| AIArchitectural Iron Products INC | Portland | OR | — | ◇ UNVERIFIED |
| AMArchitectural Materials | San Diego | CA | — | ◇ UNVERIFIED |
| AOArchitectural Ornamental Iron Fab., INC | Ludlow | KY | — | ◇ UNVERIFIED |
| APArchitectural Products Development, Inc. | Cleveland | OH | — | ◇ UNVERIFIED |
| ASArchitectural Sheet Metal Systems, Incorporated | Saint Louis | MO | — | ◇ UNVERIFIED |
| ASArchitectural Specialty Products INC | Chicago | IL | — | ◇ UNVERIFIED |
| AMArch Metals, INC. | Belgrade | MT | — | ◇ UNVERIFIED |
| ASArgo Safety Railings INC | Portland | OR | — | ◇ UNVERIFIED |
| ARA & R Ironworks | Tucker | GA | — | ◇ UNVERIFIED |
| ALArktura LLC | Gardena | CA | — | ◇ UNVERIFIED |
| ALArteferro LLC | Plainfield | NJ | — | ◇ UNVERIFIED |
| AFArtisan Forge Metal Works LLC | Eau Claire | WI | — | ◇ UNVERIFIED |
| AIArtistic Iron INC | Woodland | WA | — | ◇ UNVERIFIED |
| AOArtistic Ornamental Iron Works, INC. | Athens | GA | — | ◇ UNVERIFIED |
| AWArtistic Welding Work Shop | Los Angeles | CA | — | ◇ UNVERIFIED |
| AArtistwelder | Hooper | UT | — | ◇ UNVERIFIED |
| AAArts Anvil Iron Works INC | Gardena | CA | — | ◇ UNVERIFIED |
| APAsc Profiles INC Dba Aep Span | Fontana | CA | — | ◇ UNVERIFIED |
| AIAsf Ironworks INC | Eugene | OR | — | ◇ UNVERIFIED |
| AAAsheer Akram LLC | Kansas City | KS | — | ◇ UNVERIFIED |
| ARAtlantic Railing, INC. | Newport News | VA | — | ◇ UNVERIFIED |
| ASAtlantic Spars and Rigging INC | Annapolis | MD | — | ◇ UNVERIFIED |
 Automatic Access Gates, LLC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| ALAuvang LLC | Newbury Park | CA | — | ◇ UNVERIFIED |
| ATAxial to Terminal LLC | Richmond | CA | — | ◇ UNVERIFIED |
| AIAxsom Iron Works, LLC | Siler City | NC | — | ◇ UNVERIFIED |
| ADA.y.'s Designs in Iron INC | San Diego | CA | — | ◇ UNVERIFIED |
| AZA Zahner Company | Las Vegas | NV | — | ◇ UNVERIFIED |
| AAAzmark Aero Systems, LLC | Gilbert | AZ | — | ◇ UNVERIFIED |
| AAAztec Artistic Productions LTD | Portland | OR | — | ◇ UNVERIFIED |
| AOAztlan Ornamental Iron Fab | Stockton | CA | — | ◇ UNVERIFIED |
| BIBachiller Iron Works, INC. | Miami | FL | — | ◇ UNVERIFIED |
| BIBakker's Ironworks INC. | Phoenix | AZ | — | ◇ UNVERIFIED |
| BIBalco INC. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| BCBaltimore City Dept. of Housing | Baltimore | MD | — | ◇ UNVERIFIED |
| BSBaltimore Steel Erectors LLC | White Marsh | MD | — | ◇ UNVERIFIED |
| BGBanker Grating, LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| BMBapko Metal INC | Lakeside | CA | — | ◇ UNVERIFIED |
| BIBarca Iron Work | Los Angeles | CA | — | ◇ UNVERIFIED |
| BFBarfield Fence & Wall | Apopka | FL | — | ◇ UNVERIFIED |
| BABarnett Aldon Ironworks | Albuquerque | NM | — | ◇ UNVERIFIED |
| BOBarnett Outdoors LLC | Tarpon Springs | FL | — | ◇ UNVERIFIED |
| BSBase Specialties INC | Farmington | MN | — | ◇ UNVERIFIED |
| BIBauer Industries LLC Dba Bauer Custom Welding | Saint Paul | MN | — | ◇ UNVERIFIED |
| BOBay Ornamental Iron & Welding | Costa Mesa | CA | — | ◇ UNVERIFIED |
| BSBay Steel Co., INC. | Halifax | MA | — | ◇ UNVERIFIED |
| BVBay View Railing & Ornamental, INC. | Saint Francis | WI | — | ◇ UNVERIFIED |
| BIBc Iron Designs INC. | Fairfield | CA | — | ◇ UNVERIFIED |
| BCB & C Metals | Caledonia | MO | — | ◇ UNVERIFIED |
| BCB & C Welding and Iron Works | Garden Grove | CA | — | ◇ UNVERIFIED |
