PP-R/AL/PP-R
Rigid PP-R composite with aluminium layer for low linear expansion.
Overview
PP-R/AL/PP-R Composite Pipe
PP-R pipe reinforced with an aluminium layer and joined by socket heat fusion. Low thermal expansion and high rigidity suit exposed hot-water lines and risers.
- Outer layer · PP-RProtects the pipe and carries the marking and colour.
- Adhesive layerBonds plastic to aluminium so the layers never separate.
- Aluminium layerBlocks oxygen, holds the bent shape and takes the pressure.
- Adhesive layerBonds the aluminium to the inner pipe.
- Inner layer · PP-RSmooth, corrosion-free and hygienic in contact with water.
Sizes
Every catalogue size
Open a model for its own page. Custom wall and aluminium thickness are made to your drawing.
| Model | OD × wall (mm) | Al layer (mm) | Pressure | Packing | Inquiry |
|---|---|---|---|---|---|
| SL-PPP-2034 | 20 × 3.4 | 0.20 | PN20 | 4 m straight lengths | |
| SL-PPP-2542 | 25 × 4.2 | 0.20 | PN20 | 4 m straight lengths | |
| SL-PPP-3254 | 32 × 5.4 | 0.25 | PN20 | 4 m straight lengths | |
| SL-PPP-4067 | 40 × 6.7 | 0.30 | PN20 | 4 m straight lengths | |
| SL-PPP-5083 | 50 × 8.3 | 0.35 | PN20 | 4 m straight lengths | |
| SL-PPP-63105 | 63 × 10.5 | 0.40 | PN20 | 4 m straight lengths | |
| SL-PPP-75125 | 75 × 12.5 | 0.45 | PN20 | 4 m straight lengths |
Technical data
Performance and installation
- Designed with reference to
- ISO 15874 · GB/T 18742
- Application class
- Class 1 / Class 2 @ 10 bar
- Max. working temperature
- 95 °C (70 °C continuous)
- Short-term max. temperature
- 110 °C
- Nominal pressure
- PN20 (2.0 MPa @ 20 °C)
- Aluminium layer welding
- Overlap-welded aluminium layer
- Thermal conductivity
- 0.24 W/(m·K)
- Linear expansion
- 0.03 mm/(m·K)
- Bending radius
- Rigid pipe — use fittings for changes of direction
- Colours
- White, green, grey
- Supply form
- 4 m straight lengths
- Joining
- Socket heat fusion with PP-R fittings (strip the aluminium layer before fusion)
Applications
Where it is used
FAQ
Common questions
Do you supply fittings?
We specialize exclusively in manufacturing multilayer composite pipes (coils and straight lengths) and do not supply fittings directly. Pipes use metric OD and wall-thickness specifications, with nominal inner diameters listed on product pages to help you select the corresponding connection system for your market.
What is the difference between overlap-welded and butt-welded?
Overlap-welded aluminium has a narrow overlapping seam; butt-welded aluminium is joined edge to edge, giving an even wall and round profile. Butt-welded models end in -B.
How is the pipe marked?
Each pipe carries the model code, size, production date and batch number, so every length can be traced to its production record.
Tell us what you need.
Sizes, quantities and your market. You get a quotation within 24 hours.