facility | Philadelphia | PA | — | ◇ UNVERIFIED |
| SASpectrum Aquatics | Missoula | MT | — | ◇ UNVERIFIED |
| SMSpill-stop Mfg. LLC | Melrose Park | IL | — | ◇ UNVERIFIED |
| SSSpraying System CO | Wheaton | IL | — | ◇ UNVERIFIED |
| SSSpraying Systems CO | Merrimack | NH | — | ◇ UNVERIFIED |
| SSS & S Metal Fabricators | Chamois | MO | — | ◇ UNVERIFIED |
| SCSst Custom Fabricators | Okeechobee | FL | — | ◇ UNVERIFIED |
| SPStack-on Products | Wauconda | IL | — | ◇ UNVERIFIED |
| SGStandard Golf CO | Cedar Falls | IA | — | ◇ UNVERIFIED |
| SSStandard Steel Fabricating CO INC | Seattle | WA | — | ◇ UNVERIFIED |
 Steele Solutions INC | South Milwaukee | WI | — | ◇ UNVERIFIED |
| SFSteel Fab Enterprises Ss Fisher Landfill | Lancaster | PA | — | ◇ UNVERIFIED |
 Steelfab, INC. | York | SC | — | ◇ UNVERIFIED |
| Steelfab, INC. - Texas Division | Durant | OK | — | ◇ UNVERIFIED |
| SOSteelfab of Fayetteville | Fayetteville | NC | — | ◇ UNVERIFIED |
| SOSteelfab Oregon, INC. | Spokane | WA | — | ◇ UNVERIFIED |
| SFSteel Fabricators INC. | Lincoln | NE | — | ◇ UNVERIFIED |
| SFSteel Fabricators, INC. | Fort Collins | CO | — | ◇ UNVERIFIED |
| SFSteel Fabricators L.l.c. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| Steelfab West, INC. | Tangent | OR | — | ◇ UNVERIFIED |
| SPSteel Painters INC | Kelso | WA | — | ◇ UNVERIFIED |
| SPSteel Pipe Fabricators, LLC | Norcross | GA | — | ◇ UNVERIFIED |
| STSteel Technologies CORP | Jersey City | NJ | — | ◇ UNVERIFIED |
| SPSteeltec Products | Cleveland | OH | — | ◇ UNVERIFIED |
| SVSteel Ventures INC | Wurtland | KY | — | ◇ UNVERIFIED |
| SWSteel Warehouse of Ohio | Warren | OH | — | ◇ UNVERIFIED |
| SMStephens Metal Products | Yakima | WA | — | ◇ UNVERIFIED |
| SDSteris Distribution Center | Mentor | OH | — | ◇ UNVERIFIED |
| SCSterling Custom Sheet Metal | Magnolia | TX | — | ◇ UNVERIFIED |
| SMSteward Machine CO. | Bainbridge | GA | — | ◇ UNVERIFIED |
| SSStiman Steel | Augusta | ME | — | ◇ UNVERIFIED |
| SIStoll Industries, INC. | Abbeville | SC | — | ◇ UNVERIFIED |
| SCStrick Corporation | Abbeville | SC | — | ◇ UNVERIFIED |
| SAStrickland Agriculture Services Incorporated | Spring Hope | NC | — | ◇ UNVERIFIED |
| SOStripmasters of Illinois | Granite City | IL | — | ◇ UNVERIFIED |
| SSStruc Steel INC | Spring Valley | CA | — | ◇ UNVERIFIED |
| SSStructural Standards INC | Sparta | MI | — | ◇ UNVERIFIED |
| SSStructural Steel of Carolina | Hickory | NC | — | ◇ UNVERIFIED |
| SSStructural Steel Services INC Plant 2 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services Inc, Plant 3 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services, Plant 1 | Meridian | MS | — | ◇ UNVERIFIED |
| SSSts Steel INC | Schenectady | NY | — | ◇ UNVERIFIED |
| SWStud Welding, INC. | Centerville | TN | — | ◇ UNVERIFIED |
| SLSturdy Lantern Manufacturing | Franklin | MA | — | ◇ UNVERIFIED |
| SSSuburban Steel Supply Company LLC | Gahanna | OH | — | ◇ UNVERIFIED |
| SWSunshine Welding, Scallop | Port Canaveral | FL | — | ◇ UNVERIFIED |
| SDSuperior Derrick Services LLC | New Iberia | LA | — | ◇ UNVERIFIED |
| SSSuperior Spindle Service LLC | Taylor | MI | — | ◇ UNVERIFIED |
| SSSuper Steel LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| SSSuper Steel Products CORP | Milwaukee | WI | — | ◇ UNVERIFIED |
| SCSupreme Cores, Incorporated | Milwaukee | WI | — | ◇ UNVERIFIED |
| SLSwarovski Lighting LTD | Plattsburgh | NY | — | ◇ UNVERIFIED |
| SPSycamore Precision Machine INC | Genoa | IL | — | ◇ UNVERIFIED |
| SMSyltone Marine INC | Gulfport | MS | — | ◇ UNVERIFIED |
| SCSymons CORP | Des Plaines | IL | — | ◇ UNVERIFIED |
| SSSymons Steel Forms Div | New Braunfels | TX | — | ◇ UNVERIFIED |
| SMSynventive Molding Solutions | Peabody | MA | — | ◇ UNVERIFIED |
| TGTait Global LLC | Lititz | PA | — | ◇ UNVERIFIED |
| TMTalley Metal Products | Hagerstown | MD | — | ◇ UNVERIFIED |
| TITamer Industries | Somerset | MA | — | ◇ UNVERIFIED |
| TATampa Amalgamated Steel | Tampa | FL | — | ◇ UNVERIFIED |
| TCTank Connection | Galesburg | KS | — | ◇ UNVERIFIED |
| TITate, INC. | Pocahontas | AR | — | ◇ UNVERIFIED |
| TFTaylor Forge Engineered Systems - Greeley | Garnett | KS | — | ◇ UNVERIFIED |
| TFTaylor Forge Engineered Systems - Paola | Paola | KS | — | ◇ UNVERIFIED |
| TFTeam Fabricators Metal Fabrication | Port Arthur | TX | — | ◇ UNVERIFIED |
| TITenere INC Wheat Ridge Div.cn | Wheat Ridge | CO | — | ◇ UNVERIFIED |
| TATennessee Awning Mfg CO | Hendersonville | TN | — | ◇ UNVERIFIED |
| TDTennessee Dept. of Trans. (closed) | Nashville | TN | — | ◇ UNVERIFIED |
| TSTesla Service Center | Pensacola | FL | — | ◇ UNVERIFIED |
| TMTexas Miscellaneous Iron | Oakwood | TX | — | ◇ UNVERIFIED |
