| CHCraigin Holdings, Inc. | New Paris | IN | — | ◇ UNVERIFIED |
| CCCr Coating & Logistics | Kissimmee | FL | — | ◇ UNVERIFIED |
| CFCreative Fabrication, INC | Covington | VA | — | ◇ UNVERIFIED |
| CMCreative Metals INC Dba Ashworth Metal Products | Anaheim | CA | — | ◇ UNVERIFIED |
| CMCreative Metal Solutions, Inc. | Sioux Falls | SD | — | ◇ UNVERIFIED |
| CWCreative Werks Inc | Des Moines | IA | — | ◇ UNVERIFIED |
| CSCreole Steel, INC. | Sulphur | LA | — | ◇ UNVERIFIED |
| CMCrown Metals, LLC | Albany | LA | — | ◇ UNVERIFIED |
| COCrown Oilfield Services, INC. | Morgan City | LA | — | ◇ UNVERIFIED |
| CTCruisin' Tikis, LLC | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| CICrystal Industries Incorporated | Elkhart | IN | — | ◇ UNVERIFIED |
| CSCrystal Steel | Gallaway | TN | — | ◇ UNVERIFIED |
| CSCrystal Steel Fabricators, LLC - Memphis Division | Gallaway | TN | — | ◇ UNVERIFIED |
| CSC S C INC | Medford | OR | — | ◇ UNVERIFIED |
| CEC&s Engineering, INC. | Meriden | CT | — | ◇ UNVERIFIED |
| CICtec INC. | Sacramento | CA | — | ◇ UNVERIFIED |
| CICumberland Ironworks, INC. | Durham | ME | — | ◇ UNVERIFIED |
| CSCundiff Steel Fab & Erecting | Orange | CA | — | ◇ UNVERIFIED |
| CSCundiff Steel Fabricating & Erecting INC | Orange | CA | — | ◇ UNVERIFIED |
| CCCurtiss-wright CORP | Wood Ridge | NJ | — | ◇ UNVERIFIED |
| CPCustom-bilt Products INC | Fairfield | AL | — | ◇ UNVERIFIED |
| CCCustom Concepts Miami Inc | Miami | FL | — | ◇ UNVERIFIED |
 Custom Design & Manufacturing | Carrollton | MI | — | ◇ UNVERIFIED |
| CFCustom Fabricated Metals, LLC | Perris | CA | — | ◇ UNVERIFIED |
| CGCustom Grinders Sales, INC. | Chatsworth | GA | — | ◇ UNVERIFIED |
 Custom Iron Works | Lodi | CA | — | ◇ UNVERIFIED |
| Custom Iron Works, INC. | South Beloit | IL | — | ◇ UNVERIFIED |
| CMCustom Metal Fabricators, INC. | Lake Charles | LA | — | ◇ UNVERIFIED |
| CMCustom Metal Fabricators, INC. | Garden City | GA | — | ◇ UNVERIFIED |
| CMCustom Metals | Little Rock | AR | — | ◇ UNVERIFIED |
| CMCustom Metal & Siding | Leesville | LA | — | ◇ UNVERIFIED |
| CPCustom Packline Engineering | Visalia | CA | — | ◇ UNVERIFIED |
| CSCustom Sheet and Plate, LLC | Tarentum | PA | — | ◇ UNVERIFIED |
| CSCustom Sheet and Steel Fabrication INC. | Council Grove | KS | — | ◇ UNVERIFIED |
| CSCustom Sheet & Steel Fabricators | Council Grove | KS | — | ◇ UNVERIFIED |
| CSCustom Steel Manufacturing INC. | Belton | MO | — | ◇ UNVERIFIED |
| CSCustom Steel Service | Ames | IA | — | ◇ UNVERIFIED |
| CSCustom Stud INC | Lakeville | MN | — | ◇ UNVERIFIED |
| CWC & W Quality Products Corporation | Owensboro | KY | — | ◇ UNVERIFIED |
| CFCyncal Fabricators Inc | Bay Shore | NY | — | ◇ UNVERIFIED |
| DFDabar Fab CO | Vero Beach | FL | — | ◇ UNVERIFIED |
| DEDade Engineering Group LLC | Miami | FL | — | ◇ UNVERIFIED |
| DUDaeil USA Corporation | Valley | AL | — | ◇ UNVERIFIED |
| DID'agostino Iron Works | East Rochester | NY | — | ◇ UNVERIFIED |
| DMDaher-tli Manufacturing | Abingdon | VA | — | ◇ UNVERIFIED |
| DIDalco Industries | Billings | MT | — | ◇ UNVERIFIED |
| DIDalco Industries, INC. | Denver | CO | — | ◇ UNVERIFIED |
| DEDalusong Engineering INC | San Carlos | CA | — | ◇ UNVERIFIED |
| DADaniel Alfred Candelaria, an Individual | Lathrop | CA | — | ◇ UNVERIFIED |
| DLDaniel Lang | Roseburg | OR | — | ◇ UNVERIFIED |
