| IFIndustrial Fabricators of Virginia INC | Fishersville | VA | — | ◇ UNVERIFIED |
| IMIndustrial Machine & Mfg CO | South El Monte | CA | — | ◇ UNVERIFIED |
| IMIndustrial Manufacturing and Installations, Inc | Sedalia | CO | — | ◇ UNVERIFIED |
| IPIndustrial Plating & Machine, INC. | Bluefield | WV | — | ◇ UNVERIFIED |
| IPIndustrial Precision Coatings INC | Randolph | MA | — | ◇ UNVERIFIED |
| ISIndustrial Sheetmetal & Fabricators, INC. | Vidor | TX | — | ◇ UNVERIFIED |
| ISIndustrial Steel Construction Incorporated | Gary | IN | — | ◇ UNVERIFIED |
| ISIndustrial Steel Fabrication, Incorporated | Hazelwood | MO | — | ◇ UNVERIFIED |
| ISIndustrial Steel Fabricators, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
 Industrial Tool & Die Co., INC. | Harlingen | TX | — | ◇ UNVERIFIED |
| ITIndustrial Toolz INC | Kenosha | WI | — | ◇ UNVERIFIED |
| ILInesh LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| ICInfra-metals CO. | Marseilles | IL | — | ◇ UNVERIFIED |
| ILInnofab LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| IIInnovations in Iron INC | Eugene | OR | — | ◇ UNVERIFIED |
| IAInnovative Architectural Solutions INC | Ontario | CA | — | ◇ UNVERIFIED |
| IIInnovative Industrial | Brownsville | TX | — | ◇ UNVERIFIED |
| IIInnovative Industrial Fabricators LLC | Keithville | LA | — | ◇ UNVERIFIED |
| IMInnovative Metal Design INC | Troutdale | OR | — | ◇ UNVERIFIED |
| IMInnovative Metal Solutions | Mount Holly | NJ | — | ◇ UNVERIFIED |
| IIInstatech Industries, Inc. | Oakland Park | FL | — | ◇ UNVERIFIED |
| ICInsulated Component Structures of Fl, INC. | Eustis | FL | — | ◇ UNVERIFIED |
| IMIntegrated Mechanical INC | Albany | OR | — | ◇ UNVERIFIED |
| ISIntegrated Steel | Brooksville | FL | — | ◇ UNVERIFIED |
| ITIntegrated Tower Systems | Tulsa | OK | — | ◇ UNVERIFIED |
| ITIntegrity Tool INC. | Ontario | NY | — | ◇ UNVERIFIED |
| IIntellicept | El Cajon | CA | — | ◇ UNVERIFIED |
| IFIntelligent Fixtures | El Monte | CA | — | ◇ UNVERIFIED |
| ISIntelligent Steel Solutions, L.l.c. | New Orleans | LA | — | ◇ UNVERIFIED |
| IIInternational Iron Works LLC | Arvada | CO | — | ◇ UNVERIFIED |
| ISInternational Steel & Counterweights LLC | Youngstown | OH | — | ◇ UNVERIFIED |
| ISInternational Steel Framing | League City | TX | — | ◇ UNVERIFIED |
| IWInternational West, INC Dba Continental Industries | Anaheim | CA | — | ◇ UNVERIFIED |
| IWInternational Wrought Iron Lt | Chino | CA | — | ◇ UNVERIFIED |
| IFIntersteel Fabrication INC | Louisville | KY | — | ◇ UNVERIFIED |
| ISIntl Special Attractions LLC | Puyallup | WA | — | ◇ UNVERIFIED |
| IGIntricate Grinding & Machine Specialties | Norton Shores | MI | — | ◇ UNVERIFIED |
| IOIrmw of Colorado, INC. | Aspen | CO | — | ◇ UNVERIFIED |
| IAIron Access, INC. | Houston | TX | — | ◇ UNVERIFIED |
| ICIron City Iron Works Inc | Trussville | AL | — | ◇ UNVERIFIED |
| ICIron City Mfg INC | Pacoima | CA | — | ◇ UNVERIFIED |
| ICIron Crafters Security Products Inc | Ashland | MS | — | ◇ UNVERIFIED |
| IDIron Dog Fabrication INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| ILIronfab, LLC | Columbus | OH | — | ◇ UNVERIFIED |
| IFIron Fabrication Services, INC. | Jessup | MD | — | ◇ UNVERIFIED |
| IFIron Fence Specialists, INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| IIIronfire, INC | Brainerd | MN | — | ◇ UNVERIFIED |
