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Pipes ppr 20 for heating. Polypropylene pipes (catalog). Glass fiber reinforced PPR pipe PN25

Polypropylene products belong to the group of environmentally friendly pure materials. They are more attractive steel products lower cost and weight, and superior to metal-plastic options in strength and durability. More wide area applications for parts marked PN 20, so they are more in demand compared to other options on the market. Let's take a closer look at the technical characteristics of the PN 20 pipe, the properties of the material, its pros and cons.

Features of the material

The material from which the PPR PN 20 pipe is made is random polypropylene copolymer (third type). It was invented relatively recently, which made it possible to use products in high-temperature conditions. The main features of the material include:

1. High resistance to direct exposure to acidic and alkaline solvents.
2. High plasticity, thanks to which products can easily withstand freezing and thawing of moisture inside them.
3. The temperature range for using parts made from this material has been expanded – from 10 to 90˚С.
4. The material is absolutely non-toxic, therefore it is successfully used for assembling systems drinking water supply.
5. When processing and recycling parts, no environmentally harmful substances are released.

All these distinctive features were obtained by adding ethylene molecules to the polypropylene molecular chain. By modifying its structure, the indicators of ductility, viscosity and temperature strength were improved.

For self-installation systems will need to purchase a special welding machine. The connection of segments using it is most hermetically sealed and reliable.

Varieties

The pipe in question, marked PN 20, is produced by manufacturers only in a single form and does not have any variations. But you can often hear about purchasing or using reinforced pipe PN 20. In fact, this type of product is produced under a different marking - PN 25. It received the status of a reinforced analogue by mistake, since the external parameters of the products are the same.

The wall thickness of the pipes under these markings will be the same for all existing diameters, but their weight will vary. The heaviest parts are those with an aluminum reinforcing layer, those of medium weight are those with a layer of fiberglass, and the lightest are those that have no reinforcement at all.

Pipes also differ in their maximum permissible temperatures. working environment and working pressure. So for PN 20 models permissible temperature no higher than 80˚С. For parts reinforced with glass fiber, this figure is higher – 95˚C. U aluminum reinforced parts, short-term exposure to coolant with a temperature of 100˚C is allowed. Maximum operating pressure for non-reinforced models it is 20 atmospheres, and for reinforced ones it is 25 atmospheres.

Scope of application

PP PN 20 pipe is used for various purposes.

1. As a water distribution mechanism in residential, industrial, administrative buildings and agro-industrial complexes.
2. For laying water supply (hot and cold) indoors and outside buildings.
3. For installation of "warm floor" systems, which are placed in niches under the floor covering, or recessed into concrete screed.
4. As connecting segments for connecting radiators to the heating system.
5. For distributing a heating system in rooms where the maximum temperature does not exceed the permissible value for the material used.
6. For connecting heating systems to boiler systems.
7. As systems transporting compressed air or harsh chemicals.

Do not bend the products. All turns are performed strictly at right angles using adapters and couplings.

Specifications

The marking is deciphered as follows: PPR - random polypropylene (improved third type), PN - nominal pressure. Technical characteristics of PPR PN 20 pipe:

1. Linear expansion coefficient (1/˚С) – 12.7*10-5.
2. Thermal conductivity coefficient (W*m/˚С) – 0.238.
3. The maximum permissible temperature is 80˚С (to increase the service life of products, it is recommended not to exceed 70˚С).
4. The maximum permissible pressure is 2 MPa (1 MPa = 10 atmospheres).
5. The wall thickness with a product diameter of 20 mm is 3.4 mm.
6. The weight of one meter of a product with a diameter of 20 mm is 170-175 g.

Product advantages

The choice of PN 20 pipe is influenced by its many positive qualities. We list the main advantages:

1. Lower cost and weight compared to traditional metal products.
2. Simple and fast system installation process. Socket welding reliably and hermetically connects the segments (10-15 seconds are spent heating the parts).
3. The elasticity of the material allows the products to be used for assembling underfloor heating systems and laying plumbing in unheated areas.
4. The material from which the parts are made is non-toxic and resistant to chemical attack.
5. The inner walls are resistant to corrosion, and smooth surface prevents plaque formation.
6. Resistant to temperature changes and pressure surges.
7. Low thermal conductivity material eliminates the risk of condensation forming on the surface of the system.
8. High level sound insulation reduces the noise of the system.
9. Resistance to aggressive environments, which reduces the cost of additional protective measures (painting, priming and other procedures).

The service life of parts in a heating or hot water supply system is 25 years. The service life of parts in a cold water supply system is twice as long

Technologically correct installation of the system, high-quality connection of its segments to each other and compliance with operating rules will significantly increase the service life of the water distribution mechanism.

