Types of PPR pipes and their characteristics. Characteristics of polypropylene (PPR) pipes Polypropylene pipe ppr pn 20

PPR pipe PN25 is a polypropylene pipe reinforced with aluminum film or fiberglass, with a nominal pressure of PN25. According to its properties, it is identical to metal-plastic. It is used in hot water supply and heating systems. We will consider the properties and characteristics of this pipe in this article.

What is a PPR pipe PN25

As mentioned above, a PPR PN25 pipe is one that is reinforced with an aluminum film or fiberglass and has properties similar to metal-plastic. The service life of such a pipe depends on the operating pressure in the system and the temperature of the coolants. Nominal pressure – 2.5 MPa. Pipe dimensions: outside diameter 21.2–77.9 mm, internal diameter 13.2–50 mm, wall thickness 4–13.4 mm.

Manufacturers confidently claim that polypropylene has amazing properties. This material is universal and is used in the installation and reconstruction of utility lines in residential and industrial complexes. The PPR pipe with a nominal pressure of PN25 has successfully passed tests in independent European and world laboratories, which is proven by confirming quality certificates. Its significant advantages:

The long service life is about 50 years, and in cold water supply systems such pipes can last up to 100 years.

A special internal surface on which no deposits form when exposed to water.

Excellent sound insulation. Polypropylene absorbs noise that occurs during water transportation.

Low thermal conductivity of PPR polypropylene pipe (resistant to temperature changes), due to which condensation does not form on it.

Light weight compared to metal counterparts (9 times lighter).

Ease of installation.

Resistance to acid-base substances.

High elasticity.

Acceptable price.

Polypropylene pipe PN25 according to GOST

Modern polypropylene pipes are highly reliable, durable and have affordable price. A polypropylene pipe with a nominal pressure of PN25 is not subject to corrosion, is resistant to temperature changes, is easy to install and is made from environmentally friendly materials. pure materials. The main properties in accordance with GOST are given in the table.

Polypropylene pipe with nominal pressure PN25: technical characteristics

Several years ago, the PPR PN25 pipe was developed and put into mass production. Its technical characteristics can be found in the product passport.

Polypropylene pipe with nominal pressure PN25 is a product High Quality, despite the fact that it appeared on the market not so long ago. The use of this technology made it possible to eliminate the problem with the high coefficient of thermal expansion of plastic pipe products.

The above characteristics make it possible to use it in drinking and hot water supply systems, during the installation of heating and other utilities. It is also perfect for non-aggressive liquids and gases that do not affect the pipe material.

What are the advantages and disadvantages of PPR PN25 pipes?

Polypropylene pipe is one of the most popular types of building materials due to its technical characteristics and amazing properties this polymer.

Experts talk about the following features of this material:

The service life is up to 50 years. And if used only in cold water supply, then this period can reach 100 years.

No hard deposits are formed. This became possible thanks to a special technology for processing the internal surface.

Noise protection. This feature is also inherent in polypropylene pressure pipes, in which, due to high pressure Vibrating and rumbling noises that are unpleasant to the human ear may appear.

No condensation. The reason is the low thermal conductivity of polypropylene pipes.

Light weight. It is 9 times less than that of metal pipes.

Easy installation. But do not neglect the advice of professionals if you are new to this matter. Special attention You should pay attention to the heating time of polypropylene pipes when connecting them by welding.

No additional maintenance required.

Resistant to chemically aggressive acid-base compounds.

Has increased flexibility.

Affordable. There is a wide cost range on the market.

It must also be said that a polypropylene pipe with a nominal pressure of PN25 has good frost resistance, because for the special climate of our country this parameter is important.

Before this, we talked about the advantages of polypropylene pipes. But they also have disadvantages:

They are characterized by a fairly high linear expansion. Unreinforced polypropylene pipes require the use of special compensators during installation.

Low heat resistance. Regardless of the type of polypropylene pipes chosen, insulation must be used. This is especially important for heating systems.

Almost incapable of deformation. To change the direction of the pipe, additional fittings are required.

Direct hit is undesirable sunlight. And although direct solar exposure and does not contribute to an increase in temperature, but leads to premature aging of the material.

Advice! When installing the pipeline, it is necessary to take into account the expansion coefficient and follow special rules. So, pipes should not be allowed to sag. To do this, the pipe attachment points on the wall must be located at a certain short distance from each other.

What to consider when choosing a PPR PN25 pipe

Maximum temperature. Pipes are selected depending on the temperature of the coolant, taking into account the marking of polypropylene pipes. As mentioned above, a PPR pipe with a nominal pressure of PN25 is great option for heating systems, with PN20 - used in hot water supply, with PN16 - in cold water supply systems.

