| CLCarr Lane Drill Bushing CO. | Austin | TX | — | ◇ UNVERIFIED |
| CHCarsten Holdings, LLC | Newton | KS | — | ◇ UNVERIFIED |
| CICarter Iron and Steel Company | Hampton | VA | — | ◇ UNVERIFIED |
| CBCasco Bay Steel - Saco | Saco | ME | — | ◇ UNVERIFIED |
| CBCasco Bay Steel Structures, INC. | South Portland | ME | — | ◇ UNVERIFIED |
| CPCast Pac, INC. | Allentown | PA | — | ◇ UNVERIFIED |
| CSCast Sheet Metal LLC | Mission | TX | — | ◇ UNVERIFIED |
| CSCast Sheet Metal LLC | Bryan | TX | — | ◇ UNVERIFIED |
| CCCatalina Composites | Garden Grove | CA | — | ◇ UNVERIFIED |
| CSCataract Steel Industries Pa, INC. | Mckeesport | PA | — | ◇ UNVERIFIED |
| CICateck, INC. | Saint Peters | MO | — | ◇ UNVERIFIED |
| CGCaterpillar Global Mining | South Milwaukee | WI | — | ◇ UNVERIFIED |
| CICaterpillar INC Seals Metalcasting Facility | Toccoa | GA | — | ◇ UNVERIFIED |
| CPCaterpillar Paving Products INC | New Ulm | MN | — | ◇ UNVERIFIED |
| CBCavo Build Design | Gloucester City | NJ | — | ◇ UNVERIFIED |
| CCb&i | Lake Charles | LA | — | ◇ UNVERIFIED |
| CCC & C Fabrication, LLC | Lanett | AL | — | ◇ UNVERIFIED |
| CCC & C Fabricators, INC. | Dacula | GA | — | ◇ UNVERIFIED |
| CCC C Ironworks LLC | New Middletown | OH | — | ◇ UNVERIFIED |
| CMCencal Machine CO INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| CRCentech Rebar LLC | San Bernardino | CA | — | ◇ UNVERIFIED |
| CACentral Al Fabricators INC | Columbiana | AL | — | ◇ UNVERIFIED |
| CCCentral Carolina Sprinkler INC. | Lincolnton | NC | — | ◇ UNVERIFIED |
| CDCentral Denver Iron Works, INC | Denver | CO | — | ◇ UNVERIFIED |
| CFCentral Florida Custom Trailers, INC. | Orlando | FL | — | ◇ UNVERIFIED |
| CICentral Illinios Steel Company | Guntersville | AL | — | ◇ UNVERIFIED |
 Central Metal Fabricators, INC. | Miami | FL | — | ◇ UNVERIFIED |
| CMCentral Minnesota Fabricating INC | Willmar | MN | — | ◇ UNVERIFIED |
| CSCentral Steel & Ornamental Supply CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| CTCentral Texas Express Metalwork, LLC | San Antonio | TX | — | ◇ UNVERIFIED |
| CVCentral Valley Fabricators | Stockton | CA | — | ◇ UNVERIFIED |
| CWCentral Welding & Machine LLC | Hutchinson | KS | — | ◇ UNVERIFIED |
| CWCentral Wire & Iron Works INC | Saint Louis | MO | — | ◇ UNVERIFIED |
| CCentria | Ambridge | PA | — | ◇ UNVERIFIED |
| CICenturion Industries INC | Garrett | IN | — | ◇ UNVERIFIED |
| CMCentury Metals & Supplies, INC. | Miami Gardens | FL | — | ◇ UNVERIFIED |
| CSCentury Steel Products, INC. | Sterling | VA | — | ◇ UNVERIFIED |
| CICeo, INC. | Sapulpa | OK | — | ◇ UNVERIFIED |
| CCCerta Craft, Inc. | Indianapolis | IN | — | ◇ UNVERIFIED |
| CICerti-fab Industries, INC. | Crosby | TX | — | ◇ UNVERIFIED |
| CICgk INC Dba Paradise Steel | South El Monte | CA | — | ◇ UNVERIFIED |
| CICgk INC Dba Premier Steel Fabrication | South El Monte | CA | — | ◇ UNVERIFIED |
| CGC & G Machine | Granby | MA | — | ◇ UNVERIFIED |
| CLChallenger Lifts INC | Louisville | KY | — | ◇ UNVERIFIED |
| CEChamfer Engineering INC | Brooklyn Park | MN | — | ◇ UNVERIFIED |
| CHChampion Home Builders - Arkansas City (w Madison Ave) | Arkansas City | KS | — | ◇ UNVERIFIED |
| CIChampion Ironworks Incorporated | Berryville | VA | — | ◇ UNVERIFIED |
| CFChannelview Facility | Houston | TX | — | ◇ UNVERIFIED |
| CLCharley's LP Truck CORP. | Orlando | FL | — | ◇ UNVERIFIED |
