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Performance Characteristics and Applications of PPR, PERT, PEX pipe, and Aluminum-Plastic Composite Pipes
Production Process of Cold/Hot Water Pipe Lines
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Author: Site Editor
Publish Time: 2025-05-26
Origin: Site
Performance Characteristics and Applications of PPR, PERT, PEX pipe, and Aluminum-Plastic Composite Pipes
In the fields of building water supply and drainage, heating systems, and industrial piping, selecting the right pipe material directly impacts project quality and long-term operational costs. This article provides an in-depth analysis of the core differences between PPR pipes, PERT underfloor heating pipes, PEX pipes, aluminum-plastic composite pipes, and three-layer PPR pipes, helping you choose the most suitable product for your needs.
1. Basic Characteristics Comparison
Pipe Type | Material Composition | Temperature Resistance | Key Features |
PPR Single-layer | Random copolymer polypropylene (single layer) | -20℃~95℃ | High rigidity, corrosion resistance, low cost |
PPR Three-layer | Layered structure (PPR/modified layer/PPR) | -20℃~95℃ | Oxygen barrier, UV resistance, high hygiene |
PERT | High-temperature polyethylene (Type II) | -40℃~95℃ | Flexibility, low-temperature impact resistance, floor heating use |
PEX | Cross-linked polyethylene (Types A/B/C) | -70℃~110℃ | High elasticity, high-temperature creep resistance, freeze crack resistance |
Aluminum-Plastic Pipe | PE-aluminum-PE composite (multi-layer) | -40℃~95℃ | UV resistance, shape retention, oxygen barrier |
2. Connection Methods Comparison
Pipe Type | Common Connection Methods | Installation Difficulty | Joint Reliability |
PPR Single-layer | Hot melt welding | Medium | High (joint strength ≥ pipe strength) |
PPR Three-layer | Hot melt welding (requires homogeneous materials) | Medium | High |
PERT | Slip-fit clamps/electrofusion | Low | Medium (relies on sealing rings) |
PEX | Expansion press-fitting/quick connectors | Low | Medium (potential shrinkage leakage) |
Aluminum-Plastic Pipe | Copper crimp fittings (requires hydraulic tools) | High | Medium (rubber ring aging) |
3. Application
Type | Recommended Pipe Type | Reason |
Residential cold water | PPR Single-layer | Cost-effective, hygienic, easy installation |
Residential hot water/heating | PPR Three-layer, PEX | Oxygen barrier, high-temperature resistance (prevents metal corrosion) |
Floor heating coils | PERT | Flexibility, low-temperature resistance, no creases |
Outdoor exposed pipes | Aluminum-Plastic, PPR Three-layer | UV resistance, deformation resistance |
Extreme cold regions | PEX, Aluminum-Plastic | Freeze crack resistance (-40℃ and below) |
Industrial chemical pipes | PPR Three-layer (fiberglass-reinforced) | Corrosion resistance, high pressure |
4. Core Performance Differences
Parameter | PPR Single-layer | PPR Three-layer | PERT | PEX | Aluminum-Plastic |
Compressive strength | Medium (≤2.5MPa) | High (≤3.2MPa) | Medium (≤2.0MPa) | High (≤4.0MPa) | High (≤3.5MPa) |
Oxygen permeability | High | Very low | Medium | Low | Very low |
Flexibility | Poor | Poor | Excellent | Excellent | Medium |
Low-temp resistance | Fair (-20℃) | Fair (-20℃) | Excellent (-40℃) | Excellent (-70℃) | Excellent (-40℃) |
Lifespan (50 years) | 60℃/1.0MPa | 60℃/1.6MPa | 60℃/0.8MPa | 95℃/1.0MPa | 70℃/1.0MPa |
5. Production Line Process Differences
Pipe Type | Core Process Steps | Key Differences |
PPR Single-layer | Drying → Single-screw extrusion → Vacuum sizing → Cooling → Cutting | Single-layer extrusion, simple process |
PPR Three-layer | Three-layer co-extrusion (inner/middle/outer layers) → Composite sizing → Cooling | Multi-extruder coordination; middle layer is typically glass fiber |
PERT | Material mixing → Extrusion → Cooling → Traction → Coiling | Low-temperature impact modification |
PEX | Extrusion → Cross-linking treatment → Cooling | Core cross-linking process |
Aluminum-Plastic Pipe | Inner PE extrusion → Aluminum welding → Outer co-extrusion → Composite | Metal/plastic composite structure |
PPR Pipe Production Line Output Table
Our PPR pipe production line outputs (based on pipe diameter range):
PPR Single-layer Pipe:
Diameter 16-63mm (dual output): 180-220 kg/h
Diameter 16-63mm (single output): 70-150 kg/h
Diameter 20-110mm: 140-220 kg/h
Diameter 50-160mm: 180-220 kg/h
PPR-GF-PPR Three-layer Pipe:
Diameter 20-63mm: 100-150 kg/h
Diameter 75-110mm: 150-180 kg/h
Diameter 75-160mm: 150-240 kg/h
Our Jiangsu xinrongplas Machinery Co.,Ltd produce machinery for PPR, PERT, PEX pipe line.
We do not just manufacture and supply extrusion equipment for plastics; we also provide complete solutions for you.
n We offer a complete line and all auxiliary equipment for the line.
n We advise on workshop requirements, including water and electrical consumption.
n We provide feasibility analysis and return on investment data.We have experienced and professional engineers who assist with your technical details and customized requirements.
n We can arrange video calls to show our factory and discuss your equipment and any issues online, ensuring timely responses to your concerns.
If you want to know more about extrusion machine and technology, please feel free to contact with us.