Diameter. Selected taking into account the technical characteristics of the planned pipeline system. For wiring in an apartment, pipes with a diameter of 20 mm and 25 mm are best suited. For risers, products with a diameter of 32 mm or 40 mm are used. Polypropylene pipe with thick walls and large diameter used for a main pipeline installed in the basement of a high-rise building.

Maximum permissible pressure. Almost all types of pipes are used for domestic conditions, including PN10 products. The effect of temperature on the service life of the PPR can be considered using this pipe as an example.

At a water temperature of +20 ˚С: the service life is up to 50 years, provided that the pressure in the central line does not exceed the required level.

At a water temperature of +50 ˚С: in order for the pipeline to last 50 years, the pressure should not be higher than proper.

At a water temperature of +70 ˚С: the service life will be equal to that declared by the manufacturer at pressure.

If the water temperature is often equal to +95 ˚С: in such cases the pipe is unlikely to last 50 years. Maximum term operation in these circumstances will be 5 years at constant pressure.

Thermal expansion coefficient. It is known that polypropylene pipes change their geometry under the influence of the high temperature of the transported liquid. The thickness of their walls varies. And this affects throughput pipeline.

Closed installation of pipe with a nominal pressure of PN20 is undesirable. When deformed, cracks may appear in the plaster. For pipes with a nominal pressure of PN25, laying both closed and open method. With an open installation, the interior of the living space will not become worse, because there are no bends on these products. The polypropylene pipe, reinforced with glass fiber, with a nominal pressure of PN25 perfectly retains its shape.

Important! The coefficient of linear expansion of polypropylene pipes largely determines how to lay the pipeline for hot water supply.

Service life of polypropylene pipes at correct operation is at least half a century.

How to connect PPR PN25 pipes

Pipe welding is carried out using the thermal polyfusion method. The parts to be welded must be heated and quickly connected. A special soldering iron is used for heating. Some models have two heating elements, the power of which is designed to heat pipes of a specific diameter, but this does not always have a positive effect on the quality of welding.

Important! Using two elements at once can lead to overheating of the plastic and overload electrical network. Therefore, the second heater should be used when the first one becomes unusable.

Heating time depends on:

pipe diameter;

welding belt width;

temperature environment– it should be within normal limits.

After heating, the material does not retain its plasticity for long. The connection must be fixed within a few seconds, without allowing distortions. Optimal temperature for warming up the mark is considered to be +260 ˚С. For a reliable connection, the pipe material must be very heated. But excessive heating can cause the shape to change. To avoid this, it is necessary to control the execution time of this operation. It should not exceed:

8...9 seconds for pipes with a cross-section of 20 millimeters;

9…10 seconds when welding a pipe with a diameter of 25 millimeters;

10...12 seconds for pipes with a diameter of 32 millimeters, etc.

Heated and already connected pipes must cool down. Fixing takes the same amount of time as heating. If the required time is not maintained, deformation of the connection will occur. Welding polypropylene pipes - relatively not an easy process. The quality is affected not only by the heating time, but also by violation of soldering rules. They are as follows:

while working welding machine must be constantly heated;

pipes must be marked to ensure proper depth weld seam;

The elements being connected must be heated simultaneously.

The specialists of the SantekhStandard company are always ready to help you make right choice. Our company has been a supplier of engineering plumbing in Russia since 2004.

By cooperating with our company “SantechStandard”, you gain the following advantages:

quality products at reasonable prices;

constant availability of products in stock in any quantities;

conveniently located warehouse complexes in St. Petersburg, Moscow, Novosibirsk and Samara;

free delivery in St. Petersburg, Moscow, Novosibirsk, Samara, including to transport companies;

delivery of goods to the regions through any transport companies;

individual approach and flexible work with every client;

discounts and various promotions for regular customers;

certified and insured products;

registered in Russia trade marks, which is additional protection against low-quality counterfeits.

The specialists of our company “SantechStandard” are ready to help both individuals and companies choose plumbing equipment. You just need to contact us by phone:

Plastic pipes– a modern replacement for old heavy metal pipes. Such lightweight plastic pipes appeared not so long ago, but they quickly gained a strong position among other pipes in the plumbing market.

When choosing a material for a pipeline, you will probably give your preference plastic products, however, choosing a specific option will be quite difficult, because they can be made from a variety of various materials: polyethylene, polypropylene, etc. In this article we will take a detailed look at the advantages and disadvantages of polypropylene pipes, comparing them with analogues.

