Layher INC | Houston | TX | — | ● ACTIVE |
| LMLb Metals LLC | Harvey | IL | 100–499 | ● ACTIVE |
| LSLegion Shielders LLC | Lodi | NJ | — | ● ACTIVE |
Liberty Elevator Corporation | Paterson | NJ | — | ● ACTIVE |
Lido Designs INC. | Brookfield | CT | — | ● ACTIVE |
Lightning Eliminators & Consultants, INC. | Boulder | CO | — | ● ACTIVE |
| LELincoln Electric Automation Fort Loramie | Fort Loramie | OH | 100–499 | ● ACTIVE |
| LMLlb Metal Fabrication Limited Liability Company | Honolulu | HI | — | ● ACTIVE |
Lonestar Metalcraft LLC | Bryan | TX | — | ● ACTIVE |
Lonestar Tactical Buildings LLC | Hempstead | TX | — | ● ACTIVE |
Longhorn Fab Shop LLC | Brookville | OH | — | ● ACTIVE |
Lotec INC | Dallas | TX | — | ● ACTIVE |
Lsc Industries LLC | Jamestown | OH | — | ● ACTIVE |
L. T. Gordon Fence CO INC | Garden City Park | NY | — | ● ACTIVE |
Luna's Welding & Construction L.l.c. | Ayden | NC | — | ● ACTIVE |
Lux Iron Company LLC | Draper | UT | — | ● ACTIVE |
Lwe, INC | Meadville | PA | — | ● ACTIVE |
Machina Labs INC | Chatsworth | CA | — | ● ACTIVE |
Madden Fabrication, INC | Portland | OR | — | ● ACTIVE |
Madoors LLC | Hialeah | FL | — | ● ACTIVE |
Mad River Fabricating, LTD. | Springfield | OH | — | ● ACTIVE |
Magna Steel Sales, INC. | Beacon Falls | CT | — | ● ACTIVE |
Main Made Studios LLC | Atlantic Beach | FL | — | ● ACTIVE |
Mainstream Waterjet, LLC | Loveland | OH | — | ● ACTIVE |
Maker Ship, INC | Hudson | NY | — | ● ACTIVE |
Mariani Metal Fabricators Usa, INC. | Washington | NJ | — | ● ACTIVE |
Marquez Wrought Iron INC | Las Cruces | NM | — | ● ACTIVE |
Martin Steel Fabrication, INC. | Mascoutah | IL | — | ● ACTIVE |
Material Storage Systems INC | Humble | TX | — | ● ACTIVE |
Mchone Metal Fabricators, INC. | Terrell | TX | — | ● ACTIVE |
Mckenzie Productions. | Atascadero | CA | — | ● ACTIVE |
Mckeon Door East, INC. | Bellport | NY | — | ● ACTIVE |
Mct Brattberg INC. | Spring | TX | — | ● ACTIVE |
Mcw Certified Welding LTD | Delta | OH | — | ● ACTIVE |
Meadow Burke, LLC | Riverview | FL | — | ● ACTIVE |
Me Bridge Solutions LLC | South Boston | VA | — | ● ACTIVE |
| MCMetal Components Plant 4 | Plainwell | MI | 20–99 | ● ACTIVE |
Metals INC | Bedford | OH | — | ● ACTIVE |
Meyer Utility Structures, LLC | Memphis | TN | — | ● ACTIVE |
Miami Nation Stronghold, LLC | Reston | VA | — | ● ACTIVE |
| MCMichael Cregan | Ojai | CA | — | ● ACTIVE |
| MGMichael Graham Racing LLC | Titusville | FL | — | ● ACTIVE |
| MSMichelman Steel Enterprises LLC | Bethlehem | PA | 20–99 | ● ACTIVE |
| MSMidwest Steel Works, INC | Lincoln | NE | 20–99 | ● ACTIVE |
Miller Products & Supply CO | Iron Mountain | MI | — | ● ACTIVE |
Miller Welding & Machine CO | Brookville | PA | — | ● ACTIVE |
Minestone Construction LLC | Edison | NJ | — | ● ACTIVE |
Mjc-manufacturing LLC | Fargo | ND | — | ● ACTIVE |
M & M Business Ventures LLC | Hurricane | UT | — | ● ACTIVE |
Mobil Steel International, INC. | Houston | TX | — | ● ACTIVE |
