Aluminum Alloy Lined Plastic PP-R Composite Pipe not only has the general advantages of plastic pipes such as light weight, corrosion resistance, no scaling, and long service life, but also has the following main features:

    1. Low linear expansion coefficient: The linear expansion coefficient of Aluminum Alloy Lined Plastic PP-R Composite Pipe is 1/5 of that of ordinary PP-R pipes, close to that of metal pipes, with no significant thermal expansion or contraction. During installation, for horizontal installations with a length of less than 40 meters, there is no need to consider pipe deformation. This is particularly advantageous in applications such as high-temperature hot water, HVAC, and outdoor exposed pipelines. Practice has proven that Aluminum Alloy Lined Plastic PP-R Composite Pipe shows no deformation or anomalies after long-term hot and cold cycle testing, fully demonstrating its stable high-temperature resistance performance.

    2. No oxygen penetration, sanitary: The Aluminum Alloy Lined Plastic PP-R Composite Pipe is covered with alloy aluminum foil on the outer surface of the inner PP-R pipe, giving the plastic a layer of metallic armor that completely isolates external air, keeping the fluid medium inside the pipeline system free from oxygen infiltration and light exposure, thus inhibiting the growth of algae and bacteria, and ensuring water quality. When used in central air conditioning systems or heating systems, it can prevent oxidation and corrosion of metal equipment.
      3. High compressive strength, good temperature resistance: Compared to other pipes, PP-R pipes exhibit good pressure resistance performance, and possess certain metallic properties in terms of long-term strength. The addition of a metal layer increases the rigidity of the pipe and reduces its creep, thereby enhancing the compressive strength and temperature resistance of the pipe.
    4. Reliable hot melt connection, high leakage safety: The Aluminum Alloy Lined Plastic PP-R Composite Pipe still uses the hot melt connection method. Before connecting, a special peeling tool is used to remove the outer plastic aluminum composite layer, and then it is hot melted with fittings of the same material, ensuring the integration of pipe and fittings without leakage concerns. The inner pipe dimensions meet the standard pipe series requirements, and the hot melt method is the same as that of PP-R pipes, with the aluminum layer completely insulated from the hot medium water, ensuring a firm connection, high safety, convenient operation, and low leakage risk.
    5. Good economic performance: The Aluminum Alloy Lined Plastic PP-R Composite Pipe is lightweight, easy to install, and quick, shortening construction time and saving labor costs. The construction costs are 60% lower than those of galvanized steel pipes, and it requires almost no maintenance.
       6. Advantages over galvanized pipes:
    1) Sanitary and non-toxic, truly a green and environmentally friendly product.
    2) Corrosion-resistant, no scaling, no rusting, completely preventing "secondary pollution" of water.
    3) High temperature and pressure resistance, acid and alkali resistance, aging resistance.
    4) Hot melt connection, reliable joints, no leakage.
    5) Long service life: at least 50 years under specified conditions, while galvanized pipes have a lifespan of only 10 years.
    6) Smooth inner wall, low flow resistance, effectively avoiding water hammer noise.
    7) Good thermal insulation and energy saving.
    8) Good sound insulation effect.
    9) Attractive appearance, harmoniously unified with furniture and decoration.
    10) Convenient for transportation and installation, saving costs.