Characteristics of polypropylene pipes

The PPR pipe has a number of distinctive characteristics, but the main one is the lightness of the product, which is ensured by the raw material - thermoplastic polymer with the lowest density (0.91 g/cubic cm) among similar materials.

The remaining characteristics determine the scope of application of these pipes:

• The operating temperature of polypropylene pipes ranges from -5°C to +140°C, so they are perfect for organizing heating systems, hot and cold water supply, but only indoors. When laying water supply outside, it is better to use sewn polyethylene pipes, which do not deform during cold snaps down to -50°C;
• The plastic is not subject to corrosion, which was big problem metal pipes, in addition, plastic water pipe guaranteed to last at least 50 years;
• PPR pipes have a smooth inner wall, which significantly increases their throughput and also prevents them from clogging;
• Plastic pipes are completely inert to most chemicals;
• Polypropylene pipes have a wide range of different diameters;
• Installation of PPR pipes is carried out using special fittings, also made of polypropylene. The pipes are welded into fittings using a special apparatus, which you can purchase at an affordable price.

Types of polypropylene pipes

There are 4 main categories of polypropylene pipes:

• P.P.H.– polypropylene pipe with high strength, but low resistance to negative temperatures. The main area of ​​application for such pipes is laying cold water pipes in industrial scale;
• PPB– polypropylene pipe, for the manufacture of which polyethylene is additionally used. The result is durable pipe, resistant to low and high temperatures. Most often used for laying underfloor heating systems;
• PPR pipes are made from a special polymer that includes ethylene molecules. This mixture allows for special tensile strength to be achieved, so such pipes can withstand pressure surges well. The pipes are excellent for laying cold and hot water supplies, but the water temperature in them should not exceed 70°C;
• P.P.S.-pipes are resistant to high temperatures up to 95°C. Often such pipes are marked with a red stripe.

Reinforced polypropylene pipes

One of the significant disadvantages of polypropylene is high coefficient thermal expansion. This is especially noticeable during construction heating system, where polypropylene expands so much under the influence of heat that during their installation it is necessary to install compensating loops, which is quite inconvenient.

Manufacturers have long taken care of this deficiency, releasing a reinforced polypropylene pipe.

PPR reinforced pipe also comes in different categories:

• PN20- the pipe is reinforced with fiberglass. When making polypropylene pipes, the manufacturer adds a layer of fiberglass to them, which is later baked into two adjacent layers of propylene. This results in a reinforced structure, which is used when laying hot water pipelines with a large number of joints. Such a pipe also has its drawback - a limitation in the diameter width, maximum size which is 63 mm;
• PN25– polypropylene reinforced with aluminum. The principle of reinforcement is similar to the previous one, but aluminum sheets and profiles are used here. The cross-section of such pipes can be up to 100 mm, but their installation is more difficult and requires stripping the aluminum layer.

With the development of technology, new materials appear on the market that are superior in their characteristics to their predecessors. In the field of communications, replacing the old ones metal pipes modern ones are coming, made on the basis of polymers.

One of the most popular materials in heating systems and water supply is polypropylene (PPR in the Russian abbreviation or PPR in the international marking). Polypropylene pipes have a number of advantages, due to which builders are increasingly leaning toward them when laying sewerage and heating systems.

Polypropylene pipes are used in the installation of communication systems in residential buildings, public buildings, as well as technical and production buildings:

• for filing drinking water,
• in cold water supply,
• for filing hot water,
• V central heating premises,
• for installation of heated floors and walls,
• in irrigation of farmland,
• at industrial enterprises,
• in fire safety systems,
• in swimming pools and other sports facilities,
• in shipping and so on.

Depending on the diameter of the pipe and the presence of additional layers, polypropylene products are used for laying both household pipelines and highways.

Types of PPR pipes

There are several types of polypropylene pipes:

1. PN 10 is a product with thin walls that can be used for cold water supply or installation of heated floors. The water temperature should not exceed +45°C. Such a pipe can withstand pressure up to 1 MPa (10.2 kg/cm²). This option very convenient if the pipeline will supply only cold water, since a thin-walled product requires the least resources for production, and therefore costs less than other types of PPR pipes. PN 10 pipes are manufactured with a diameter from 20 mm to 110 mm, with a wall thickness of 2.3-10 mm. Standard length pipe is 4 m.
2. PN 16 has thicker walls and can be used to supply both cold and hot water (but the temperature must be below +60°C). Operating pressure in PN 16 pipes - up to 1.6 MPa (16.32 kg/cm²). On average, the wall thickness of such a product is 0.5 mm greater than that of PN 10, which allows it to transport liquids of higher temperatures.
3. PN 20 is used to supply hot water (up to +80°C) and can withstand pressure up to 2 MPa (20.4 kg/cm²). This product has much thicker walls, up to + 1 mm compared to PN 10.
4. PN 25 are polypropylene pipes that can withstand temperatures up to +95°C, and therefore are used in hot water supply and heating systems. Working pressure - up to 2.5 MPa (25.49 kg/cm²).

