| BNBurnham & Northern Inc | Coldwater | MI | — | ◇ UNVERIFIED |
| BRBurns Rod Welding LLC | Suttons Bay | MI | — | ◇ UNVERIFIED |
| BFBusbar Fabricators, LLC. | Fort Smith | AR | — | ◇ UNVERIFIED |
| BIBusby International | Moses Lake | WA | — | ◇ UNVERIFIED |
| BIBusch Iron & Steel CO INC | Knoxville | TN | — | ◇ UNVERIFIED |
| BCBway Corporation | Sturtevant | WI | — | ◇ UNVERIFIED |
| BFBWC Fabrication | Rancho Cordova | CA | — | ◇ UNVERIFIED |
| BHBw Hvac Operations LLC | Portland | OR | — | ◇ UNVERIFIED |
| BWB & W Manufacturing Company | Tulsa | OK | — | ◇ UNVERIFIED |
| BSBws Specialty Fabrication INC. | Springville | NY | — | ◇ UNVERIFIED |
| CIC23 Investments LLC | Weston | WI | — | ◇ UNVERIFIED |
| CWC4 Welding INC | Sauk Rapids | MN | — | ◇ UNVERIFIED |
| CSCabell Sheet Metal and Roofing, INC. | Ceredo | WV | — | ◇ UNVERIFIED |
| CMCabrac Mfg | San Fernando | CA | — | ◇ UNVERIFIED |
| CMCactus Metalworks INC. | Hesperia | CA | — | ◇ UNVERIFIED |
| CVCactus Varied Industries LLC | Amarillo | TX | — | ◇ UNVERIFIED |
| CSCadet Sheet Metal, INC. | Denver | CO | — | ◇ UNVERIFIED |
| CCCadillac Culvert INC | Cadillac | MI | — | ◇ UNVERIFIED |
| COCadillac Ornamental Iron Mfg | Oxford | MI | — | ◇ UNVERIFIED |
| CMCajah's Machine - Flexible Products, LLC | Lenoir | NC | — | ◇ UNVERIFIED |
| CICalbrandt INC | Delano | MN | — | ◇ UNVERIFIED |
| CCCal Coast Manufacturing INC | Turlock | CA | — | ◇ UNVERIFIED |
| CMCalco Metal Works, INC. | Lubbock | TX | — | ◇ UNVERIFIED |
| CSCalcor Space Fac INC | Whittier | CA | — | ◇ UNVERIFIED |
| CCCalculated Custom Metal Works LLC | Oakwood Village | OH | — | ◇ UNVERIFIED |
| CCCal Customs Fabrications LLC | Bakersfield | CA | — | ◇ UNVERIFIED |
| CCalfabco | South El Monte | CA | — | ◇ UNVERIFIED |
| CMCalhm Metals INC Dba Weld-kraft | Saint Louis Park | MN | — | ◇ UNVERIFIED |
| CDCalhoun Design and Metalworks | Atlanta | GA | — | ◇ UNVERIFIED |
| CRCaliber Range CORP | Huntington Beach | CA | — | ◇ UNVERIFIED |
| CACalifornia Air Conveying LLC | Paramount | CA | — | ◇ UNVERIFIED |
| CBCalifornia Business Environments, Inc | Morgan Hill | CA | — | ◇ UNVERIFIED |
| CCCalifornia Chassis INC | Anaheim | CA | — | ◇ UNVERIFIED |
| CECalifornia Expanded Metal Products CORP | City of Industry | CA | — | ◇ UNVERIFIED |
| CECalifornia Expanded Metals Products CO | Pittsburg | CA | — | ◇ UNVERIFIED |
| CFCalifornia Fabrication | Canoga Park | CA | — | ◇ UNVERIFIED |
| CSCalifornia Sheet Metal INC | Sacramento | CA | — | ◇ UNVERIFIED |
| CSCalifornia Steel Industries INC | Fontana | CA | — | ◇ UNVERIFIED |
| CSCalifornia Steel Stair & Rail | Manteca | CA | — | ◇ UNVERIFIED |
| CECallac Enterprises LLC | Portland | OR | — | ◇ UNVERIFIED |
 Cal Sierra Pipe LLC | Stockton | CA | — | ◇ UNVERIFIED |
| CCCalvert City Marine Works LLC | Calvert City | KY | — | ◇ UNVERIFIED |
| CICalvin Industries, LLC | Skiatook | OK | — | ◇ UNVERIFIED |
| CACamblin at 2257, LLC | Rialto | CA | — | ◇ UNVERIFIED |
| CSCamblin Steel Service, Inc. | Rocklin | CA | — | ◇ UNVERIFIED |
| CSCamblin Steel Service, Inc. | Phoenix | AZ | — | ◇ UNVERIFIED |
| CSCamblin Steel Service, INC | Sacramento | CA | — | ◇ UNVERIFIED |
| CCCambria Csd Water Dept. - Richard Street | Cambria | CA | — | ◇ UNVERIFIED |
| CPCambridge Press | Somerville | MA | — | ◇ UNVERIFIED |
| CMCamelot Metals | Blaine | MN | — | ◇ UNVERIFIED |
