- Midwest Pipe & Steel Inc
- Midwest Steel Supply Co
- Midwest Trading
- Midwestern Millwright Inc
- Milestone Metal Co
- Milestone Metal Co
- Mill Direct
- Mill Metals Supply Co
- Mill Steel Co
- Mill Steel Co
- Miller's Steel Div
- Millicare Of Central & S Texas
- Millicare Of Central & S Texas
- Mims Steel Co
- Minnesota Iron & Metal Co
- Mirror Metals
- Miss-Lou Steel Supply Inc
- MISSCO
- Mission Metals
- MJV Metals Co
- MMFX Steel Corp Of America
- Modesto Steel Co Inc
- Modoc Steel & Supply LLC
- Mokes Steel Inc
- Monarch Machine
- Monarch Machine
- Monarch Metals Inc
- Monarch Metals Inc
- Monarch Stainless
- Monarch Stainless Inc
- Monarch Steel Co
- Mont Levine Inc
- Montco Metals Inc
- Morgan Hauser Steel Inc
- Morgan Pipe & Steel
- Morgan Steel Inc
- Morin Steel Inc
- Morris Industries Inc
- Morrison Tank & Vault
- Morse Steel Svc
- Morse Steel Svc Ctr
- Mose Levy Co Inc
- Moses Lake Steel Supply Inc
- Mountain Home Steel Supply Inc
- Mountaineer Metal Products-WV
- MPJ Enterprises LTD
- MST Steel Corp
- MST Steel Corp
- Mt Pleasant Salvage & Steel Co
- MTK Industries Inc
- Mueller Inc
- Mueller Metals Inc
- Muirfield Metals
- Multalloy
- Multi Metals
- Mumford Sheet Metal Works
- Murphy & Nolan Inc
- Murphy & Nolan Inc
- Murray International Metals
- Murray International Metals
- Mustang Metal
- Mustang Metals LLC
- Myers Metal Deck
- Myers Metal Deck
- N B Handy
- Nafta Steel & Pipe Inc
- Nakayama Evergreen Metals Inc
- Namasco
- Namasco
- Namasco
- Namasco
- Namasco Corp
- Namasco Corp
- Namasco Corp
- Namasco Corp
- Namasco Corp
- Namasco Corp
- Namasco Corp
- Namasco Corp
- Namasco Corp
- Namasco Corp
- Namasco Corp
- Namasco Corp
- Namasco Steel
- Namasco Steel
- Namasco Steel Warehousing Div
- Nance Steel Corp
- Nance Steel Corp
- Nasco
- Nashville Steel Corp
- Natco Alloys Inc
- National Material CO
- National Material CO
- National Material CO
- National Speciality Cutlery
- National Specialty Alloys
- National Specialty Alloys
- National Specialty Alloys
- National Specialty Alloys Inc
- National Steel Supply Inc
- National Structural Steel
- Nebetco Stainless Inc
- Neill-LA Vielle
- New Concepts Inc
- New Frontier Svc LP
- New Jersey Steel Corp
- New Orleans Steel & Equipment
- New Process Steel
- New Process Steel Corp
- New Steel Div
- Newberg Steel & Fabrication
- Newburg Steel
- Newton Steel
- Newton Steel
- Nichols Steel
- Nielco Steel Warehouse Inc
- Nielco Steel Warehouse Inc
- Nightingale Metals Inc
- Nightingale Metals Inc
- Nisshin USA Inc
- Nobel Metal Processing Inc
- Nobel Steel Co Inc
- Noble Metals
- Noble Steel Inc
- Norfolk Iron & Metal
- Norfolk Iron & Metal Co
- Norfolk Iron & Metal Co
- Norfolk Iron & Metal Co
- North American Metals Inc
- North American Steel
- North American Steel Alliance
- North American Steel Alliance
- North American Steel Co
- North Atlantic Steel Co
- North Coast Alloy
- North Coast Metal Mart LLC
- North Second Street Steel
- North Suburban Steel
- North Suburban Steel
- Northeast Industrial Tech Inc
- Northeast Steel Corp
- Northern Illinois Steel Supply
- Northern Metals & Supply
- Northern Plains Steel Co
- Northern State Steel
- Northrop Grumman Ship Systems
- Northshore Metals
- Northshore Supply
- Northside Manufacturing
- Northside Steel & Pipe Co
- Northstar Steel & Aluminum Inc
- Northwest Steel & Pipe Inc
- Northwest Steel & Pipe Inc
- Northwest Welding Supply
- Northwest Welding Supply
- Norton Metals Inc
- Nova Steel
- Nova Steel Inc
- Nowell Steel
- Nowell Steel & Supply Co Inc
- NRG Metals
- Nucor Cold Finish
- Nucor Steel
- Nw Metal Deck Inc
- O H & R Special Steels Co
- O'Connor Steel & Supply Co
- O'Donnell Steel Co
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Inc
- O'Neal Steel Weldment Div
- O'Neal Too
- Ohio Steel Sheet & Plate
- Ok Steel & Pipe Corp
- Okia Inc
- Oklahoma City Steel LLC
- Oliver Steel Plate Co
- Olympic Metals Inc
- Olympic Mfg Group Inc
- Olympic Mfg Group Inc
- Olympic Steel Co
- Olympic Steel Inc
- Olympic Steel Minneapolis Inc
- Omega Metals Corp
- Omega Sligo
- Omega Steel Inc
- Omni Steel Corp
- One Stop Steel Corp
- Oneal Steel
- Orange Steel
- Ornamental Iron Supply
- Oswego Tool & Steel Co
- Otsego Iron & Metal
- Otto Steel
- Oxy Plaz Plate Inc
- P & A Metal Svc
- P & R Metals
- P & S Metals & Supply Corp
- P C Noto Sales Inc
- P M & E Structures Inc
- P Miller Steel Inc
- P-M Tube & Specialty
- Pabco Steel
- Pacemaker Steel & Piping Co
- Pacemaker Steel & Piping Corp
- Pacesetter Steel Svc Inc
- Pacific International Steel
- Pacific Machinery & Tool Steel
- Pacific Metal Co
- Pacific Metal Co
- Pacific Metal Co
- Pacific Plus Intl
- Pacific Sales Co
- Pacific Security Fence Co
- Pacific Steel
- Pacific Steel
- Pacific Steel
- Pacific Steel
- Pacific Steel
- Pacific Steel
- Pacific Steel
- Pacific Steel
- Pacific Steel
- Pacific Steel
- Pacific Steel & Recycling
- Pacific Steel & Recycling
- Pacific Steel & Recycling
- Pacific Steel & Recycling
- Pacific Steel & Recycling
- Pacific Steel & Recycling
- Pacific Steel & Recycling
- Pacific Steel & Recycling
- Pacific Steel & Recycling
- Pacific Steel & Recycling
- Pacific Steel & Recycling
- Pacific Steel Corp
- Pacific Welding Supplies Inc
- Paco Steel & Engineering Corp
- Pana Iron Store Co
- Pana Iron Store Co
- Pana Iron Store Co
- Panasteel
- Pappas Stainless & Alloy Inc
- Par's Realty
- Paragon Steel
- Parkdale International USA
- Parker & Assoc Metal Sales
- Parker Steel Co
- Passaic County Steel Svc
- Patriarche & Bell Inc Steel
- Patriot Steel
- Patriot Steel & Tube Inc
- Patriot Steel Co
- Patriot Steel Co LLC
- Patriot Steel Inc
- Pattern Metals
- Patton Steel
- Patton's Metal Working
- Patton's Metal Working Sltns
- Patton's Metal Working Sltns
- Pauley Brothers Equipment Co
- PDM Steel Svc Ctr
- PDM Steel Svc Ctr Inc
- PDM Steel Svc Ctr Inc
- PDM Steel Svc Ctr Inc
- PDM Steel Svc Ctr Inc
- Peerless Steel
- Peerless Steel Co
- Peerless Steel Of Saginaw
- Pennsylvania Steel Co Inc
- Penrose Steel & Tubing
- Penrose Steel & Tubing
- Perfect Supply Co
- Perforated Metals Plus
- Performance Metals Inc
- Performance Steel
- Perham Steel & Welding
- Perlen Steel Corp
- Permamet Metals Svc Ctr
- Pernell's Steel & Machine Svc
- Petersen Steel Co
- Peterson Co
- Peterson Steel Corp
- PGG Frande Ronde Steel
