What are the characteristics of PPR aluminum alloy plastic lined composite pipe?

High compressive and tensile strength: the inner layer is 304 stainless steel, and the outer layer is galvanized steel pipe or carbon steel pipe. After spiral extrusion and composite, the bonding, compressive and tensile strength is much higher than the national standard The inner pipe is made of stainless steel 304 material, which has anti-rust and oxidation resistance, acid and alkali resistance and other chemical properties, and the outer pipe is made of galvanizing, epoxy coal asphalt, epoxy resin, three oil and two cloth and other anti-corrosion treatments Heat and cold resistance The cold and cold cold box of hot and cold liquid nitrogen is made of stainless steel, so the stainless steel composite pipe lined with superior heat and cold resistance, and regardless of cold water pipe, one pipe is used for two purposes, both hot and cold. Easy to install, simple connection, lined stainless steel composite pipe, the installation is the same as ordinary galvanized steel pipe, welded, flange connection, groove connection or threaded connection, large diameter, small resistance, lined stainless steel composite pipe, the inner layer of stainless steel composite pipe is very thin, so the actual diameter is the same as...

Aluminum alloy plastic-lined composite pipe has the characteristics of beautiful appearance, health and environmental protection, high compressive strength, good temperature resistance, high pressure, no oxygen permeability, corrosion resistance, low friction resistance, large heat transfer resistance, good thermal insulation, ultraviolet resistance, convenient and reliable connection, 100% oxygen resistance, and long service life.

Application of PPR aluminum alloy plastic-lined composite pipe:

Aluminum alloy plastic-lined composite pipes can be widely used in industrial and civil buildings, as a water supply and return pipeline for transmission and distribution of domestic hot and cold water pipelines and hot water heating systems.

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.

Usually, the aluminum-plastic pipe we talk about is generally made of PE (polyethylene) and aluminum, and the aluminum-plastic PPR pipe is made of PPR (polypropylene) and aluminum, and the wall thickness of the aluminum-plastic pipe is smaller than that of the aluminum-plastic PPR pipe.

The connection mode of aluminum-plastic pipe is compression pipe fitting or compression pipe fitting.

The connection method of aluminum-plastic PPR pipe is hot-melt welding with PPR pipe fittings (note that the end face of the pipe must be bushed).

There is also a kind of pipe called plastic aluminum steady state pipe.

It is similar to the structure of aluminum-plastic PPR pipe, but it does not need to be bushed during welding.

The first is the link angle: the link method of these two pipes is completely different, the aluminum-plastic pipe is physically linked, this link method is relatively easy to operate, even ordinary people can connect an aluminum-plastic pipe, as long as there are joints and pipes, it is just a test of the construction personnel's familiarity with the installation process. Then the installation link of the PPR pipe is not like this, it needs to be linked with the help of hot melt or electric fusion, this link process is relatively complex, not a professional construction personnel is not good to do, this link will cause some defects in the link.

Reference: The second is the health angle: the health problem of aluminum-plastic pipe and PPR pipe is an important issue for decoration engineers, aluminum-plastic pipe is more suitable for long-term use, because there is a sandwich in the middle of the aluminum-plastic pipe to isolate gas, as long as the oxygen does not come in, it is not easy to oxidize the pipe layer inside, and it is not easy to produce the so-called microorganisms, and then the PPR pipe can not isolate oxygen, so in the process of long-term flow, it is easy to oxidize the pipe layer inside, breeding some bacteria and microorganisms, which is not conducive to drinking water health. Sometimes it pollutes the environment.

The third is the angle of high temperature resistance, the specified conventional temperature of the aluminum-plastic pipe is 100 degrees Celsius, and the highest use temperature is 110 degrees Celsius, and the conventional temperature of the PPR pipe is not so high, at 50 degrees Celsius, and the maximum temperature does not exceed 80 degrees Celsius.

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Hello, pro, 1. Compared with these two kinds of pipes, PPR pipes will be lower in terms of cost, and they are an economical and affordable product, which can be connected in a hot melt way, but the time and pressure are not very easy to master, and the randomness of the process will be larger. In addition, after the use of electric fuse, the copper in the PPR will be dissolved quickly, so the aging rate will be relatively fast. In the case of aluminum-plastic pipe, it can be connected in a physical way, and the aluminum layer inside it has a good compressive effect, which is much higher than that of PPR pipe from this point of view alone.

