| SOStephens Ornamental Iron | Marietta | GA | — | ◇ UNVERIFIED |
 Stephens Pipe & Steel, LLC. | Winder | GA | — | ◇ UNVERIFIED |
| SASterling Atm INC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| SBStetson Building Products, LLC. | Eldridge | IA | — | ◇ UNVERIFIED |
| SJSteve Johnson Companies | Wichita | KS | — | ◇ UNVERIFIED |
 Steward Machine CO. INC Plant 2 | Birmingham | AL | — | ◇ UNVERIFIED |
| SIStewart Industrial | Tell City | IN | — | ◇ UNVERIFIED |
| SFSt Fabrication | Orting | WA | — | ◇ UNVERIFIED |
| SRStones River Steel | Miboro | TN | — | ◇ UNVERIFIED |
| SSStratford Steel, LLC | Stratford | CT | — | ◇ UNVERIFIED |
| SCStrick Corporation | Abbeville | SC | — | ◇ UNVERIFIED |
 Strong Structural Steel, LTD | Pharr | TX | — | ◇ UNVERIFIED |
| SSStruc Steel INC | Spring Valley | CA | — | ◇ UNVERIFIED |
| SBStructall Building Systems, INC. | San Antonio | TX | — | ◇ UNVERIFIED |
| SCStructural Coatings, INC. | Clayton | NC | — | ◇ UNVERIFIED |
| SCStructural Coatings, INC. - Clayton | Clayton | NC | — | ◇ UNVERIFIED |
| SSStructural Steel Fabricators INC | Stanton | CA | — | ◇ UNVERIFIED |
| SSStructural Steel of Carolina - Hickory Steel | Hickory | NC | — | ◇ UNVERIFIED |
| SSStructural Steel Products Corporation | Clayton | NC | — | ◇ UNVERIFIED |
| SSStructural Steel Services Inc, Plant 3 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services, Inc., Plant 6 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services Inc, Plants 1 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services, Plant 1 | Meridian | MS | — | ◇ UNVERIFIED |
| SFStructure Fabricators | Evansville | IN | — | ◇ UNVERIFIED |
| SMStryker Metals LLC | Dayton | OH | — | ◇ UNVERIFIED |
| SStucke | Kent | WA | — | ◇ UNVERIFIED |
| SBStupp Bros INC | Richardsville | KY | — | ◇ UNVERIFIED |
| SSSuburban Steel Supply Company LLC | Gahanna | OH | — | ◇ UNVERIFIED |
| SSSukup Steel Structures LLC | Ambridge | PA | — | ◇ UNVERIFIED |
| SMSulta Manufacturing Company | Sulphur Springs | TX | — | ◇ UNVERIFIED |
| SCSulzer Chemtech Usa, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| SSSummit Steel Works CORP | San Jose | CA | — | ◇ UNVERIFIED |
| SUSummit Utility Structures, LLC | Allentown | PA | — | ◇ UNVERIFIED |
| SFSunburst Fabrications INC | Redmond | OR | — | ◇ UNVERIFIED |
| SHSun Hydraulics Parking Lot and Truck Well | Sarasota | FL | — | ◇ UNVERIFIED |
| SESunrise Erectors | Canton | MA | — | ◇ UNVERIFIED |
| SMSunshine Metals | Corona | CA | — | ◇ UNVERIFIED |
| SSSun Steel Company | University Park | IL | — | ◇ UNVERIFIED |
| SSunsteel,llc | Sunnyside | WA | — | ◇ UNVERIFIED |
| SDSuper Duty, INC. | Hot Springs | AR | — | ◇ UNVERIFIED |
| SASuperior Architecture Mfg INC | Bell Gardens | CA | — | ◇ UNVERIFIED |
| SFSuperior Fabrication INC. | Canadian | TX | — | ◇ UNVERIFIED |
| SMSuperior Mason Products LLC | Homewood | AL | — | ◇ UNVERIFIED |
| SMSuperior Mason Products LLC | Birmingham | AL | — | ◇ UNVERIFIED |
| SSSuperior Steel Connectors Inc | Bay Shore | NY | — | ◇ UNVERIFIED |
| SSSuperior Steel Connectors Inc | Ronkonkoma | NY | — | ◇ UNVERIFIED |
| SSSuperior Suppliers Network, LLC | Houghton | MI | — | ◇ UNVERIFIED |
 Superior Tank CO INC | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| SSSuper Steel LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| SSSuper Steel Products CORP | Milwaukee | WI | — | ◇ UNVERIFIED |
