Aluminum alloy plastic-lined composite pipe is a new type of practical pipeline that combines the physical and chemical advantages of both metal and plastic materials. The following is a detailed introduction:

I. Structural Features

• Outer Layer: Seamless aluminum alloy pipe, formed by heating and extruding 6063 deformed aluminum, and then treated with an anodizing process. The anodized coating on the aluminum pipe exceeds 10μ, meeting relevant standards.
• Inner Layer: Thermoplastic plastic pipe, typically made of food-grade materials such as PP-R, PE-RT, PB, PE, etc.
• Double-Layer Structure: Through prestressed composite technology, the aluminum alloy pipe and thermoplastic plastic pipe are tightly bonded together, forming a double-layer composite pipe.

II. Performance Advantages

• Pressure Resistance and Aging Resistance: Effectively resists ultraviolet radiation from sunlight, with strong anti-aging performance, extending the pipeline's service life, making it particularly suitable for exposed installations.
• Oxygen Barrier: Plastic itself is a non-gas-tight material, allowing oxygen to easily permeate through the plastic pipe into the water. The aluminum alloy plastic-lined pipe effectively blocks oxygen permeation, overcoming the drawback of single plastic pipes that easily lead to microbial and algal growth.
• Easy Installation: With a specific gravity only 1/6 that of galvanized pipes, it is lightweight and easy to handle. It uses heat fusion connections, eliminating the need for threading, making operation simple and easy to control, and installation more convenient and faster. Additionally, heat fusion joints do not leak due to poor fusion causing cracks or shrinkage holes, ensuring a maintenance-free pipeline system.
• Stable Flow: Smooth inner wall, no scaling, low transport resistance, and stable flow.
• Thermal Insulation and Energy Saving: Low thermal conductivity, excellent insulation performance, contributing to energy conservation and emission reduction.
• Lightweight and Rigid: Combines the advantages of metal and plastic, featuring rigidity and lightweight properties.

III. Application Scenarios

• Construction Field: Suitable for exposed and concealed cold and hot water pipeline systems inside and outside buildings, such as hotels, hospitals, schools, etc.
• Industrial Applications: Used in civil and industrial building cold and hot water systems, as well as drinking water, pharmaceutical, and environmental protection clean water pipeline systems.
• Heating and Air Conditioning: Serves as the inlet and return water pipeline system for central air conditioning and radiator heating.
• Solar Energy Systems: Applied in solar heating and cooling device pipeline systems.

IV. Production Process

• Material Selection: Use aluminum alloy and thermoplastic plastic pipes that meet standards.
• Composite Process: Insert the thermoplastic plastic pipe into the aluminum alloy pipe, and tightly bond the two through linear prestressing.
• Testing and Packaging: Conduct various performance tests on the produced aluminum alloy plastic-lined composite pipes, including pressure resistance, corrosion resistance, connection performance, etc. Ensure product quality meets standards before packaging and transportation.

V. Precautions

• Aluminum alloy plastic-lined PP-R pipes, aluminum alloy plastic-lined PE-RT pipes, and other aluminum alloy plastic-lined composite pipes of different materials cannot be fused together and should not be used interchangeably.
• During prestressed fusion, ensure the outer aluminum pipe is evenly stressed to avoid gaps on one side.
• During the anodizing treatment, strictly control the time to ensure the anodizing effect achieves anti-corrosion performance.