| BCBear Creek Fabrication LLC | Bear Creek | NC | — | ◇ UNVERIFIED |
| BOBear Ornamental, INC. | Saint George | UT | — | ◇ UNVERIFIED |
| BVBear Valley Fabricators & Steel Supply INC | Lucerne Valley | CA | — | ◇ UNVERIFIED |
| BCBeauty Craft Metal Fabricators | Bedford Heights | OH | — | ◇ UNVERIFIED |
| BRBec-don Ringgold, INC. | Ringgold | GA | — | ◇ UNVERIFIED |
| BDBeck Developers, LLC | Sterling | VA | — | ◇ UNVERIFIED |
| BBBecker Boiler Co., INC. | Milwaukee | WI | — | ◇ UNVERIFIED |
| BSBeckley Steel, INC. | Crab Orchard | WV | — | ◇ UNVERIFIED |
| BJBee Jay Iron INC | Englewood | CO | — | ◇ UNVERIFIED |
| BMBegneaud Manufacturing INC | Scott | LA | — | ◇ UNVERIFIED |
| BMBehlen Manufacturing CO | Goshen | IN | — | ◇ UNVERIFIED |
| BWBekos Welding INC | Canby | OR | — | ◇ UNVERIFIED |
| BEBell Equipment, LLC | Inverness | MS | — | ◇ UNVERIFIED |
| BSBellis Steel CO INC | Chatsworth | CA | — | ◇ UNVERIFIED |
| BEB - E Manufacturing Co., INC. | Monroe | NC | — | ◇ UNVERIFIED |
| BWBen-co Welding, INC. Dba Benco Welding Company, INC. | Winder | GA | — | ◇ UNVERIFIED |
| BBBend Bronze INC | Estacada | OR | — | ◇ UNVERIFIED |
| BIBendco INC. | Pasadena | TX | — | ◇ UNVERIFIED |
| BMBender Mechanical Services INC | Lebanon | OR | — | ◇ UNVERIFIED |
| BSBending Specialists, LLC | Lockport | IL | — | ◇ UNVERIFIED |
| BIBendtec INC | Duluth | MN | — | ◇ UNVERIFIED |
| BIBenecor, INC. | Wichita | KS | — | ◇ UNVERIFIED |
| BHBen Hur Steel Worx | Saint Louis | MO | — | ◇ UNVERIFIED |
| BFBenicia Foundry & Iron Works | Benicia | CA | — | ◇ UNVERIFIED |
| BWBenitez Wrought Iron INC | Sylmar | CA | — | ◇ UNVERIFIED |
| BCBenjamin C Lavoie | Buzzards Bay | MA | — | ◇ UNVERIFIED |
| BFBenjamin Fabricators, LLC | Silver Spring | MD | — | ◇ UNVERIFIED |
| BSBennett Steel Fabrication, INC. | Sapulpa | OK | — | ◇ UNVERIFIED |
| BIBennington Iron Works INC | Bennington | VT | — | ◇ UNVERIFIED |
| BIBensalem Ii Enterprises | Bensalem | PA | — | ◇ UNVERIFIED |
| BSBenson Steel Fabricators | Saugerties | NY | — | ◇ UNVERIFIED |
| BGBergeron Group, INC. | Joliet | IL | — | ◇ UNVERIFIED |
| BSBerger Steel Corporation | Mcclellan | CA | — | ◇ UNVERIFIED |
| BFBergh's Fabricating INC | Willmar | MN | — | ◇ UNVERIFIED |
| BSBesco Steel Supply of Georgia, INC. | Winder | GA | — | ◇ UNVERIFIED |
| BMBess Materials Testing and Inspection INC | Hayward | CA | — | ◇ UNVERIFIED |
| BFBest Fence Company | Mulberry | FL | — | ◇ UNVERIFIED |
| BIBest Iron Works | San Bernardino | CA | — | ◇ UNVERIFIED |
 Best Ironworks and Screens, INC. | Fort Bliss | TX | — | ◇ UNVERIFIED |
| BFBeta Fence USA | Ennis | TX | — | ◇ UNVERIFIED |
| BIBethesda Iron Works, INC. | Rockville | MD | — | ◇ UNVERIFIED |
| BWBet-mac Wilson Steel, INC. | Creedmoor | NC | — | ◇ UNVERIFIED |
| BBBetter Burglar Bars INC. | Houston | TX | — | ◇ UNVERIFIED |
| BCBevel Corporation | Sulphur | LA | — | ◇ UNVERIFIED |
| BSBeyond Steel Fabrication LLC | Redlands | CA | — | ◇ UNVERIFIED |
| BSBeyond Steel Fabrication, LLC Dba Mission Steel Fabrication | Mentone | CA | — | ◇ UNVERIFIED |
| BEBfm Energy Products CORP | Santa Ana | CA | — | ◇ UNVERIFIED |
| BIBhp, INC. | Milwaukee | WI | — | ◇ UNVERIFIED |
| B3Big 3 Precision Products, INC. | Centralia | IL | — | ◇ UNVERIFIED |
| BIB I G Enter. INC | South El Monte | CA | — | ◇ UNVERIFIED |
