 Contech Engineered Solutions | Wahoo | NE | — | ◇ UNVERIFIED |
| Contech Engineered Solutions LLC | Mitchell | IN | — | ◇ UNVERIFIED |
| CTContinental Tool Company INC | Redwood City | CA | — | ◇ UNVERIFIED |
| CMContour Metals CORP | South El Monte | CA | — | ◇ UNVERIFIED |
| CFContract Fabricators, INC | De Kalb | MS | — | ◇ UNVERIFIED |
| CFContract Fabricators, Inc, Iuka Facility | Iuka | MS | — | ◇ UNVERIFIED |
| CIContract Industrial Tooling | Richmond | IN | — | ◇ UNVERIFIED |
| CMContractors Materials Company | Cincinnati | OH | — | ◇ UNVERIFIED |
| CMContractors Materials LLC | New Castle | DE | — | ◇ UNVERIFIED |
| CWContractor's Welding, INC. | Saint Louis | MO | — | ◇ UNVERIFIED |
| CSContract Services Corporation of America | Raytown | MO | — | ◇ UNVERIFIED |
| CACool-vue Aluminum, INC. | Kenner | LA | — | ◇ UNVERIFIED |
| CPCooper Power Systems | Waukesha | WI | — | ◇ UNVERIFIED |
| CSCooper's Steel Fabricators INC | Shelbyville | TN | — | ◇ UNVERIFIED |
| CSCooper Steel of Virginia | Lynchburg | VA | — | ◇ UNVERIFIED |
| CSCooper Steel Site Development | Shelbyville | TN | — | ◇ UNVERIFIED |
| CSCooper Steel Site Development | Shelbyville | TN | — | ◇ UNVERIFIED |
| CSCoosa Steel Corporation | Rome | GA | — | ◇ UNVERIFIED |
| CVCoosa Valley Steel, INC. | Attalla | AL | — | ◇ UNVERIFIED |
| CICoral Industries, INC. (northport) | Northport | AL | — | ◇ UNVERIFIED |
| CICorchran INC | Waseca | MN | — | ◇ UNVERIFIED |
| CBCore Brace LLC | West Jordan | UT | — | ◇ UNVERIFIED |
 Cornerstone Fabricating & Construction Plt 1 | Hemlock | MI | — | ◇ UNVERIFIED |
| CFCornerstone Fencing CO | Milwaukie | OR | — | ◇ UNVERIFIED |
| CFCornerstone Fencing CO | Milwaukie | OR | — | ◇ UNVERIFIED |
| CMCornerstone Manufacturing, INC. | Eaton | OH | — | ◇ UNVERIFIED |
| CRCorporate Resource Services | Ontario | CA | — | ◇ UNVERIFIED |
| CMCorrugated Metals INC | Belvidere | IL | — | ◇ UNVERIFIED |
| CECosmo Enterprises LLC | New Haven | CT | — | ◇ UNVERIFIED |
| CICos-win INC. | Pine Forge | PA | — | ◇ UNVERIFIED |
| CCCothron Contracting LLC | Dover | FL | — | ◇ UNVERIFIED |
| CCCountry Custom Metalsmithing LLC | Fallon | NV | — | ◇ UNVERIFIED |
| CICourtad INC | Lansdale | PA | — | ◇ UNVERIFIED |
| CSCouse & Sons, INC | Ballston Spa | NY | — | ◇ UNVERIFIED |
| CMCovey Machine, INC. | Chicago | IL | — | ◇ UNVERIFIED |
| CCCowboy Cauldron Company | Salt Lake City | UT | — | ◇ UNVERIFIED |
| CSCowboy Steel Company | Baton Rouge | LA | — | ◇ UNVERIFIED |
| CMCox Machine, LLC | Searsmont | ME | — | ◇ UNVERIFIED |
| CRCox Rails | Richmond | VA | — | ◇ UNVERIFIED |
| CICpco, INC. | Claremore | OK | — | ◇ UNVERIFIED |
| CICraftcorps INC. | Austin | TX | — | ◇ UNVERIFIED |
| CMCraftworx Metal & Fabrication LLC | Jacksonville | FL | — | ◇ UNVERIFIED |
