 Rti Remmele Engineering INC | New Brighton | MN | — | ◇ UNVERIFIED |
| RMRt Manufacturing, INC. | Escanaba | MI | — | ◇ UNVERIFIED |
| RWRt Welding INC | Bayfield | CO | — | ◇ UNVERIFIED |
| RSRule Steel | Caldwell | ID | — | ◇ UNVERIFIED |
| RIRusselloy Iron Foundry, LLC | Coralville | IA | — | ◇ UNVERIFIED |
| RSRussellville Steel Company, INC. | Russellville | AR | — | ◇ UNVERIFIED |
| RIRxl INC | Madera | CA | — | ◇ UNVERIFIED |
| RLRyan Lonergan | Claremont | NH | — | ◇ UNVERIFIED |
| SSSabel Steel Service, INC. | Theodore | AL | — | ◇ UNVERIFIED |
| SCSabema CORP | Harbor City | CA | — | ◇ UNVERIFIED |
 Sabre Communications CORP | Fort Worth | TX | — | ◇ UNVERIFIED |
| SSabre-fwt | Fort Worth | TX | — | ◇ UNVERIFIED |
| SISabre Industries | Lakeside | CA | — | ◇ UNVERIFIED |
| SISabre Industries, INC. | Ellwood City | PA | — | ◇ UNVERIFIED |
| SISabre Industries - Sabre Fwt | Sioux City | IA | — | ◇ UNVERIFIED |
| SMSabre Machining INC | West Monroe | LA | — | ◇ UNVERIFIED |
| STSabre Towers and Poles, INC. | Blaine | KS | — | ◇ UNVERIFIED |
| SRSacramento Rebar, INC | Sacramento | CA | — | ◇ UNVERIFIED |
| SHSafe Harbor Access Systems Ii LLC | Quinby | SC | — | ◇ UNVERIFIED |
| SASafer Automatic Wheel Chair Locks LLC INC | Monroe | LA | — | ◇ UNVERIFIED |
| SWSafe Way Steel , INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| SHS.a. Halac Iron Works, Incorporated | Sterling | VA | — | ◇ UNVERIFIED |
| SCSalas Custom Metal INC | Albuquerque | NM | — | ◇ UNVERIFIED |
| SAS & A Trombley Corporation | Morrisville | VT | — | ◇ UNVERIFIED |
| SISamuel-whittar INC | Detroit | MI | — | ◇ UNVERIFIED |
| SMSanco Metal Fabricators, LLC | Lubbock | TX | — | ◇ UNVERIFIED |
| SHSandness Holdings LLC | Waller | TX | — | ◇ UNVERIFIED |
| SISanford Industrial Contractors INC. | Farmington | NY | — | ◇ UNVERIFIED |
| SSSanford Steel Corporation | Goldston | NC | — | ◇ UNVERIFIED |
| SSSanitary Stainless Welding INC | Fresno | CA | — | ◇ UNVERIFIED |
| SGSauer Group, INC. | Oak Hill | FL | — | ◇ UNVERIFIED |
| SISaulsbury Industries INC | Clackamas | OR | — | ◇ UNVERIFIED |
| SMSause Marine Services INC | Molalla | OR | — | ◇ UNVERIFIED |
| SWSawtooth Welding & Fabrication, LLC | Nampa | ID | — | ◇ UNVERIFIED |
| SCSb Carroll, INC. | Bloomingdale | OH | — | ◇ UNVERIFIED |
| SBS & B Machine Company, INC | Mobile | AL | — | ◇ UNVERIFIED |
| SISchletter INC | Shelby | NC | — | ◇ UNVERIFIED |
| Schlosser Forge Company Rancho Plant #2 | Fontana | CA | — | ◇ UNVERIFIED |
| SBSchneider Brothers Corporation | North Syracuse | NY | — | ◇ UNVERIFIED |
 Schuff Steel | Cupertino | CA | — | ◇ UNVERIFIED |
| Schuff Steel - Atlantic, INC. | Orlando | FL | — | ◇ UNVERIFIED |
| Schuff Steel Company | Aliso Viejo | CA | — | ◇ UNVERIFIED |
| Schuff Steel-gulf Coast Airline Drive Facility | Houston | TX | — | ◇ UNVERIFIED |
| SBSchulte Building Systems | Effingham | IL | — | ◇ UNVERIFIED |
| SSSchultz & Sons Salvage INC | Denton | MD | — | ◇ UNVERIFIED |
| SPSc Products, INC. | Eldorado | IL | — | ◇ UNVERIFIED |
| SCScrew Conveyor Pacific CORP | Visalia | CA | — | ◇ UNVERIFIED |
| SMScully's Metal Fabrication, INC. | Morgan City | LA | — | ◇ UNVERIFIED |
| SSScw Scrape Certify Welding | Fallbrook | CA | — | ◇ UNVERIFIED |
| SDS. Diamond Steel INC. | Iowa City | IA | — | ◇ UNVERIFIED |
