Material & Specifications

---

Key Advantages

• Reduced Thermal Expansion – Linear expansion coefficient of approximately 0.035 mm/(m·K), up to five times lower than standard PPR pipes. Enables stable installations with fewer compensators, ideal for long vertical risers and exposed piping.

• Full Oxygen Barrier – The continuous aluminum layer completely blocks oxygen diffusion, preventing corrosion of metal components (boilers, pumps, valves, radiators) in heating systems and extending overall system lifespan.

• Enhanced Pressure & Temperature Resistance – Aluminum reinforcement provides superior strength under pressure. Suitable for continuous operation up to 70°C, with transient tolerance up to 95°C.

• Shape Retention – Holds its form after bending, allowing cleaner installations with fewer fittings. Reduces material costs and potential leak points.

• Corrosion & Chemical Resistance – Inner and outer PPR layers protect against electrochemical corrosion, scale buildup, and chemical attack. No rust or scaling like metal pipes.

• Low Thermal Conductivity – Reduces heat loss in hot water lines and prevents condensation on cold water lines, improving energy efficiency.

• Lightweight & Easy to Install – Significantly lighter than metal pipes. Installed using standard socket fusion welding with specialized stripping tools.

---

Structure

---

Applications

• Hot and cold water supply in residential and commercial buildings

• Radiator and underfloor heating systems

• HVAC chilled water lines

• High-rise building risers

• Solar water heating systems

• Compressed air systems (where compatible)

• Industrial fluid transport

---

Connection Method

---

System Components

The complete PPR-AL-PPR system includes:

• Straight pipes in various diameters and pressure ratings

• PPR fittings (elbows, tees, reducers, couplings)

• Transition fittings for metal pipe connections

• Valves (ball valves, stop valves)

• Wall brackets and support systems

• Specialized stripping and fusion tools

---

Standards & Compliance

Our PPR-AL-PPR Composite Pipe is manufactured in compliance with:

• ISO 15874 (international standard for PPR piping systems)

• DIN 8077 / 8078 (German standard)

• Applicable regional certification requirements

---

Quality Assurance

All products undergo rigorous quality control, including raw material verification, layer bonding integrity testing, dimensional inspection, pressure testing, and visual inspection, ensuring consistent quality and reliable performance.