- Hydro Fitting Mfg Corp
- Hygrade Metal Moulding
- Ideal Steel Inc
- Image Point
- Images On Metal Inc
- Imagineering Machine Inc
- Imhauser Corp
- Impax Metal Products
- Imperial Calumet
- Impressions Metal Works
- Impulse Training Systems
- Ims Metal Fab
- In Tolerance
- Indiana Metal Craft Inc
- Indianapolis Badge & Nameplate
- Industrial Chrome Inc
- Industrial Fabcon Inc
- Industrial Group
- Industrial Ladder Co
- Industrial Manufacturing & Mac
- Industrial Metal Prod Corp Imp
- Industrial Rebuilders Corp
- Industrial Services Inc
- Industrial Systems Corp
- Infra Corp
- Infra Corp
- Innovative Creations Inc
- Innovative Metal Design LLC
- Innovative Metal Products
- Insul Basket Inc
- Insulated Metal Products
- Integral Parts Machining Co
- Integrated Metal Tech Inc
- Integrity Iron Works
- International Metal Corp
- International Roll Forms Inc
- Interstate Fittings Inc
- Interstate Tool & Mfg Co
- Interstate Welding & Fab Inc
- Iowa Metal Products Inc
- IQL Corp
- Iron Works By Cropsey Inc
- Iron Works By Cropsey Inc
- Ironcraft & Security By Divine
- Ironfire Iron Work
- Ironsmith
- Island Master Metal Inc
- Ithaca Manufacturing Co
- J & D Weber Tool Inc
- J & E Metal Fabricators Inc
- J & E Metal Sales
- J & M Fab Metals
- J & M Fab Metals
- J & M Wrought Iron
- J & N Metal Products Inc
- J & R Metal Fabrication
- J & S Creative Metal Works
- J & S Metal Finishing
- J & W Mfg Inc
- J B Design
- J B Metal Products Inc
- J G Fabrication
- J K Metal
- J L Clark Inc
- J M Welding
- J R Metal Frame
- J R Metal Ornamental
- J S Metal Polish
- J T Chapman Co
- J W Industries Inc
- J Weeks Metalsmith Inc
- JACC Inc
- Jackson Metalworks Inc
- Jag Metal Spinning Inc
- Jag Metal Works
- Jagco Industries
- JAH Machine Inc
- Jamestown Metal Marine
- Jamestown Metal Mrne Sales Inc
- Jayron Fabrication
- JCI Metal Products
- Jebco Inc
- JEF Precision Sheet Metal
- Jenne Industries Inc
- Jenson Tool & Mfg Co
- Jersey Street Metal Works Inc
- Jimmy Howell Co
- JMC USA Inc
- JMS Metal Svc Inc
- Joe's Metal Finishing
- Joe's Metal Finishing
- Joe's Welding Svc
- Johnson Industries
- Johnson Plastics
- Johnson Restaurant Supply Corp
- Johnson Screens
- Joma Inc
- Jones Iron & Metal Inc
- Jose's Wrought Iron
- Joyner Welding & Metal Fab
- Jp Metal American Inc
- Jp Metal American Inc
- K & L Grinding & Machining Inc
- K & M Weld Wrought Iron
- K & W Mfg Co
- K C Metal Works
- K H Enterprises Inc
- K Manufacturing Inc
- K-Met Industries
- K-P Welding & Fabricating Inc
- Kaestner Co
- Kanawha Manufacturing Co
- KCS Metal Products
- KEA Metal Ring Co
- KEES Inc
- Keicher Metal Arts
- Keicher Metal Arts
- Kelco LLC
- Kelley Metal Sales
- Kelly Tool & Mfg Co
- Ken's Custom Woodworking
- Kenck's Welding & Machine Shop
- Kenna Metal FSS
- Kenron Manufacture
- Kermco De Haai
- Kester's Welding
- KEWL Metal Inc
- Kexby House
- Keystone
- Keystone Metal Products
- Kiesler Machine Shop
- Kilburg Welding & Fabricating
- Kimes Metal
- Kin Products Inc
- King Manufacturing Co
- Kingsbery Manufacturing Corp
- Kitson Manufacturing Inc
- KLK Inc
- KLK Inc
- Knaack Manufacturing Co
- Knaack Manufacturing Co
- Knaack Manufacturing Co
- Kobach Metal Roof & Wall Syst
- KOBE Steel USA Holdings Inc
- KOBE Steel USA Holdings Inc
- Kocsis Brothers Machine Co
- Kodiak Metals & Supply Inc
- Koester Metals Inc
- Koronis Fabricating Inc
- Kurt Voss Metals Inc
- Kurt Voss Metals Inc