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

• for supplying drinking water,
• in cold water supply,
• for filing hot water,
• in central heating of 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 is very convenient if only cold water will be supplied through the pipeline, since a thin-walled product requires the least amount of 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). Working pressure in PN 16 pipes is 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 makes it possible to transport liquids more high temperature.
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 pipes (PPR - Russian name, PPR - international name) are plastic water pipes those who replaced steel pipes in water supply and heating systems. PPR pipes are lighter and cheaper than steel ones, they are installed much faster and easier, it is possible to carry out hidden installation, and they give the room a more aesthetic appearance. Polypropylene pipes have high chemical and corrosion resistance to the liquid transported in them - tap water. Pipelines are assembled in unified system by diffusion welding using fittings: angles, tees, couplings, transitions and others. In polypropylene water supply systems, permanent connections are used; pipelines are mounted using a special soldering iron, and after assembly they turn into a monolithic, non-dismountable structure. Polypropylene pipes can be easily connected with metal pipelines and shut-off valves using transitions to a threaded or flanged connection. Pipelines made of polypropylene have a long service life (20-50 years), this advantage allows them to be used for open laying, laying on the wall, hidden laying, without additional protection against corrosion. For hot water supply and heating systems, a heat-resistant type of polypropylene is used - random copolymer (labeled as PP type 3 or PP Type 3).

Pipelines made of this material are designed for a long service life (25-50 years) under the influence of liquid temperatures up to 95°C, while emergency temperatures of about 100°C resulting from short-term malfunctions do not reduce the service life.

For all PPR pipelines and fittings in contact with drinking water, comply with the current standards of Russia, Belgium, Germany, Great Britain, Italy, Spain, USA and other countries.

Pipes (Fig. 20) are divided into categories:

PN 10- thin-walled pipe, designed for cold water supply (up to +20°C) and heated floors (up to +45°C), nominal operating pressure 1 MPa (10.2 kg/cm²);

PN 16- for cold and hot water supply (up to +60°C), nominal operating pressure 1.6 MPa (16.32 kg/cm²).

PN 20- pipe, used for hot water supply (temperature up to +80°C), nominal pressure 2 MPa (20.4 kg/cm²);

PN 25- reinforced with aluminum foil, for hot water supply and central heating(up to +95°C), nominal pressure 2.5 MPa (25.49 kg/cm²).

Polypropylene pipes PN10

PPR pipes PN 10 are intended for cold water supply systems for transporting liquids (to which polypropylene is chemically resistant). Pipes of the PN 10 brand are a lightweight type of pipe; they have a thinner wall, which means lower production costs and low cost. These pipes are used exclusively for cold water, designed for a working pressure of 10 atmospheres.

Polypropylene pipe PN20

The PN 20 pipe is used in cold and hot water supply systems in residential and industrial buildings. The color of the pipe is white and gray. The installation method is socket, carried out by welding using a special welding machine.

Material: PPRC polypropylene, Working medium temperature (maximum): 80 o C, Maximum permissible working pressure 2.0 MPa (20 atmospheres), Pipe length: 4 m.

Pipe PPR reinforced fiberglass PN25

PPR pipe reinforced with glass fiber PN 25 is used for installation of cold and hot water supply, heating, process pipelines food and chemical industries. These pipes consist of three layers, the inner and outer layers are Random Copolymer PPRC polypropylene, and the inner (reinforcing) layer is a mixture of fiberglass and polypropylene. Fiberglass reinforced pipe does not require stripping when welding with fittings. The glass fiber reinforced pipe has a maximum permissible operating pressure of 2.5 MPa (25 atmospheres), Working environment temperature (maximum) 95 o C, Manufacturer: SPK.

Pipe PN 25 reinforced with aluminum (SPK ALLUMINIUM)

Polypropylene pipe SPK ALLUMINIUM PN 25 is used for installation in heating systems, hot and cold water supply pipeline systems. SPK ALLUMINIUM pipe is special pipe reinforced with aluminum foil, which is located inside the pipe wall, between two layers of polypropylene, internal and external. Thanks to this production technology, the SPK ALLUMINIUM pipe does not require stripping, which significantly speeds up and facilitates the installation of the system, unlike pipes reinforced with aluminum outside(discussed below).

The maximum permissible operating pressure is 2.5 MPa, the maximum temperature of transported water is 95 o C, short-term 100 o C, Produced at the SPK plant in Turkey. SPK Aluminum pipe with internal reinforcement has White color and is characterized by high quality and low linear expansion coefficient.

Reinforced polypropylene pipe PN20 (Kalde) (requires stripping)

Reinforced polypropylene pipe is used in cold and hot water supply systems, heating systems, water treatment in residential, administrative and industrial buildings. The disadvantage of this type of pipes: before carrying out welding work it is necessary to remove the reinforcing layer from the pipe aluminum foil special cleaning tool. Pipes with external (classical) reinforcement remain the strongest, have the lowest linear expansion rate and are available with a diameter of up to 110 mm.

The reinforced pipe with a maximum permissible operating pressure of 2.0 MPa (20 atmospheres) has the following characteristics: working medium temperature (maximum): 95 o C, produced in sections of 4 meters, aluminum layer thickness 0.15 mm.