Mollet Machinery LLC | Glen Carbon | IL | — | ● ACTIVE |
Monnig Welding, LLC | Cincinnati | OH | — | ● ACTIVE |
Montoya's Ornamental Ironworks LLC | Tucson | AZ | — | ● ACTIVE |
Mooresville Welding INC | Mooresville | IN | — | ● ACTIVE |
Motis, LLC | Germantown | WI | — | ● ACTIVE |
Mrw Fabrication LLC | Independence | MO | — | ● ACTIVE |
Msi Fab LLC | Newark | DE | — | ● ACTIVE |
Mw Design Workshop, INC. | Keizer | OR | — | ● ACTIVE |
Nasir and Associates LLC | Baltimore | MD | — | ● ACTIVE |
| NMNassau Metal Works LLC | Yulee | FL | — | ● ACTIVE |
| NCNexgen Composites LLC | Summerville | SC | 20–99 | ● ACTIVE |
Nicomedia Steel LLC | Sterling | VA | — | ● ACTIVE |
Nmb Manufacturing LLC | Bixby | OK | — | ● ACTIVE |
North Alabama Fabricating Company, INC | Birmingham | AL | — | ● ACTIVE |
| NANorth American Manufacturing CORP | Medford | NY | — | ● ACTIVE |
| NFNortheast Fabricators & Mechanical Services, LLC | Dalton | MA | — | ● ACTIVE |
Northern Garden Supply | Chehalis | WA | — | ● ACTIVE |
Northwest Steel Fabrication, INC. | Deer Park | WA | — | ● ACTIVE |
Ns Metal Structures & Design, INC | Costa Mesa | CA | — | ● ACTIVE |
Nuclear Alloys Corporation | Wilson | NY | — | ● ACTIVE |
Nucor Corporation | Brigham City | UT | — | ● ACTIVE |
Nucor Rebar Fabrication Seattle INC. | Tacoma | WA | — | ● ACTIVE |
Nucor Rebar Fabrication South LLC | Milford | MA | — | ● ACTIVE |
Nusource, LLC | Alexandria | VA | — | ● ACTIVE |
Octal Corporation | Teaneck | NJ | — | ● ACTIVE |
Omega Metalworks LLC | Colorado Springs | CO | — | ● ACTIVE |
Orange County Ironworks LLC | Montgomery | NY | — | ● ACTIVE |
Oraway Engineering INC | Coachella | CA | — | ● ACTIVE |
Origin Engineering LLC | Johnstown | CO | — | ● ACTIVE |
Pacific Mobile Welding and Fabrication, LLC | Hilo | HI | — | ● ACTIVE |
PC Iron, INC | Spring Valley | CA | — | ● ACTIVE |
Pechter, INC | Altoona | PA | — | ● ACTIVE |
Peerless Mfg CO | Addison | TX | — | ● ACTIVE |
Pennfab INC | Morrisville | PA | — | ● ACTIVE |
| PMPenn Metal Fabricators INC | Ebensburg | PA | — | ● ACTIVE |
Perforated Panels | Pacoima | CA | — | ● ACTIVE |
Peter Kaczmarczyk | Angola | NY | — | ● ACTIVE |
Pioneer Welding Services LLC | Bellevue | NE | — | ● ACTIVE |
Pole-tech Co., INC. | East Setauket | NY | — | ● ACTIVE |
| PMPonderosa Metal Works LLC | Safford | AZ | — | ● ACTIVE |
| PKPond King INC | Gainesville | TX | — | ● ACTIVE |
Pono Industries LLC | Kailua | HI | — | ● ACTIVE |
| PBPrecision Build Solutions LLC | Gibsonton | FL | — | ● ACTIVE |
Property Armor, INC. | Jacksonville | FL | — | ● ACTIVE |
Puma Services INC | Cheyenne | WY | — | ● ACTIVE |
Qb Fabrication & Welding INC | Clackamas | OR | — | ● ACTIVE |
Quality Stainless Products INC. | Maryland Heights | MO | — | ● ACTIVE |
Quality Welding & Fabrication, LLC | Lima | OH | — | ● ACTIVE |
Rainier Welding Partners, LLC | Anacortes | WA | — | ● ACTIVE |
| RMRampage Manufacturing LLC | Klamath Falls | OR | — | ● ACTIVE |