| CHCraigin Holdings, Inc. | New Paris | IN | — | ◇ UNVERIFIED |
| CCCr Coating & Logistics | Kissimmee | FL | — | ◇ UNVERIFIED |
| CACreative Architectural Metals INC | Bensalem | PA | — | ◇ UNVERIFIED |
| CFCreative Fabrication, INC | Covington | VA | — | ◇ UNVERIFIED |
| CMCreative Metals INC Dba Ashworth Metal Products | Anaheim | CA | — | ◇ UNVERIFIED |
| CMCreative Metals LLC | Tempe | AZ | — | ◇ UNVERIFIED |
| CMCreative Metal Solutions, Inc. | Sioux Falls | SD | — | ◇ UNVERIFIED |
| CWCreative Welding & Fabrication LLC | Fort Collins | CO | — | ◇ UNVERIFIED |
| CWCreative Werks Inc | Des Moines | IA | — | ◇ UNVERIFIED |
| CRCredit River Metalworks INC | Prior Lake | MN | — | ◇ UNVERIFIED |
| CSCreole Steel, INC. | Sulphur | LA | — | ◇ UNVERIFIED |
| CGCriterion Gate & Mfg CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| CFCrown Fence CO | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| CMCrown Metals, LLC | Albany | LA | — | ◇ UNVERIFIED |
| COCrown Oilfield Services, INC. | Morgan City | LA | — | ◇ UNVERIFIED |
| CRCrown Real Estate Holdings LLC | Las Vegas | NV | — | ◇ 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 |
| CICtm Iron Works | La Habra | 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 |
| CCCustom Creations | Dequincy | LA | — | ◇ UNVERIFIED |
 Custom Design & Manufacturing | Carrollton | MI | — | ◇ UNVERIFIED |
| CFCustom Fabricated Metals, LLC | Perris | CA | — | ◇ UNVERIFIED |
| CGCustom Grinders Sales, INC. | Chatsworth | GA | — | ◇ UNVERIFIED |
| CICustom Iron INC | Zumbrota | MN | — | ◇ UNVERIFIED |
 Custom Iron Works | Lodi | CA | — | ◇ UNVERIFIED |
| Custom Iron Works INC | Omaha | NE | — | ◇ UNVERIFIED |
| Custom Iron Works, INC. | South Beloit | IL | — | ◇ UNVERIFIED |
| CMCustom Manufacturing | Folkston | GA | — | ◇ UNVERIFIED |
| CMCustom Metal Fabricators, INC. | Garden City | GA | — | ◇ UNVERIFIED |
| CMCustom Metal Fabricators, INC. | Lake Charles | LA | — | ◇ UNVERIFIED |
| CMCustom Metals | Little Rock | AR | — | ◇ UNVERIFIED |
| CMCustom Metal & Siding | Leesville | LA | — | ◇ UNVERIFIED |
| CMCustom Metal Specialties, INC. | Pinellas Park | FL | — | ◇ UNVERIFIED |
| COCustom Ornamental Iron INC | Blacksburg | VA | — | ◇ 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 Fabricators, INC. | Randleman | NC | — | ◇ UNVERIFIED |
| CSCustom Steel Manufacturing INC. | Belton | MO | — | ◇ UNVERIFIED |
| CSCustom Steel Service | Ames | IA | — | ◇ UNVERIFIED |
| CSCustom Stud INC | Lakeville | MN | — | ◇ UNVERIFIED |
| CACut Apart Metal Art | Aurora | CO | — | ◇ UNVERIFIED |
| CICv International INC | Torrance | CA | — | ◇ UNVERIFIED |
| CWC & W Quality Products Corporation | Owensboro | KY | — | ◇ UNVERIFIED |
| CFCyncal Fabricators Inc | Bay Shore | NY | — | ◇ UNVERIFIED |
| CSCynergy Systems, INC. | Delray Beach | FL | — | ◇ UNVERIFIED |