Polypropylene pipe POTOK-BASALT PPR-BF-PPR, SDR 7.4, PN 20 reinforced with basalt is used for heating systems and hot and cold water supply systems, with a temperature range up to +95 C O . This pipe is made with reinforced mesh for greater strength and less heat transfer. Working pressure 2 MPa.

Polypropylene pipe POTOK-BASALT PPR-BF-PPR, SDR 6, PN 25 reinforced with basalt is used for heating systems and hot and cold water supply systems, with a temperature range up to +95 C O .

Polypropylene pipe PPR-GF-PPR, SDR 7.4, PN 20, reinforced with glass fiber, used for cold and hot water supply systems, at temperatures up to +95 C o. This pipe is made with reinforced mesh for greater strength and less heat transfer. Working pressure 2 MPa.

Polypropylene pipe PPR-GF-PPR, SDR 6, PN 25 reinforced with glass fiber is used for heating systems and hot and cold water supply systems, with a temperature range of up to +95 C o. This pipe is made with reinforced mesh for greater strength and less heat transfer. Working pressure 2.5 MPa.

Application area polypropylene pipes- mainly - heating, plumbing, and technological installations.
Polypropylene pipes characterized by strength, absence of corrosion, resistance to aggressive environments. Simple installation using sleeve welding, easy transportation. Subject to operating conditions, the service life of these pipes is at least 50 years.

Single-layer pressure pipe made of random copolymer polypropylene with a maximum design pressure in the system not higher than 2 MPa. Recommended use is cold and hot water supply and low-temperature heating, including the transportation of drinking water. Operating temperature – up to 70°C. Service life up to 50 years. * *see operating requirements according to GOST 32415-2013 Pipe PN20, often used in residential, commercial and industrial buildings, private construction, in hot and cold water supply systems. Pipeline made of polypropylene "Random copolymer" complies with GOST 32415-2013. The special production technology plus the properties of the manufacturing material contribute to the creation of a reliable pipeline system with an extended service life of up to 50 years, withstanding a nominal pressure of 2 MPa. For use in multi-purpose buildings for transporting hot water, technical non-aggressive gases, and liquids, SLT AQUA recommends buying polypropylene pipe PN 20 in Moscow from high-quality raw materials! Nominal diameter, mm Article No. Wall thickness, mm Internal diameter, mm Weight, kg/m Packaging Price Length of section, m* Number of sections, pcs. 20 4SLTPS620 3.4 13.2 0.17 4 25 34.87 25 4SLTPS625 4.2 16.6 0.27 4 25 58.31 32 4SLTPS632 5.4 21.2 0.43 4 15 98.71 40 4SLTPS640 6.7 26.6 0.67 4 10 155.87 50 4SLTPS650 8.3 33.2 1.04 4 6 245.83 63 4SLTPS663 10.5 42.0 1.66 4 4 385.58 75 4SLTPS675 12, 5 50.0 2.34 4 3 577.67 90 4SLTPS690 15.0 60.0 3.37 4 2 852.53 110 4SLTPS6110 18.3 73.2 5.03 4 1 1306.01 * cut length can be requested upon request be from 1.5 m to 6 m The pipe is produced according to TU 2248-001-17207509-2015. The company's pricing policy The gradual displacement of similar products made from metal from the market is due not only to the distinctive characteristics and performance properties, but also to the affordable cost. In conditions large quantity production facilities, the use of domestic raw materials, the company sets a price for the product that will attract the attention of potential distributors. The price of PPR PN20 polypropylene pipe is one of the most affordable on the market. Scope of application Polypropylene pipelines are many times superior to metal structures due to improved physical and mechanical properties. This key point played a role in expanding the areas of use of polypropylene pipes: civil, commercial, industrial construction; transportation of drinking water, process water; irrigation system; transportation of compressed gas. Basic properties Defining specifications polypropylene PP-R pipes PN20 look like this: operating temperature range – 70 °C (determines the use for a heating system); thick wall – from 3.4 mm; outer diameter – 20 mm; resistance to aggressive biomechanical influence. Reliable partnership Certified, tested products from the manufacturer SLT AQUA can be purchased at best price per meter from any official distributor of SLT AQUA. We make pipes conscientiously, reliably, and we confirm the results with a guarantee. Are you aiming for a long-term relationship? Call!