| CIChart Industries, LLC | Troy | NY | — | ◇ UNVERIFIED |
| CWChenoa Welding & Fabrication, INC. | Chenoa | IL | — | ◇ UNVERIFIED |
| CHCherry Hill Fabrication | Curtis Bay | MD | — | ◇ UNVERIFIED |
| CECherrytree Enterprises INC | Kansas City | KS | — | ◇ UNVERIFIED |
| CEChickasaw Energy Solutions | Marietta | OK | — | ◇ UNVERIFIED |
| CCCii Cobb Industrial, INC. | Arlington | TX | — | ◇ UNVERIFIED |
| CICinco Iron Works INC | Ontario | CA | — | ◇ UNVERIFIED |
| CHCircle H Welding & Fabrication, INC. | Seale | AL | — | ◇ UNVERIFIED |
| CCCives Corporation - Augusta | Augusta | ME | — | ◇ UNVERIFIED |
| CSCives Steel | Augusta | ME | — | ◇ UNVERIFIED |
| CSCives Steel Company | Winchester | VA | — | ◇ UNVERIFIED |
| CSCives Steel Company, Mid-west Division | Wolcott | IN | — | ◇ UNVERIFIED |
| CECivic Enterprises INC | West Monroe | LA | — | ◇ UNVERIFIED |
| CWC&j Welding and Fabricating, INC | Smyrna | GA | — | ◇ UNVERIFIED |
| CKC K Johnson Industries | Arcata | CA | — | ◇ UNVERIFIED |
| CSCladding Systems, INC | Tampa | FL | — | ◇ UNVERIFIED |
| CPClark Pacific Dba Pacific Embedded Products | Fontana | CA | — | ◇ UNVERIFIED |
| CSClark Substations L L C | Calera | AL | — | ◇ UNVERIFIED |
| CWClark Welding and Fabricating, INC. | Frederick | MD | — | ◇ UNVERIFIED |
| CFClayton Fabrication and Metal Works INC. | Sikeston | MO | — | ◇ UNVERIFIED |
| CSClearview Structural Steel Souderton Plt | Souderton | PA | — | ◇ UNVERIFIED |
| CIClement Industries INC | Minden | LA | — | ◇ UNVERIFIED |
| CSClermont Steel Fabricating, LLC | Batavia | OH | — | ◇ UNVERIFIED |
| CYCleveland Yutaka Corporation | Shelby | NC | — | ◇ UNVERIFIED |
| CKCliff Koppe Metals | Kelso | WA | — | ◇ UNVERIFIED |
| CMC&L Metal Sales LLC | Portland | OR | — | ◇ UNVERIFIED |
| CFCls Fabrication INC | Bend | OR | — | ◇ UNVERIFIED |
| CSC&l Steel | Jacksonville | FL | — | ◇ UNVERIFIED |
| CACMA Acquisitions, Inc. | Saint Joseph | MO | — | ◇ UNVERIFIED |
| CACmc Anchoring Systems | Salisbury | NC | — | ◇ UNVERIFIED |
| CCCmc Construction Svc | Kailua | HI | — | ◇ UNVERIFIED |
| CJCmc Joist and Deck Sc | Eastover | SC | — | ◇ UNVERIFIED |
| CJCmc Joist and Deck/ White Deer Twp | New Columbia | PA | — | ◇ UNVERIFIED |
| CJCmc Joist & Deck Iowa | Iowa Falls | IA | — | ◇ UNVERIFIED |
| COCmc of Georgia | Toccoa | GA | — | ◇ UNVERIFIED |
| CPCmc Post Oklahoma LLC CO Commercial Met / Cmc Southern Post Durant | Durant | OK | — | ◇ UNVERIFIED |
| CRCmc Rebar | Fredericksburg | VA | — | ◇ UNVERIFIED |
| CRCmc Rebar | Navasota | TX | — | ◇ UNVERIFIED |
| CRCmc Rebar-ct-plainville | Plainville | CT | — | ◇ UNVERIFIED |
| CRCmc Rebar-ga-atlanta | Duluth | GA | — | ◇ UNVERIFIED |
| CRCmc Rebar-in Muncie | Muncie | IN | — | ◇ UNVERIFIED |
| CRCmc Rebar - Kansas City | Kansas City | MO | — | ◇ UNVERIFIED |
| CRCmc Rebar Muncie North | Muncie | IN | — | ◇ UNVERIFIED |
| CRCmc Rebar - Muskogee | Muskogee | OK | — | ◇ UNVERIFIED |
| CRCmc Rebar Nc Raleigh | Raleigh | NC | — | ◇ UNVERIFIED |
| CRCmc Rebar Reno | Sparks | NV | — | ◇ UNVERIFIED |
| CRCmc Rebar-tn-memphis | Collierville | TN | — | ◇ UNVERIFIED |
| CRCmc Rebar - Wa - Auburn South | Auburn | WA | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators | Houston | TX | — | ◇ UNVERIFIED |
| CMC M C Steel Fabricators, INC. | Starke | FL | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators, INC | Las Vegas | NV | — | ◇ UNVERIFIED |