| BOBig Orange Gate CO LLC | Albany | KY | — | ◇ UNVERIFIED |
| BRBig Rivers Electric Kenneth Coleman Power Plant | Hawesville | KY | — | ◇ UNVERIFIED |
| BRBig R Manufacturing LLC | Greeley | CO | — | ◇ UNVERIFIED |
| BIBil-jax INC | Archbold | OH | — | ◇ UNVERIFIED |
| BWBillington Welding & Mfg. | Modesto | CA | — | ◇ UNVERIFIED |
| BCBills Custom Fab | Alma | MI | — | ◇ UNVERIFIED |
| BCBills Custom Fab | East Lansing | MI | — | ◇ UNVERIFIED |
| BWBilly's Welding and Repair Service, INC. | Erwin | NC | — | ◇ UNVERIFIED |
| BPBiofab Products, INC. | Butler | PA | — | ◇ UNVERIFIED |
| BMBiopower Manufacturing LLC | Foley | AL | — | ◇ UNVERIFIED |
| BSBishop Steel Co, INC. | East Point | GA | — | ◇ UNVERIFIED |
| BIBison Iron & Step | Buffalo | NY | — | ◇ UNVERIFIED |
| BHBitemark Holdings, LLC | Aurora | IL | — | ◇ UNVERIFIED |
| BCBkb Construction LP | Los Angeles | CA | — | ◇ UNVERIFIED |
| BIBK Iron Works Corp | Brooklyn | NY | — | ◇ UNVERIFIED |
| BDBlack Dog Consulting INC Dba Ch Yarber Constructio | Cheyenne | WY | — | ◇ UNVERIFIED |
| BFBlack Flag Metalsmith LLC | Alachua | FL | — | ◇ UNVERIFIED |
| BEBlackhawk Enterprises Company | San Marcos | TX | — | ◇ UNVERIFIED |
| BHBlack Hills Railings LLC | Rapid City | SD | — | ◇ UNVERIFIED |
| BOBlack Oak Foundry | Ontario | CA | — | ◇ UNVERIFIED |
| BWBlackwell's Welding, INC. | Jessup | MD | — | ◇ UNVERIFIED |
| BCBlank & Cables INC | Oakland | CA | — | ◇ UNVERIFIED |
| BFBlazer Fabricating LLC Bessemer Plant | Bessemer | AL | — | ◇ UNVERIFIED |
| BFBlazer Fabricating, LLC (pawnee Plant) | Birmingham | AL | — | ◇ UNVERIFIED |
| BSBlazing Structure Steel INC | Riverside | CA | — | ◇ UNVERIFIED |
| BLB Line Systems Incorporated | Norcross | GA | — | ◇ UNVERIFIED |
| BLB & L Steel Fabrications, INC. | Prairieville | LA | — | ◇ UNVERIFIED |
| BTBlt Tanks, L.l.c. | Corinth | MS | — | ◇ UNVERIFIED |
| BIBluearc Innovations LLC / Bluearc Innovations LLC | Marlow | OK | — | ◇ UNVERIFIED |
| BDBlue Dot Steel & Supply, INC. | Tempe | AZ | — | ◇ UNVERIFIED |
| BRBlue Ridge Fabricators, INC. | Roanoke | VA | — | ◇ UNVERIFIED |
| BWBlue Water Manufacturing LLC | Chaska | MN | — | ◇ UNVERIFIED |
| BWBluewater Welding and Fabrication, LLC. | Dennisville | NJ | — | ◇ UNVERIFIED |
| BEBlum Enterprises, INC. | Baton Rouge | LA | — | ◇ UNVERIFIED |
| BPBlytheville Plateworks, INC | Jackson | TN | — | ◇ UNVERIFIED |
| BFBMC Fabrication & Erection, Inc | Spanish Fork | UT | — | ◇ UNVERIFIED |
| BMBmc Metalworks LLC | Columbia | TN | — | ◇ UNVERIFIED |
| BMBmg Metals INC | Richmond | VA | — | ◇ UNVERIFIED |
| BMBmg Metals INC | Lynchburg | VA | — | ◇ UNVERIFIED |
| BMB&m Metal Doors & Frames, INC. | Kenner | LA | — | ◇ UNVERIFIED |
| BNB N J Iron Wks | Cudahy | CA | — | ◇ UNVERIFIED |
| BLBoardman, LLC | Wichita | KS | — | ◇ UNVERIFIED |
| BEBobby Emery Welding | Clayton | NM | — | ◇ UNVERIFIED |
| BMBob Murphy, INC. | Vestal | NY | — | ◇ UNVERIFIED |
| BEBobro Engineering | Goleta | CA | — | ◇ UNVERIFIED |
| BSBob Sandlin CO. | Dallas | TX | — | ◇ UNVERIFIED |
| BIBob's Iron, INC. | Oakland | CA | — | ◇ UNVERIFIED |
| BIBob's Iron, INC. | Oakland | CA | — | ◇ UNVERIFIED |
| BIBob's Iron, INC. | Oakland | CA | — | ◇ UNVERIFIED |
| BMBodecor Metal Finishing INC | Eagan | MN | — | ◇ UNVERIFIED |
