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PPR aluminum plastic alloy tube


Perfect fusion of plastic pipe and metal pipe

PPR aluminum-plastic alloy pipe (abbreviation: aluminum-plastic PP-R) is an aluminum-plastic composite pipe that can be directly melted. The first-generation products are mainly aluminum-plastic composite pipes with aluminum pipes in the form of lap welding. The implementation standard is CJ/T195-2004 "Outer-layer welding aluminum-plastic composite pipes". The second-generation products are mainly upgraded on the basis of the first-generation products, adopting the S series specifications, and the piping design is selected. Compared with the first-generation products, the piping design is more scientific and the theory is more in line with ISO10508 "Cold/Hot Water Installation Use plastic piping system-classification and design guidelines, and its theoretical design pressure is greater than the first generation. The third-generation aluminum-plastic PP-R composite pipe (NPAP) is completely different from the previous two generations. The pipe is an aluminum-plastic composite pipe with butt welded aluminum pipe. This pipe not only conforms to the second-generation ISO10508D design theory, but also The aluminum pipe butt argon arc welding (laser welding) process with higher process strength is adopted, and the pressure-bearing capacity of the pipeline is further improved on the basis of the second-generation product. At the same time, it is combined with the hot-melt tool of our company's patented technology to completely perfect The design defect of aluminum-plastic PP-R is solved (the aluminum tube at the end of the nozzle will be in contact with water).

PPR aluminum plastic alloy tube

product advantages

New production process

The composite pipe produced by Longyue Pipeline uses argon arc welding (laser welding) at the joint of the aluminum strip to replace the traditional lap ultrasonic welding process, which improves the strength of the joint of the aluminum strip and makes the pressure-bearing performance of the product a qualitative leap , The pressure-bearing capacity is better than most products on the market, and it is more suitable for use in high-pressure environments.

Higher quality standards

The composite pipe produced by Longyue Pipeline is higher than the industry standard in the thickness of the aluminum strip and the thickness of the inner and outer PPR to ensure higher strength and better quality, which greatly improves the product performance and service life.

Better rigidity

After the aluminum tape layer and the inner and outer PPR layers are thickened, the rigidity of the pipe is also increased, it is not easy to deform, and it can adapt to the requirements of surface installation in various environments.

New installation welding technology

The welding tool used in this product adopts self-developed special welding equipment, which has obtained relevant national patents. This tool can completely prevent the direct contact between the aluminum tube and water during the hot-melt connection, and solves the direct melting aluminum-plastic PP-R The fatal flaws of this product fully guarantee the service life of the product.

Good oxygen barrier

The aluminum tube layer can completely isolate oxygen from permeating and has 100% oxygen permeability resistance. It can keep the heating system in a low-oxygen environment for a long time, effectively prolonging the service life of metal components such as boilers, radiators, manifolds, valves, etc. The user’s use and maintenance costs are reduced.

Good shading

With the natural light-shielding of the aluminum tube, the aluminum-plastic PP-R has good opacity. When the pipe is exposed to the surface, it can effectively resist the breeding of algae bacteria, thereby effectively ensuring the sanitation and safety of water.

Installation process and steps

Aluminum-plastic alloy tube

1. Hot melt die head selection

Select the special die head corresponding to the specifications and fix it on the PP-R fuser with hexagon socket bolts.

Note: In order to ensure the excellent performance of PPR aluminum-plastic alloy pipes, the hot melt die used during installation must be our company's special die, and the installation must be carried out in strict accordance with the hot melt procedure.

2. Fuser preparation

a. Turn on the power and check whether the fuser is normal.

b. Clean the foreign matter in the observation hole of the special die.


a. The green indicator light is on to indicate that the heating has been completed and the welding operation can be performed, and the red indicator light is on to indicate that it is heating. You need to wait for the green indicator light to turn on before proceeding.

b. Use pipes to assist in cleaning foreign objects in the observation hole.

3. Hot melt welding

a. Use a cutting knife to cut the pipe vertically to the required length (if it is a pipe cutter, it needs to be rotated to cut to avoid the ellipse of the pipe port affecting the welding quality) b. Insert the pipe fittings into the special die without rotating at the same time, and observe the special die for the pipe end Check whether the pipe has been pushed to the bottom of the die by using the observation hole of the head (the pipe will continue to be inserted to a depth of 3 mm after the observation hole finds the pipe). If it has been inserted to the bottom of the die, hold for 3 seconds. c. Immediately remove the pipe fittings from the special die head, align the direction, and quickly and evenly insert them to the required depth in a straight line without rotation, so that the joints form a uniform flanging. d. Keep it fixed for 3-5 seconds, let it cool down and let it go. The hot-melt welding is completed.


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