- Kustom Kraft Iron Inc
- Kustom Metal Works
- Kustom Metal Works
- L & B Metal Fabrication Inc
- L & M Maufacturing
- L & M Steel & Mfg
- L & S Fabrication Inc
- L C Metal Works
- L N Aerospace Inc
- L N Aerospace Inc
- L T Metal Fabrication
- LA Deau Mfg Co
- LA Metal T
- Lackey Sheetmetal
- Ladder Industries
- Ladder Industries
- Lafayette Steel
- Lai Intl
- Lake City Metal Works
- Lake Forest Metal Work
- Lakeview Metal Works
- Lamasi Iron Works
- Lane Metal Svc
- Laney Co
- Lanford Welding & Mechanical
- Larry Peterson & Son Mfg Inc
- Larry Peterson & Son Mfg Inc
- Larsen's Manufacturing Co
- Laser Specialists Inc
- Laser Specialties
- Laseter Inc
- Laseter Inc
- Lathemaster Metal Working Tls
- Launer Voss Steel Fabricators
- LDC Enviro Corp
- Leader Engineering Fabrication
- Ledco Metal Work Inc
- Leggett & Platt Inc
- Leonard Metal Art Works
- Leonard Paper Co
- Leppke Metal Buildings
- Lester Metal Inc
- Let-R-Sign
- Lewis Engineering Co
- Lewis Unique Wrought Iron
- Li Metal Systems
- Liberty Fence Co
- Liberty Research Co Inc
- Lifetime Gate Co
- Light Metal Forging
- Lilly Machinery Inc
- Linn Machine Works
- Linn Machine Works
- Liphing Metal Mfr America Inc
- Liphing Metal Mfr America Inc
- Lippert Components Inc
- Liquid Metal Coating
- Liquid Metal Products Inc
- Liquidmetal Technologies
- Liquidmetal Technologies
- Litco Inc
- Little Buildings Inc
- Logamann Bros Co
- Loma Linda-Cherrco
- Long's Wheel & Rim Inc
- Los Angeles Metal Refinishing
- Lowell Industries Inc
- LSI Metal Fab Pro Armor
- LTC Roll & Engineering Co
- LTD Industries Inc
- LTD Industries Inc
- LTD Industries Inc
- Lucas Metal Distributing
- Lucasey Manufacturing
- Lyford Enterprises
- Lyford Enterprises
- Lyman-Morse Fabrication
- Lyon Metal Products Dealer
- M & F Metal Polishing
- M & J Industries Inc
- M & M Mfg Co
- M & M Mfg Inc
- M & M Welding & Fabricators
- M B & L
- M G Metal Fabricators
- M Hastey Construction Co
- M S Hollow Metal Wholesale
- M S Metal Kustom Equipment
- M W Metal
- Maasch Metal & Fabrication
- Maceo Metal & Supply
- Machine Center
- Machine Design & Fabrication
- Mack Iron Works Co
- Macleod Metal Works
- Macsteel Service Ctr USA
- Madar Metal Fabricating LLC
- Madison Machine Shop
- Magna Card Inc
- Magnetic Specialties Corp
- Magnets For Industry
- Maguire & Strickland Refining
- Mahoneys Fabrication Inc
- Makers Co
- Mallory Metal Products
- Manco Manufacturing Co
- Mandala Creations In Metal
- Mandall Armor Design & Mfg Inc
- Mandall Armor Design & Mfg Inc
- Maniac Metal Works
- Maniac Metal Works
- Manown Engineering Co Inc
- Mansfield Industries
- Manufab
- Maples Forge
- Marchant Ladders Inc
- Mario Jason Originals
- Marion Metal Products Inc
- Marion Metal Works
- Marksman Metals Co Inc
- Martin Manufacturing
- Martin Metalfab Inc
- Mas Metal
- Mason Corp
- Masonry Arts
- Masonry Arts
- Masterson Metal Products
- Material Technologies Inc
- Materials Processing
- Mathison Metalfab Inc
- Matrix
- Mauser Corp
- May Fabricating Co
- May Steel Corp
- Mayville Engineering Co Inc
- MBH Building Solutions Inc
- MBH Metal Works LLC
- MBH Metal Works LLC
- Mc Brown's Industries Inc
- Mc Connell Custom Design
- Mc Crarys Inc
- Mc Elroy Metal Svc Ctr
- Mc Gee Metal Fabrication
- Mc Hone Metal Fabricators Inc
- Mc Hone Metal Fabricators Inc
- Mc Welco Products
- Mc Welco Products
- Mcelroy Metal
- MCR Metal Sales
