| AAll-star | Tulsa | OK | — | ◇ UNVERIFIED |
| ASAll Steel Carports Incorporated | Muncie | IN | — | ◇ UNVERIFIED |
| AIAlply Insulated Panels, LLC | Litchfield | IL | — | ◇ UNVERIFIED |
| APAluminum Professional Services LLC | Brusly | LA | — | ◇ UNVERIFIED |
| ASAluminum Specialties Manufacturing, INC. | Baton Rouge | LA | — | ◇ UNVERIFIED |
| ABAmerican Building Company | Liberty | NC | — | ◇ UNVERIFIED |
| ACAmerican Carports, INC | Colusa | CA | — | ◇ UNVERIFIED |
| ALAmerican Laser Fabrication Inc. | Oceanside | CA | — | ◇ UNVERIFIED |
| AMAmos Miller | Middlefield | OH | — | ◇ UNVERIFIED |
| AAAmtex Acquisition CORP. | Garland | TX | — | ◇ UNVERIFIED |
| AIAmtex-nms, INC. | Leesburg | FL | — | ◇ UNVERIFIED |
| AIAnvil INC | Hilo | HI | — | ◇ UNVERIFIED |
| AMAqua Marine Enterprises, INC. | Hartselle | AL | — | ◇ UNVERIFIED |
| AGArcadia GlassHouse LLC | Madison | OH | — | ◇ UNVERIFIED |
| AGArchitectural Grills & Sunshades INC | Frankfort | IL | — | ◇ UNVERIFIED |
| ACArmag CORP | Bardstown | KY | — | ◇ UNVERIFIED |
| ASArmstrong Steel Corporation | Englewood | CO | — | ◇ UNVERIFIED |
| ARA & R Portable | Marion | LA | — | ◇ UNVERIFIED |
| ASArrow Shed LLC | Haskell | NJ | — | ◇ UNVERIFIED |
| ASArrow Structures LLC | Stanley | WI | — | ◇ UNVERIFIED |
| AUArrows Up, LLC | Arlington Heights | IL | — | ◇ UNVERIFIED |
| AMArtis Metals Co., INC. | Boise | ID | — | ◇ UNVERIFIED |
| ASA & S Building Sys L P | Caryville | TN | — | ◇ UNVERIFIED |
| APAsc Profiles INC Dba Aep Span | Fontana | CA | — | ◇ UNVERIFIED |
| APAsc Profiles LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| ASA. Sklar Company, INC. | Victoria | TX | — | ◇ UNVERIFIED |
| ATAssistive Technology Fabricators | San Antonio | TX | — | ◇ UNVERIFIED |
| AMAtlantic Meeco | Mcalester | OK | — | ◇ UNVERIFIED |
| AMAurora Modular Industries INC | Perris | CA | — | ◇ UNVERIFIED |
| AEAzz Enclosure Systems - Chattanooga LLC | Chattanooga | TN | — | ◇ UNVERIFIED |
| BLBackyard Living Source Inc. | Meridian | ID | — | ◇ UNVERIFIED |
| BBBayland Buildings, INC. | Oshkosh | WI | — | ◇ UNVERIFIED |
| BSBbc Steel CORP. | Canby | OR | — | ◇ UNVERIFIED |
| BBB & B Welding Company, INC. | Edgemere | MD | — | ◇ UNVERIFIED |
| BMBenitez Metal Manufacturing CORP | Rio Piedras | PR | — | ◇ UNVERIFIED |
| BBBennett Building Systems, LLC | Augusta | GA | — | ◇ UNVERIFIED |
| BIBenson Industries INC | Portland | OR | — | ◇ UNVERIFIED |
| BIBenson Industries INC | Portland | OR | — | ◇ UNVERIFIED |
| BSBest Steel Buildings, INC. | Houston | TX | — | ◇ UNVERIFIED |
| BDBhp, D.b.a Global Power Components | Milwaukee | WI | — | ◇ UNVERIFIED |
| BBBig B Construction INC. | American Fork | UT | — | ◇ UNVERIFIED |
| BRBig Red Metals, LLC | Slocomb | AL | — | ◇ UNVERIFIED |
| BSBioclimatic Structures LLC | Pompton Plains | NJ | — | ◇ UNVERIFIED |
| BBBluescope Buildings North America INC | Turlock | CA | — | ◇ UNVERIFIED |
| BBBluescope Buildings North America, INC. | Selmer | TN | — | ◇ UNVERIFIED |
| BSBmarko Structures (doraville) | Atlanta | GA | — | ◇ UNVERIFIED |
| BSBmarko Structures, LLC - Long Rd | Williamston | SC | — | ◇ UNVERIFIED |
| BIBonitz INC | Columbia | SC | — | ◇ UNVERIFIED |
| BBork | Philadelphia | PA | — | ◇ UNVERIFIED |
| BMBranagans Metal Works LLC | Clayton | NC | — | ◇ UNVERIFIED |
| BUBritco Usa, LLC | Waco | TX | — | ◇ UNVERIFIED |