| SMSupreme Manufacutring, INC. | Stoneboro | PA | — | ◇ UNVERIFIED |
| SESwam Electric | Hanover | PA | — | ◇ UNVERIFIED |
| SFSweatshop Fabrication | Robstown | TX | — | ◇ UNVERIFIED |
| SASwift-cor Aerospace, INC. | Gardena | CA | — | ◇ UNVERIFIED |
| SSSwitchgear Solutions, INC. | Tucson | AZ | — | ◇ UNVERIFIED |
| SSSymons Steel Forms Div | New Braunfels | TX | — | ◇ UNVERIFIED |
| TITacoma Iron Work | Spanaway | WA | — | ◇ UNVERIFIED |
| T5Take 5, Inc. | Pacific Grove | CA | — | ◇ UNVERIFIED |
| TITalley Iron Works, LLC | Pearl River | LA | — | ◇ UNVERIFIED |
| TMTalley Metal Products | Hagerstown | MD | — | ◇ UNVERIFIED |
| TITallman Iron Works INC | Maryville | TN | — | ◇ UNVERIFIED |
| TMTalton's Metal Products, INC. | Fuquay Varina | NC | — | ◇ UNVERIFIED |
| TITamer Industries | Somerset | MA | — | ◇ UNVERIFIED |
| TATampa Amalgamated Steel | Tampa | FL | — | ◇ UNVERIFIED |
| TMTandem Metals, INC. | University Park | IL | — | ◇ UNVERIFIED |
| TCTank Connection | Galesburg | KS | — | ◇ UNVERIFIED |
| TMTaprite-fassco Mfg., INC. | San Antonio | TX | — | ◇ UNVERIFIED |
| TSTarrier Steel CO INC | Columbus | OH | — | ◇ UNVERIFIED |
| TITate INC | Saint Paul | VA | — | ◇ UNVERIFIED |
| TITate, INC. | Pocahontas | AR | — | ◇ UNVERIFIED |
| TITavco INC | Chatsworth | CA | — | ◇ UNVERIFIED |
| TFTaylor Forge Engineered Systems - Greeley | Garnett | KS | — | ◇ UNVERIFIED |
| TFTaylor Forge Engineered Systems - Paola | Paola | KS | — | ◇ UNVERIFIED |
| TITcb Industrial INC | Modesto | CA | — | ◇ UNVERIFIED |
| TCTdc Close-out Warehouse | Sun Valley | CA | — | ◇ UNVERIFIED |
| TMTeam MM LLC | Flint | MI | — | ◇ UNVERIFIED |
| TSTeam Steel Fabricators LLC | Youngstown | OH | — | ◇ UNVERIFIED |
| TITec-fab, Incorporated | Knoxville | TN | — | ◇ UNVERIFIED |
| TPTec-fab Parts, INC. | Tonganoxie | KS | — | ◇ UNVERIFIED |
| TITech-craft, INC. | Marietta | GA | — | ◇ UNVERIFIED |
| TETecno Engineering INC | Norwalk | CA | — | ◇ UNVERIFIED |
| TITemco Industries | Burgettstown | PA | — | ◇ UNVERIFIED |
| TATemple Architectural Products, LLC | Elyria | OH | — | ◇ UNVERIFIED |
| TSTempleton Steel Fab, INC | Paso Robles | CA | — | ◇ UNVERIFIED |
| TSTempleton Steel Fabrication | Paso Robles | CA | — | ◇ UNVERIFIED |
| TATencate Advanced Composites, I | Benicia | CA | — | ◇ UNVERIFIED |
| TITenex INC | Goodlettsville | TN | — | ◇ UNVERIFIED |
| TWTen Works LLC | Wichita | KS | — | ◇ UNVERIFIED |
| TUTerra Universal INC | Orange | CA | — | ◇ UNVERIFIED |
| TBTerri Bell Dba Alpine Metals | South Lake Tahoe | CA | — | ◇ UNVERIFIED |
| TCTescom CORP Div of Emerson Process Mgmt | Elk River | MN | — | ◇ UNVERIFIED |
| TCTexas Corrugators, INC. | Hutto | TX | — | ◇ UNVERIFIED |
| TSTexas Steel Fabricators INC. | Waller | TX | — | ◇ UNVERIFIED |
| TGT G Manufacturing, INC. | Hammonton | NJ | — | ◇ UNVERIFIED |
| TGT G Schmeiser Company INC | Fresno | CA | — | ◇ UNVERIFIED |
| TAThe Ady Family Revocable Living Trust | Turlock | CA | — | ◇ UNVERIFIED |
| TCThe Canam Steel Corporation | Lafayette | IN | — | ◇ UNVERIFIED |
| TDThe Deltak Company, INC. | Walker | LA | — | ◇ UNVERIFIED |
| TEThe Engraving CO INC. | Metairie | LA | — | ◇ UNVERIFIED |
| TGThe General Operating Co, LLC | Saint Paul | MN | — | ◇ UNVERIFIED |
