Can aluminum plastic PPR composite pipe be bent?

1. The aluminum-plastic PPR composite pipe can be bent but cannot be bent beyond its own bearing angle, which is consistent with the limit of ordinary PPR bending.

1.The place where the aluminum-plastic pipe bends is very simple, and you can bend it by hand.

2.The elbow can be omitted, as long as it is not a dead bend.

3.If you use an elbow, connect it directly, tighten it, and you don't need to stick it at all.

II.1The connection of the aluminum-plastic composite pipe is a ferrule type, so the first is to pass a strict pressure test to check whether the connection is firm. The second is to prevent frequent vibration and loosen the ferrule.

2.Because the aluminum-plastic composite pipe is: it has the same strength as the metal pipe, and it is easy to bend and is not **; Excellent high temperature resistance, high pressure resistance and corrosion resistance; The tube is smooth, low resistance, and not easy to block; Good flame retardancy, good thermal insulation performance; Due to the use of aluminum core, the characteristics can only reach the curvature of its own properties.

It is not possible to bend beyond a certain angle, which is basically the same as the limit of ordinary PPR bend. Although the aluminum can be nested at will, the glue connected between the PPR and the aluminum-plastic will crack due to the bending of the socket, and the pipe will not be usable. Therefore, if PPR basically cannot nest, aluminum-plastic PPR cannot nest either.

Generally speaking, it is PE-RT that can be bent by hot melt connection, not aluminum-plastic PPR.

OK. to be connected by a threaded transition. An aluminum-plastic pipe joint with an inner wire, one end is connected to the aluminum-plastic pipe, and the other end is left with an inner wire.

A PPR joint with an outer wire, Huai Xian argues that one end is connected to the PPR tube, and the other end is left with the outer wire. Then the inner and outer wires left out can be connected through threads.

Note that the aluminum-plastic pipe must be cut flat, after installation, connect to the gas, apply the foam of dish soap to the joint, check whether there is air leakage, and buy a better raw material belt, do not buy cheap lead. Aluminum-plastic pipes can be in the form of rubber ring interface, adhesive interface, flange connection, etc.

The rubber ring interface is suitable for the connection of pipes with a diameter of D63-D315mm; The bonding interface is only suitable for the connection of pipes with an outer diameter of less than 160mm; Flange connections are generally used for the connection of hard polyethylene pipes and cast iron pipes and other material valves.

High-density polyethylene plastic pipes can be hot-melt connected.

The differences between aluminum-plastic pipes and PPR pipes are as follows:

Aluminum-plastic pipe: It is a kind of longitudinal welded aluminum pipe in the middle, the inner and outer layers of polyethylene plastic and the hot melt glue between the layers, the aluminum-plastic pipe has outstanding health performance, and the inner and outer layers of the aluminum-plastic pipe are special polyethylene materials, which are clean and non-toxic; Excellent high and low temperature resistance, long-term use temperature of 95 degrees, maximum use temperature of 110 degrees, and small thermal expansion coefficient of aluminum-plastic pipe; Long service life; Aluminum-plastic pipes are easy to oxidize in the wall for a long time, and it is difficult to play a protective role; The connectors of aluminum-plastic pipes are expensive.

PPR pipe: also known as three types of polypropylene pipe, random copolymer polypropylene, the use of random copolymer polypropylene can be extruded into pipes, can also be injection molded into pipe fittings, PPR pipes and traditional cast iron pipes, galvanized steel pipes, cement pipes and other pipes, with energy-saving lead-saving high materials, low cost, environmental protection, light weight and high strength, corrosion resistance, inner wall Guangchang shed slippery and non-scaling, easy construction and maintenance, long service life and other advantages, widely used in construction, industrial fluid transportation, agricultural irrigation, etc.

PPR aluminum-plastic composite pipe brand.

1. Jinde. 2. Weixing.

3. Zhongjie pipeline.

4. Golden Horns.

5. Rifeng. 6. Lesso.

7. A.D. 8. Zhongcai.

9. Pilsa.

PPR aluminum-plastic composite pipe**.

Aluminum-plastic pipe is more expensive than PPR pipe, about 8 yuan per meter, now aluminum-plastic pipe has been replaced by PPR pipe, PPR pipe is the first choice for home improvement drinking water pipe, PPR pipe has a longer service life, and environmental protection and health, no scaling is not easy to breed microorganisms, easy to install.

Disadvantages of PPR aluminum-plastic composite pipe.

1. Outstanding health performance: The inner and outer layers of the aluminum-plastic pipe are made of special polyethylene material, which is clean and non-toxic. The most important thing is that the middle layer of the aluminum-plastic pipe is aluminum, which can not only block light, but also block oxygen.

As we all know, the environment of the sinister microorganisms must be light and aerobic. The middle aluminum layer of the aluminum-plastic pipe prevents the breeding of microorganisms and algae plants, which is beyond the reach of the all-plastic pipe.