| BHBRM Holdings Inc. | Watertown | WI | — | ◇ UNVERIFIED |
| BWBR Welding Inc | Howell | NJ | — | ◇ UNVERIFIED |
| BIBucyrus International INC | Milwaukee | WI | — | ◇ UNVERIFIED |
| BWBuffalo Welding, INC. | Milwaukie | OR | — | ◇ UNVERIFIED |
| BSBunger Steel, Inc. | Tolleson | AZ | — | ◇ UNVERIFIED |
| BPBurrow's Post Frame Supply | Fort Gibson | OK | — | ◇ UNVERIFIED |
| BMButler Manufacturing Company | Visalia | CA | — | ◇ UNVERIFIED |
| BMButler Manufacturing Company | Birmingham | AL | — | ◇ UNVERIFIED |
| BIBW2G Investments LLC | Glenpool | OK | — | ◇ UNVERIFIED |
| CACalifornia All Steel Carports INC | Keizer | OR | — | ◇ UNVERIFIED |
| CPCalifornia Precision Components LLC | Santa Clara | CA | — | ◇ UNVERIFIED |
| CSCal Spray INC | East Palo Alto | CA | — | ◇ UNVERIFIED |
| CSCampell Steel Buildings, Inc. | Lubbock | TX | — | ◇ UNVERIFIED |
| CCapstone | Louisville | KY | — | ◇ UNVERIFIED |
| CSCarport Structures CORP | Oxford | MI | — | ◇ UNVERIFIED |
| CPCavett Portable Buildings | Ponca City | OK | — | ◇ UNVERIFIED |
| CBCeco Building Sys | Rocky Mount | NC | — | ◇ UNVERIFIED |
| CBCeco Building Systems | Mount Pleasant | IA | — | ◇ UNVERIFIED |
| CBCeco Building Systems | Columbus | MS | — | ◇ UNVERIFIED |
 Central Confinement Service LTD | Albion | NE | — | ◇ UNVERIFIED |
| COCentral Oregon Greenhouse Supply LLC | Bend | OR | — | ◇ UNVERIFIED |
| CSCentral States Manufacturing, INC. | Cedar Hill | TX | — | ◇ UNVERIFIED |
| CSCentral Steel Buildings, Inc. | Mount Airy | NC | — | ◇ UNVERIFIED |
| CSCfg Systems INC Dba Concelafab Corporation | Colorado Springs | CO | — | ◇ UNVERIFIED |
| CMCherokee Metal Building Erectors | Marietta | GA | — | ◇ UNVERIFIED |
| CTChicago Tube & Iron | Ankeny | IA | — | ◇ UNVERIFIED |
| CMChickasha Manufacturing | Chickasha | OK | — | ◇ UNVERIFIED |
 Chief Industries INC | Grand Island | NE | — | ◇ UNVERIFIED |
| CSCiti Staff Solutions INC | San Dimas | CA | — | ◇ UNVERIFIED |
| CMClassic Metals Suppliers, Corp. | Palmetto Bay | FL | — | ◇ UNVERIFIED |
| CBClearly Building Corporation | Secor | IL | — | ◇ UNVERIFIED |
| CSCleveland Steel Specialty Company | Bedford | OH | — | ◇ UNVERIFIED |
| CMClosest Meadow Building, INC. | Clovis | NM | — | ◇ UNVERIFIED |
| CBClyde Bergemann Power Group, INC. | Jesup | GA | — | ◇ UNVERIFIED |
| CMCnc Metal Solutions, LLC | Champlin | MN | — | ◇ UNVERIFIED |
| CTCoast to Coast Carports INC | Stanfield | OR | — | ◇ UNVERIFIED |
| CICoatek, INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| CACoco Architectural Grilles & Metalcraft & Advanced Architectural Grilles | Holtsville | NY | — | ◇ UNVERIFIED |
| CTColeman Tommy | Memphis | TN | — | ◇ UNVERIFIED |
| CBCommercial Building Components | Lathrop | CA | — | ◇ UNVERIFIED |
| CMCommercial Metal Plastics and Graphics Inc. | Orlando | FL | — | ◇ UNVERIFIED |
| CMComplete Manufacturing Services, INC. | Magnolia | TX | — | ◇ UNVERIFIED |
| CRContainer Repair Service | Emmaus | PA | — | ◇ UNVERIFIED |
| CCContainment Consultants, INC | Gilroy | CA | — | ◇ UNVERIFIED |
| CEControlled Enviroments, Inc. | Houston | TX | — | ◇ UNVERIFIED |
| CBCorle Bldg Sys Inc/bedford Cnty | Imler | PA | — | ◇ UNVERIFIED |
| CMCrown Metal Buildings | Cabot | AR | — | ◇ UNVERIFIED |
| CBCt Builders | Great Falls | MT | — | ◇ UNVERIFIED |
| CTC & T Building Technologies, LLC | Cypress | TX | — | ◇ UNVERIFIED |
