| DCDeere & Company | Horicon | WI | — | ◇ UNVERIFIED |
| DJDe Jong Iron Works | Orangeburg | NY | — | ◇ 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 |
| DWDeluxe Welding, INC. | Reno | NV | — | ◇ UNVERIFIED |
| DEDelwood Equipment LTD | — | WV | — | ◇ UNVERIFIED |
| DCDemag Cranes and Components CORP. (1318535255) | Solon | OH | — | ◇ UNVERIFIED |
| DADeMoss Ag Inc. | Rushville | IL | — | ◇ UNVERIFIED |
| DSDemuth Steel Products, INC. | Mount Joy | PA | — | ◇ UNVERIFIED |
| DIDenios INC | Okolona | KY | — | ◇ UNVERIFIED |
| DBDenpak Bldg Products INC | Adams Cnty | CO | — | ◇ UNVERIFIED |
| DBDenpak Building Products INC | Denver | 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 |
| DMDerco Manufacturing, INC. | Waupun | WI | — | ◇ UNVERIFIED |
| DIDerlan INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| DHDerouin Holdings, LLC | Richmond | CA | — | ◇ UNVERIFIED |
| DODesert Owl Forge LLC | Pahrump | NV | — | ◇ UNVERIFIED |
| DTDesert Tanks | Lubbock | TX | — | ◇ UNVERIFIED |
| DPDesigner Palms INC | Andover | KS | — | ◇ UNVERIFIED |
| DHDesign Hardware | Mesquite | TX | — | ◇ UNVERIFIED |
| DSDe Steel, INC | Calhan | CO | — | ◇ UNVERIFIED |
| DTDetroit Tool & Metal Products | Fort Madison | IA | — | ◇ UNVERIFIED |
| DADevincenzi Architectural Products | Burlingame | CA | — | ◇ UNVERIFIED |
| DGDfw Grating, INC. | Dallas | TX | — | ◇ UNVERIFIED |
 DGG Industries, Inc. | Attleboro | MA | — | ◇ UNVERIFIED |
| DWDg Welding and Design, LLC | Malta | OH | — | ◇ UNVERIFIED |
| DWDg Welding - Manufacturing INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| DDDh Docks LLC | Nisswa | MN | — | ◇ UNVERIFIED |
| DSDh Steel Products, LLC | Erie | PA | — | ◇ UNVERIFIED |
| DCDiadochi Capital LLC | Lake Worth Beach | FL | — | ◇ 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 |
| DIDiscount Iron Fence & Gate, INC. | Cerritos | CA | — | ◇ UNVERIFIED |
| DIDistinctive Iron LLC | Elk River | MN | — | ◇ UNVERIFIED |
| DHDiversified Holdings of Dallas, INC. | Dallas | NC | — | ◇ UNVERIFIED |
| DSDiversified Steel Fabricators, INC. | Montgomery | AL | — | ◇ UNVERIFIED |
| D5Division 5 Florida, INC. | Starke | FL | — | ◇ UNVERIFIED |
| D5Division 5, INC. | Winston | GA | — | ◇ UNVERIFIED |
| DVDivision V Sheetmetal INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| DCDixie Chopper | Fillmore | IN | — | ◇ UNVERIFIED |
| DEDjb Enterprises LTD. | Phoenix | AZ | — | ◇ UNVERIFIED |