2. Excellent high and low temperature resistance: long-term use temperature of 95 degrees (50 years, IMPA), maximum use temperature of 135 degrees, and the thermal expansion coefficient of aluminum-plastic pipe is small. It has a coefficient of thermal expansion comparable to aluminum, which is only one-sixth of that of all-plastic pipes.

When subject to temperature changes, the deformation is small, and the aluminum-plastic pipe is a flexible coil, and the pipe itself can digest a certain amount of deformation, which will not cause the thermal expansion and deformation of the pipeline system.

Foshan Rifeng enterprise as a leading enterprise of aluminum-plastic pipe, "healthy Meifeng, quality leading" and "effective for 50 years" is its commitment to consumers, but also a kind of confidence in aluminum-plastic pipes, the PE plastic used in aluminum-plastic composite pipes, molecular chain structure (-CH2-CH2-) is more stable in plastics, and because the middle aluminum layer of aluminum-plastic pipes isolates the inner and outer layers, the outer layer of plastic allows to add stabilizers that are enough to resist light and oxygen aging without affecting the hygiene of the inner layer in contact with water, so as to strengthen its anti-aging performance.

You can get it for free

The differences are as follows: 1. The connection mode is different.

The aluminum-plastic pipe is physically connected, which is simple and convenient, and its safety and reliability are very high unless the operation is improper;

PP-R is hot-melt or electro-fusion connection, which has a complex process and is prone to stacking defect areas, resulting in stress concentration and affecting the long-term performance of the pipeline. In addition, the local high temperature of the electric fuse can easily promote the degradation of pipeline materials and accelerate the aging of pipelines.

2. The hygienic performance is different.

The middle aluminum layer of the aluminum-plastic pipe isolates oxygen, which is not easy to lead to the breeding of microorganisms and algae plants, and the outer layer of PE allows antioxidants to be added, which will not cause water pollution in the inner layer;

PP-R pipe can not block oxygen, which can easily lead to microbial and algae reproduction, affecting the hygiene of drinking water; It also contains a large amount of antioxidants, which is easy to cause water pollution.

3. The high temperature resistance is different.

The long-term use temperature specified in the national standard of aluminum-plastic pipe is 95, and the maximum use temperature is 110, which can fully meet the needs of household water;

The long-term service temperature specified in the PP-R national standard is 70, and the maximum service temperature is 95, which has certain limitations in the use of hot water pipes.

4. The aging resistance is different.

The molecular structure of the aluminum-plastic tube is stable, the inner and outer layers are separated by PE, and the outer layer allows the addition of sufficient anti-light and anti-oxidant stabilizers without affecting the hygiene of the inner layer in contact with water;

PP-R tubes contain a large number of unstable tertiary carbon atoms, which are susceptible to aging by light, oxygen and impurities.

The difference between cold and hot water and PPR hot and cold water pipes for aluminum-plastic pipes is different in the connection method, the aluminum-plastic pipe is connected with all-copper fittings, so the linear expansion is inconsistent, and the waste product can not be used, while the PPR pipe is a hot melt connection, the linear expansion is consistent, and the raw material of PPR is type 3 polypropylene, which can be used, so the PPR pipe gradually replaces the aluminum-plastic pipe;

In home decoration, aluminum-plastic pipes are used for gas pipes, and the aluminum-plastic pipes of gas in our factory have the following characteristics:

1. It has the same strength as the metal pipe, and is easy to bend, which eliminates the brittleness of the metal pipe, and does not bend it;

2. It has flame retardant characteristics and can transport flammable and explosive gases and oils;

3. Good thermal insulation performance, and its thermal conductivity is;

4. Easy to cut and process, can be connected with special pipe fittings without tapping buckles, small-diameter pipes into rolls, arbitrarily long, arbitrarily bent, saving elbows and pipe fittings, easy installation and construction, compared with metal pipes, can save 80% of construction costs;

5. The service life is up to 50 years;

6. Light weight, only one-tenth of galvanized pipe; Save freight and reduce costs;

7. The aluminum alloy layer has electrical shielding effect and magnetic shielding effect;

8. It can be directly buried in the ground and the wall, and the pipe position can be detected with a metal detector.

PPR aluminum-plastic composite pipe is composed of five layers, the middle layer is a thin-walled aluminum layer, the outer layer is PP-R, the inner layer is PE-RT, and imported hot-melt adhesive is used between the layers. 2. Different characteristics: 1. Aluminum-plastic composite pipe: aluminum-plastic composite pipe has good thermal insulation performance, and the inner and outer walls are not easy to corrode, because the inner wall is smooth, and the resistance to fluid is very small; And because it can be bent at will, it is easy to install and construct.

As a water supply pipeline, the aluminum-plastic composite pipe has sufficient strength. 2. PPR aluminum-plastic: five-layer multi-organic composite, light weight, high mechanical strength, good heat resistance, no scaling, long service life and other excellent characteristics.

3. Different uses 1. Aluminum-plastic composite pipe: high-density polyethylene and aluminum composite pipe that can be used for building cold and hot water and hot water heating. 2. PPR aluminum-plastic: mainly used for cold and hot water and drainage systems of buildings, including low and medium heating systems.