PE-AL-PE
Polyethylene layers with aluminium core for cold water and compressed air.
Overview
PE-AL-PE Multilayer Pipe (cold water & compressed air)
Economical five-layer pipe with high-density polyethylene inner and outer layers. Designed for cold-water distribution, compressed air and other low-temperature service lines.
- Outer layer · HDPEProtects 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 · HDPESmooth, 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-PEP-1620 | 16 × 2.0 | 0.20 | 10 bar | 100 / 200 m coils | |
| SL-PEP-2020 | 20 × 2.0 | 0.25 | 10 bar | 100 / 200 m coils | |
| SL-PEP-2525 | 25 × 2.5 | 0.30 | 10 bar | 50 / 100 m coils | |
| SL-PEP-2630 | 26 × 3.0 | 0.30 | 10 bar | 50 / 100 m coils | |
| SL-PEP-3230 | 32 × 3.0 | 0.40 | 10 bar | 50 / 100 m coils |
Technical data
Performance and installation
- Designed with reference to
- GB/T 18997.1 (cold-water type)
- Application class
- Cold water ≤ 40 °C @ 10 bar
- Max. working temperature
- 60 °C
- Nominal pressure
- 10 bar (1.0 MPa)
- Aluminium layer welding
- Overlap-welded aluminium layer
- Thermal conductivity
- 0.45 W/(m·K)
- Linear expansion
- 0.025 mm/(m·K)
- Bending radius
- ≥ 5 × OD by hand, ≥ 3 × OD with a bending spring (16–32 mm)
- Colours
- Blue, black or white
- Supply form
- 16–20 mm: 100 / 200 m coils · 25–32 mm: 50 / 100 m coils
- Joining
- Press or compression fittings for multilayer pipe
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.