Metal Ball Manufacturers
| Frederick Steel Co (Cincinnati, OH) |
| Fry Technologies (Altoona, PA) |
| Grant, Louis A Inc (Export, PA) |
| Harsco Corp (Camp Hill, PA) |
| Hawk Corp (Cleveland, OH) |
| Heckett MultiServ (Coatesville, PA) |
| High Performance Tube Inc (Brunswick, GA)
Manufacturer |
| IPSCO (Roscoe, PA) |
| Ispat Inland Inc (Chicago, IL) |
| Kalamazoo Steel Processing Inc (Kalamazoo, MI) |
| Kane Steel Co (Pottsville, PA) |
| Kenwal Steel Corp (Dearborn, MI) |
| Keywell LLC (Chicago, IL) |
| Koppers Industries Inc (Pittsburgh, PA) |
| Lee Industries Inc (Philipsburg, PA) |
| Lippert Components Inc (Naples, FL) |
| Loveman Steel Corp (Bedford Heights, OH) |
| LTV Corp (Warren, OH) |
| LTV Steel Co (East Chicago, IN) |
| MACSTEEL (Jackson, MI) |
| Main Steel Polishing Co Inc (Bartlett, IL) |
| Marmon/Keystone (Temperance, MI) |
| Merit Brass Co (Richmond Hts, OH) |
| Metaldyne Sintered Components (Saint Marys, PA) |
| Metals USA (Germantown, WI) |