But in terms of cost, it will be relatively high, and the overall cost will be more than that of PR pipes. 2. PPR pipe will be worse than aluminum-plastic pipe in terms of hygienic pollution, because it is an all-plastic pipe and has no effect of blocking oxygen, so it is easy to breed bacteria during use, resulting in water pollution. In the case of aluminum-plastic pipes, it has a barrier effect, which is not easy to breed bacteria, and can effectively reduce water pollution.

Aluminum-plastic composite pipe is the inner and outer pipe for plastic, sandwiched with aluminum alloy layer in the middle, the former and the latter have different appearances, different processes, and basically the same use, but the performance of aluminum alloy lined plastic pipe is much higher than that of the latter, and the aluminum-plastic composite pipe process is relatively backward.

The plastic-lined pipe is based on ordinary carbon steel pipe, lined with thermoplastic with excellent chemical properties, and formed by cold drawing composite or rotational molding, which has both the mechanical properties of steel pipes, the corrosion resistance of plastic pipes, slow scaling, and the characteristics of not easy to grow microorganisms, and is an ideal pipeline for transporting acid, alkali, salt, corrosive gas and other media.

Aluminum alloy lined plastic pipe is the abbreviation of aluminum alloy lined plastic composite pipe, according to the different materials of the lined plastic pipe, it is generally divided into aluminum alloy lined PE-RT pipe, aluminum alloy lined PP-R pipe, aluminum alloy lined PB pipe, etc., its structure is two layers: the outer aluminum alloy pipe is made of aerospace 6063 seamless aluminum alloy pipe, and the inner layer is pure PE-RT, PP-R, PB plastic pipe, which is a two-layer structure pasted together by prestressed composite technology.

The aluminum-plastic composite pipe is a five-layer structure formed by co-extrusion composite of plastic (PE material) and inner and outer pipes, sandwiched with aluminum alloy layers in the middle, heated and melted between layers.

Through comparison, aluminum alloy plastic-lined composite pipe has more advantages than aluminum-plastic pipe, first of all, the outer aluminum alloy is impact-resistant, corrosion-resistant, not easy to deform, and has a gorgeous appearance; The outermost layer of the aluminum-plastic pipe is a PE pure plastic pipe, which has weak performance; Secondly, the connection of aluminum alloy plastic lined composite pipe adopts hot melt or electric fusion, and only the surface aluminum alloy layer needs to be peeled off to install; Aluminum-plastic pipes are troublesome, time-consuming and laborious to install hot melt.

Therefore, the aluminum alloy plastic-lined composite pipe is an ideal choice for the current domestic hot and cold water and air conditioning water system.

Different names for one product.

Differences:1The material is different:

PP-R pipe: high hardness, generally provided as a straight pipe, 4 meters per pipe, storage and transportation are higher than coil costs. And PPR old material waste can be **.

Re-use, ordinary people can't easily distinguish.

German Junde aluminum-plastic composite pipe: flexible.

Well, according to different pipe diameters, there are 100 meters and 50 meters in rolls. The molecular structure of the PE-X raw material has changed during extrusion and cannot be returned to the furnace for production.

2.The connection is different:

PP-R pipe: hot melt, the disadvantage of hot melt is that it is easy to shrink the diameter and no hot melt in place, the diameter reduction will lead to the water flow rate will become smaller, and no hot melt in place will lead to water seepage.

German Junde aluminum-plastic composite pipe: I don't know how other brands use it, our German Junde water pipe is a slip tight type, and whether the sliding collar is advanced in place can be judged by the naked eye; Use matching tools to push the sliding collar into place, no need to seal the rubber ring, no need to worry about the insertion depth of the fitting; Both the expansion and propulsion processes avoid the impact of human factors on connection security. Moreover, there is no reduction in diameter for the slip-on type.

Tube: The joints are more careful, and a small turn needs to be used at a right angle.

German Junde aluminum-plastic composite pipe: even on the complex top surface, there is no need to increase the joint, only need to bend the water pipe, and there are few joints on the top surface except for tees.

If you want to talk about the advantages of PPR pipes, that is, the aesthetics of straight pipes are better than those of aluminum-plastic composite pipes, but is the aesthetics more important or the practicality of actual use? What's more, the water pipes are sealed in the ceiling, and you can't see it.