Reinforced pipe PN25 (Kalde) (requires stripping)

Reinforced polypropylene pipe PN 25 is used in cold and hot water supply systems and heating systems. Before carrying out welding work, it is also necessary to remove the reinforcing layer of aluminum foil from the pipe with a special stripping tool.

Reinforced pipe PN25 made of PPRC polypropylene, designed for a Maximum permissible working pressure of 2.5 MPa, Working environment temperature (maximum): 95 o C, Country of origin: Turkey, Manufacturing plant: Kalde, Pipe length: 4 m. Currently, this pipe is not very popular.

   Polypropylene pipes - one of the types plastic pipes. The polypropylene material used for their manufacture is produced by polymerization with the participation of catalysts made of metal complex materials. The pipes produced by the enterprises are manufactured mainly of two types: for a pressure of 10 bar - this pipes PN 10(designation PPR PN10 is allowed), and for a pressure of 20 bar - polypropylene pipes PN 20 (PPR PN 20).

Pipes for a pressure of 10 bar have thinner walls, and, therefore, their price is lower. They are used for not very loaded systems, with low pressure. Although tests show that PN10 pipes able to withstand short-term pressure of 30 bar. The pipes are connected to each other using welding (sometimes this process is called soldering) using a special apparatus. In this case, the metal mandrels supplied with the device are heated to a temperature of about 300 degrees, a PPR PN10 pipe and a polypropylene fitting are inserted into these mandrels, softened and then connected, after which, after some time, when the material has cooled, a welded joint is obtained. Such a connection, if made without violating technology, is not inferior in strength to an all-propylene structure.    They are mainly used for cold water supply. Since under the influence of hot water these pipes, due to their thin walls, will bend. For hot water supply, PN20 pipes are used, mostly reinforced. The property of polypropylene pipes, including PN10 pipes, to withstand accidental freezing of water in them during some kind of accident, has made them indispensable when carrying out water supply work in places where such a situation is possible. After the accident is eliminated, the pipes can continue to operate without any additional restoration work.    The main advantages of polypropylene pipes are as follows. The low weight, especially of thin-walled PN 10 products, compared to metal pipes, makes installation easier and saves on delivery of products to the site. Installation is also simplified due to the fairly simple and quick connection of such a polypropylene structure with fittings using a simple electrical device that is accessible to every developer. Very smooth inner surface, which is close in its characteristics to the most “slippery” material, fluoroplastic, does not allow overgrowth with various mineral and other deposits internal walls PN10 pipes. Long term service, estimated in tens of years, reduces the number of regulatory and repair work on a pipeline made of polypropylene pipes. Due to the great flexibility of such products (especially for small-diameter pipes), laying a network from them is characterized by a significantly smaller number of

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, inner 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 for installation and reconstruction. engineering communications 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. 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 of environmentally friendly materials. The main properties in accordance with GOST are given in the table.

GOST	Parameter	Index
	Thermal conductivity, at +20 ° C
	Density
	Heat capacity at +20 ° C (specific)
	Melting
	Tensile strength (at break)	34 ÷ 35 N/mm 2
	Yield Strength Elongation
	Yield strength (tensile)	24 ÷ 25 N/mm 2
	Expansion coefficient

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.

	Characteristic name	Values ​​for polypropylene pipes: dimensions
	Inner Ø
	Specific heat capacity	1.75 kJ/(kg K)
	Ø tolerance
	Linear expansion, (1/ 0 C)
	Heating time during welding
	Roughness coefficient (equivalent)
	Cooling time, (seconds)
	Tensile strength
	Normative series
	Elongation at break (relative)
	Weight (kg/linear meter)
	Tensile yield strength
	Melt flow index PPR	0.25 g/10 min
	Thermal conductivity	0.15 W m/ 0 C
	Heating time during welding
	Modulus of elastic layer PPR
	Depth of the pipe socket (minimum) when welding
	Pipe density (equivalent)
	Volume (internal) linear meter/l
	Modulus of elastic layer PPR + fiber
	Dimensional ratio (standard)
	PPR Density
	Pressure (nominal), PN
	Welding time

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 characteristics given above 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 was made possible thanks to special technology processing of 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. Particular attention should be paid to the heating time of polypropylene pipes when they are connected 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 does not contribute to an increase in temperature, it does lead 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 is used for 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 water temperature +20 ˚С: service life– 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. The maximum service life 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 is a relatively difficult process. The quality is affected not only by the heating time, but also by violation of soldering rules. They are as follows:

during operation, the welding machine must be constantly heated;

Marks must be applied to the pipes in order to ensure the proper depth of the 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 is a supplier engineering plumbing in Russia since 2004.

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

quality products for reasonable prices;

constant availability of products in stock in any quantities;

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

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

delivery of goods to the regions via 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 you choose plumbing equipment both individuals and companies. You just need to contact us by phone: