Steel Service Centers
| Nucor Wire Products-Pa (New Salem, PA)
Primarily Serving: Pittsburgh, PA - Youngstown, OH - Canton, OH - Charles Town, WV |
| Nycon (Mercer, PA)
Primarily Serving: Youngstown, OH - Pittsburgh, PA - Erie, PA - Mentor, OH |
| Nycon Inc (Westerly, RI)
Primarily Serving: Warwick, RI - Cranston, RI - Providence, RI - Fall River, MA |
| O H & R Special Steels Co (Northborough, MA)
Primarily Serving: Worcester, MA - Framingham, MA - Waltham, MA - Newton, MA |
| Oceanview Sun & Screen (Pompano Beach, FL)
Primarily Serving: Coral Springs, FL - Margate, FL - Coconut Creek, FL - Deerfield Beach, FL |
| Ocs of Virginia Inc (Powhatan, VA)
Primarily Serving: Richmond, VA - Lynchburg, VA - Newport News, VA - Suffolk, VA |
| Ogden Aluminum (Cape Coral, FL)
Primarily Serving: North Fort Myers, FL - Fort Myers, FL - Port Charlotte, FL - North Port, FL |
| Okeechobee Pipe & Fittings (Okeechobee, FL)
Primarily Serving: Port Saint Lucie, FL - Jupiter, FL - Palm Bay, FL - Wellington, FL |
| Olin Brass Fineweld Tube (Cuba, MO)
Primarily Serving: O Fallon, MO - Saint Peters, MO - Saint Charles, MO - Saint Louis, MO |
| Oliver Fence Co (New Bedford, MA)
Primarily Serving: Fall River, MA - Taunton, MA - Warwick, RI - Pawtucket, RI |
| Olympic Steel Co (Minneapolis, MN)
Primarily Serving: Minnetonka, MN - Saint Paul, MN - Eden Prairie, MN - Burnsville, MN |
| Olympic Steel Co (Philadelphia, PA)
Primarily Serving: Camden, NJ - Levittown, PA - Wilmington, DE - Trenton, NJ |
| Omega Steel Inc (Wayland, MI)
Primarily Serving: Wyoming, MI - Grand Rapids, MI - Kalamazoo, MI - Battle Creek, MI |
| Omni Cable (O Fallon, MO)
Primarily Serving: Saint Peters, MO - Saint Charles, MO - Florissant, MO - Saint Louis, MO |
| One Stop Aluminum Products (Ormond Beach, FL)
Primarily Serving: Daytona Beach, FL - Port Orange, FL - Palm Coast, FL - Deltona, FL |
| One Stop Steel Corp (Saint Louis, MO)
Primarily Serving: Florissant, MO - Saint Charles, MO - Saint Peters, MO - O Fallon, MO |
| O'Neal Steel Inc (Evansville, IN)
Primarily Serving: Owensboro, KY - Bowling Green, KY - Bloomington, IN - Louisville, KY |
| O'Neal Steel Inc (Jacksonville, FL)
Primarily Serving: Gainesville, FL - Palm Coast, FL - Ocala, FL - Daytona Beach, FL |
| O'Neal Steel Inc (Mobile, AL)
Primarily Serving: Pensacola, FL - Gulf Breeze, FL - Gulfport, MS - Hattiesburg, MS |
| O'Neal Steel Inc (Dallas, TX)
Primarily Serving: Irving, TX - Mesquite, TX - Richardson, TX - Garland, TX |
| O'Neal Steel Inc (Breaux Bridge, LA)
Primarily Serving: Lafayette, LA - Baton Rouge, LA - Lake Charles, LA - Kenner, LA |
| O'Neill Metal Forming (Walled Lake, MI)
Primarily Serving: Novi, MI - West Bloomfield, MI - Farmington, MI - Waterford, MI |
| Oregon Wire Products Llc (Portland, OR)
Primarily Serving: Beaverton, OR - Clackamas, OR - Vancouver, WA - Gresham, OR |
| Organ Wire Prod Llc (Portland, OR)
Primarily Serving: Beaverton, OR - Clackamas, OR - Vancouver, WA - Gresham, OR |
| Ozark Die Casting (Saint Clair, MO)
Primarily Serving: O Fallon, MO - Saint Peters, MO - Saint Charles, MO - Saint Louis, MO |