| IGIron Gate Shoppe | Puyallup | WA | — | ◇ UNVERIFIED |
| IIIronhead INC | Vale | OR | — | ◇ UNVERIFIED |
| IIIron Innovations, INC | Madison | MS | — | ◇ UNVERIFIED |
| IIIron Integrity LLC | Hayden | CO | — | ◇ UNVERIFIED |
| IMIron Man Mize, LLC | Bogart | GA | — | ◇ UNVERIFIED |
| ILIron&Oak LLC | Bethel | CT | — | ◇ UNVERIFIED |
| IMIronside Metal Works | Arcata | CA | — | ◇ UNVERIFIED |
| IOIronsmiths of Distinction, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| IMIronstone Metal Works | San Carlos | CA | — | ◇ UNVERIFIED |
| ISIrontree Solutions, LLC | Williams | CA | — | ◇ UNVERIFIED |
| IFIronwood Fabrication LLC | Bellingham | WA | — | ◇ UNVERIFIED |
| IWIron Works, INC. | Milford | DE | — | ◇ UNVERIFIED |
| IWIron Works, INC. | Denton | MD | — | ◇ UNVERIFIED |
| IWIron World Manufacturing LLC | Laurel | MD | — | ◇ UNVERIFIED |
| IBItw Building Components Group INC. | Earth City | MO | — | ◇ UNVERIFIED |
| INItz Nc INC | Kenosha | WI | — | ◇ UNVERIFIED |
| IAIws Acquisition CORP | Portland | OR | — | ◇ UNVERIFIED |
| J6J 6 Investments, LLC | Henderson | NV | — | ◇ UNVERIFIED |
 Jack A. Farrior, INC. | Farmville | NC | — | ◇ UNVERIFIED |
| JCJack's Custom Steel Products | Arcadia | OK | — | ◇ UNVERIFIED |
| JGJacob Gilliam | Bryan | TX | — | ◇ UNVERIFIED |
| JOJade Originals INC | Portland | OR | — | ◇ UNVERIFIED |
| JLJaecie Lopez | Ontario | OR | — | ◇ UNVERIFIED |
| JIJaimes Industries | Belleville | MI | — | ◇ UNVERIFIED |
| JWJakes Welding | Ringwood | OK | — | ◇ UNVERIFIED |
| JSJamac Steel, INC | Ontario | CA | — | ◇ UNVERIFIED |
| JAJames a Mcbrady, INC | Scarborough | ME | — | ◇ UNVERIFIED |
| JMJames M Kratzke | Perham | MN | — | ◇ UNVERIFIED |
| JRJames Railcar Service | Chico | CA | — | ◇ UNVERIFIED |
| JRJames River Iron | Richmond | VA | — | ◇ UNVERIFIED |
| JAJ & a Metal Specialist, LLC | Austell | GA | — | ◇ UNVERIFIED |
| JIJanco Industries, INC. | Sully | IA | — | ◇ UNVERIFIED |
| JAJ and E Steel Fabrication CORP | Woodinville | WA | — | ◇ UNVERIFIED |
| JAJ & a Powder Coating | Oakdale | CA | — | ◇ UNVERIFIED |
| JWJarosz Welding CO. INC. | Hartford | CT | — | ◇ UNVERIFIED |
| JRJavier Rivas Fernandez | Lynwood | CA | — | ◇ UNVERIFIED |
| JLJaymar, LLC | East Longmeadow | MA | — | ◇ UNVERIFIED |
| JSJay-r's Steel & Welding, INC. | Mundelein | IL | — | ◇ UNVERIFIED |
| JCJays Custom Fabrication INC | Newberg | OR | — | ◇ UNVERIFIED |
| JBJ & B Machine Works | Santa Clara | CA | — | ◇ UNVERIFIED |
| JBJ & B Metal Processing | Flint | MI | — | ◇ UNVERIFIED |
| JMJ.b. Metal Works, INC. | Des Plaines | IL | — | ◇ UNVERIFIED |
| JLJbs, LLC | Johnstown | NY | — | ◇ UNVERIFIED |
| JSJ.b. Steel, INC. | Medford | OR | — | ◇ UNVERIFIED |
| JWJ.b.s' Welding, INC. | Ada | OK | — | ◇ UNVERIFIED |
| JCJ Cap Manufacturing LLC | Seminole | TX | — | ◇ UNVERIFIED |
| JAJ&c Artesanos En Acero, INC. | Juana Diaz | PR | — | ◇ UNVERIFIED |
| JIJC Iron Ornamental Works Inc | Mangonia Park | FL | — | ◇ UNVERIFIED |
| JIJC Iron Ornamental Works Inc | West Palm Beach | FL | — | ◇ UNVERIFIED |
| JIJC Iron Ornamental Works Inc | West Palm Beach | FL | — | ◇ UNVERIFIED |
| JCJ & C Machine Fabricating INC. | Baton Rouge | LA | — | ◇ UNVERIFIED |
| JMJc Metal Specialists INC | South San Francisco | CA | — | ◇ UNVERIFIED |
| JGJcm Greenhouse Mfg. LLC | Forest Hill | LA | — | ◇ UNVERIFIED |
