 American Cast Iron Pipe Company | Birmingham | 500+ | ● ACTIVE |
| KIKamtek INC | Birmingham | 500+ | ● ACTIVE |
| DNDiversified Nonferrous Technologies INC | Birmingham | 20–99 | ● ACTIVE |
 Mayco Manufacturing, LLC | Birmingham | — | ● ACTIVE |
 Mcwane, INC. | Birmingham | — | ● ACTIVE |
| NSNucor Steel Birmingham INC | Birmingham | — | ◐ LIKELY ACTIVE |
| SSSmi Steel LLC | Birmingham | — | ◐ LIKELY ACTIVE |
| USUnited States Steel Corporationfairfield Pipe Mil | Fairfield | — | ◐ LIKELY ACTIVE |
| UPUS Pipe & Foundry CO | Bessemer | — | ◐ LIKELY ACTIVE |
| HPHubbell Power Systems Leeds | Leeds | — | ◐ LIKELY ACTIVE |
| MIMayco Industries INC | Birmingham | — | ◐ LIKELY ACTIVE |
| ACAlabama Copper & Bronze CO INC | Birmingham | — | ◇ UNVERIFIED |
| BABermco Aluminum | Birmingham | — | ◇ UNVERIFIED |
| NTNucor Tublar Products INC. | Birmingham | — | ◇ UNVERIFIED |
| ASA Stucki bda Birmingham Rail | Bessemer | 1–19 | ◐ LIKELY ACTIVE |
| KIKoppers Industries,inc. - Coke Plant | Dolomite | — | ◐ LIKELY ACTIVE |
| MAMiller and Company LLC | Mulga | — | ◐ LIKELY ACTIVE |
| UPUS Pipe & Foundry CO | Birmingham | — | ◐ LIKELY ACTIVE |
| BRBrothers Recycling CO INC | Birmingham | — | ◐ LIKELY ACTIVE |
| ABA & B Foundry INC | Birmingham | — | ◇ UNVERIFIED |
| AMAlabama Metal Industries CORP | Birmingham | — | ◇ UNVERIFIED |
| ATAmerican Tube Manufacturing, INC. | Birmingham | — | ◇ UNVERIFIED |
| BPBarry Pattern and Foundry Company, INC. | Birmingham | — | ◇ UNVERIFIED |
| BBBerman Bros Iron & Metal CO INC - Bermco Aluminum | Bessemer | — | ◇ UNVERIFIED |
| EBEast Birmingham Bronze Foundry INC | Birmingham | — | ◇ UNVERIFIED |
| GIGrede Ii - Bessemer | Bessemer | — | ◇ UNVERIFIED |
| MCMcwane Cast Iron Pipe CO. | Birmingham | — | ◇ UNVERIFIED |
| MMMetso Minerals Industries INC | Birmingham | — | ◇ UNVERIFIED |
| NMNational Metals INC | Leeds | — | ◇ UNVERIFIED |
| NSNucor Steel Birmingham, INC. | Birmingham | — | ◇ UNVERIFIED |
| OSOps Sales Company | Birmingham | — | ◇ UNVERIFIED |
| SISelf Industries, INC. | Trussville | — | ◇ UNVERIFIED |
| TPTubular Products Company, INC. | Birmingham | — | ◇ UNVERIFIED |
| WBW.j. Bullock INC. | Fairfield | — | ◇ UNVERIFIED |
| ABAMICO - Birmingham | Birmingham | 20–99 | ◐ LIKELY ACTIVE |
| ATAtlas Tube-Birmingham Zekelman Industries | Birmingham | 20–99 | ◐ LIKELY ACTIVE |
| CSCMC Steel Alabama | Birmingham | 100–499 | ◐ LIKELY ACTIVE |
| HHubbell | Leeds | 100–499 | ◐ LIKELY ACTIVE |
| ITIndependence Tube Corporation | Birmingham | 100–499 | ◐ LIKELY ACTIVE |
| KCKamtek Castings | Birmingham | 100–499 | ◐ LIKELY ACTIVE |
| MMain | Birmingham | 20–99 | ◐ LIKELY ACTIVE |
| MIMayco Industries - Birmingham Main Facility | Birmingham | 100–499 | ◐ LIKELY ACTIVE |
| OUOnyx Unlimited LLC | Trussville | — | ◐ LIKELY ACTIVE |
| AAAssa Abloy Service Centers, Inc., | Birmingham | — | ◇ UNVERIFIED |
| BCBall Corporation | Birmingham | — | ◇ UNVERIFIED |
| BABermco Aluminum | Birmingham | — | ◇ UNVERIFIED |
| EEEdwards Equipment Sales INC | Birmingham | — | ◇ UNVERIFIED |
| FSFavor Steel and Fabricating INC. | Birmingham | — | ◇ UNVERIFIED |
| HBHubbell Building Expansion | Leeds | — | ◇ UNVERIFIED |
| HPHubbell Power Systems,inc.dba As Anderson Electric | Leeds | — | ◇ UNVERIFIED |
