| Vertretung | Gebiet |
| Armacell |
26, 27, 28, 49
|
| Dallmer |
26, 27, 28, tlw. 48, tlw. 49
|
| Duka |
26, 27, 28, tlw. 49
|
| Fränkische Rohrwerke |
26, 27, 28, 32, 33, 48, 49, 58, 59
|
| Henrad/Stelrad |
26, 27, 28, 32, 33, 48, 49
|
| SYR |
26, 32, 33, 48, 49, 59
|