| DSDan's Steel Company | Salem | OR | — | ◇ UNVERIFIED |
| DSDan's Steel Company INC | Salem | OR | — | ◇ UNVERIFIED |
| DMDark Metal Machine Works | Oakland | CA | — | ◇ UNVERIFIED |
| DMDavid Marx, CO | Kenner | LA | — | ◇ UNVERIFIED |
| DRDavid Rosa, an Individual | Lathrop | CA | — | ◇ UNVERIFIED |
| DWDavid Whitlow Dba Whitco Steel Fabricators | Adamsville | TN | — | ◇ UNVERIFIED |
| DFDavis Fabricators, INC. | Oak Harbor | OH | — | ◇ UNVERIFIED |
| DDDay Dex CO. | Miami | FL | — | ◇ UNVERIFIED |
 Dayton Superior | Valparaiso | IN | — | ◇ UNVERIFIED |
| Dayton Superior Corporation | New Braunfels | TX | — | ◇ UNVERIFIED |
| DBDb Building Fasteners INC | Ontario | CA | — | ◇ UNVERIFIED |
| DBD B Western INC | North Bend | OR | — | ◇ UNVERIFIED |
| DCD. Clement, INC. | Dunstable | MA | — | ◇ UNVERIFIED |
| DDD & D Design Manufacturing INC. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| DMD&d Mobile Welding and Fabrication, INC. | Fort Pierce | FL | — | ◇ UNVERIFIED |
| DIDedoes Innovative Manufacturing INC | Fowlerville | MI | — | ◇ UNVERIFIED |
| DFDelco Fabrication LLC | New Orleans | LA | — | ◇ UNVERIFIED |
| DLDe Loera LLC | Los Angeles | CA | — | ◇ UNVERIFIED |
| DFDelta Fabrication, LLC | Greenville | MS | — | ◇ UNVERIFIED |
| DFDelta Fabrication & Machine, INC. | Daingerfield | TX | — | ◇ UNVERIFIED |
| DIDelta Ironworks INC | Prunedale | CA | — | ◇ UNVERIFIED |
| DEDelwood Equipment LTD | — | WV | — | ◇ UNVERIFIED |
| DCDemag Cranes and Components CORP. (1318535255) | Solon | OH | — | ◇ UNVERIFIED |
| DSDemuth Steel Products, INC. | Mount Joy | PA | — | ◇ UNVERIFIED |
| DIDenios INC | Okolona | KY | — | ◇ UNVERIFIED |
| DBDenpak Bldg Products INC | Adams Cnty | CO | — | ◇ UNVERIFIED |
| DWDentoni's Welding Works INC | Stockton | CA | — | ◇ UNVERIFIED |
| DWDentoni's Welding Works, INC. | Stockton | CA | — | ◇ UNVERIFIED |
| DADepottey Acquisitions Dba Econ-o-line Abrasive Prod INC | Grand Haven | MI | — | ◇ UNVERIFIED |
| DHDerouin Holdings, LLC | Richmond | CA | — | ◇ UNVERIFIED |
| DTDesert Tanks | Lubbock | TX | — | ◇ UNVERIFIED |
| DADesign and Fabricating INC | Cokato | MN | — | ◇ UNVERIFIED |
| DADesign and Fabricating INC | Cokato | MN | — | ◇ UNVERIFIED |
 Design Engineering & Manufacturing CO | Braham | MN | — | ◇ UNVERIFIED |
| DHDesign Hardware | Mesquite | TX | — | ◇ UNVERIFIED |
| DSDe Steel, INC | Calhan | CO | — | ◇ UNVERIFIED |
| DBDeterman Brownie INC - Nassau St | Minneapolis | MN | — | ◇ UNVERIFIED |
| DTDetroit Tool & Metal Products | Fort Madison | IA | — | ◇ UNVERIFIED |
| DMDevincenzi Metal Products | Burlingame | CA | — | ◇ UNVERIFIED |
 DGG Industries, Inc. | Attleboro | MA | — | ◇ UNVERIFIED |
| DSDh Steel Products, LLC | Erie | PA | — | ◇ UNVERIFIED |
| DWDiamond Welding INC | Honolulu | HI | — | ◇ UNVERIFIED |
| DRDiaz Roofing and Sheet Metal | Violet | LA | — | ◇ UNVERIFIED |
| DIDi-cor Industries, INC. | Bristol | CT | — | ◇ UNVERIFIED |
| DSDie Stampco INC | Bay City | MI | — | ◇ UNVERIFIED |
| DPDi Primo Fabricators INC - Watson Industrial Park | Saint Louis | MO | — | ◇ UNVERIFIED |
| DSDirect Source Supply INC. | Mamaroneck | NY | — | ◇ UNVERIFIED |
| DWdiverse welding & fabrication | Gordonville | PA | — | ◇ UNVERIFIED |
| DHDiversified Holdings of Dallas, INC. | Dallas | NC | — | ◇ UNVERIFIED |
| DMDiversified Metal Products, INC | Idaho Falls | ID | — | ◇ UNVERIFIED |
