- Cross-linked polyethylene inner pipe (PE-XB)
- Bonding layer connecting the inner pipe to the aluminium pipe
- Laser-welded alminium pipe, thickness min 0.3 mm
- Bonding layer connecting the outer pipe to the aluminium pipe
- Cross-linked polyethylene outer pipe
Gerpex Pex-Alum-Pex
| Code | Dimensions |
| 28106000 | 16×2 | 100 LM |
| 28106010 | 16×2 | 200 LM |
| 28106050 | 16×2 | 500 LM |
| 28102318 | 18×2 | 100 LM |
| 28106004 | 20×2 | 100 LM |
| 28106006 | 26×3 | 50 LM |
| 28106008 | 32×3 | 50 LM |
Gerpex Pex-Alum-Pex Insulated
| Code | Dimensions |
| 28105100 | 16×2 6 mm | 100 LM |
| 28102338 | 18×2 6 mm | 100 LM |
| 28105106 | 20×2 9 mm | 50 LM |
| 28102882 | 26×3 9 mm | 50 LM |
| 28102576 | 32×3 9 mm | 50 LM |
