Various materials may be used. Today, plastic pipes for plumbing are quite popular, the sizes and prices of which can vary in a fairly wide range. It can be difficult to make a choice in favor of a particular product. We offer you to get acquainted with the features of plastic fittings, its cost and recommended area of use.
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Normative and technical documents
Pipes used for plumbing must meet certain regulatory requirements. GOST 25151-82 establishes general requirements for a water supply system. Hygienic requirements for drinking water and the procedure for passing control are regulated by GOST 2874-82. Polyethylene products are manufactured in accordance with the requirements of GOST 18599-2001, PVC products - GOST R 51613-2000. There are other regulatory and technical documents that determine the procedure for installing a water supply system and presenting certain requirements for the installation work. The parameters of non-pressure devices are regulated by building codes.
Main characteristics
When choosing products for plumbing, you should focus on their characteristics. The parameters of purchased products depend on the installation location. We offer you to get acquainted with the characteristics that should be taken into account when buying materials for plumbing.
Diameters of plastic pipes for water supply and other overall dimensions
In accordance with the regulatory requirements for plastic pipes, 34 standard sizes have been established in the range of 10–1600 mm. Non-pressure products with a diameter of 50–110 mm and a length of up to 8 m are most widely used. The wall thickness is usually 3.2 mm. For pressure structures, the diameter can be 63–315 mm.
The main overall dimensions of plastic products for water pipes include:
- Inner diameter.
- Nominal diameter.
- Wall thickness.
- Length.
When choosing transverse dimensions, the installation location is taken into account. For an external system, products with a diameter of 32–100 mm are selected. For the inside, you can purchase material with a smaller cross section. For vertical risers, a diameter of 32 mm is sufficient; for horizontal segments, plastic pipes for water supply with a diameter of 16 or 25 mm can be purchased.
Weighted
The weight of a linear meter depends on the characteristics of the material used and the linear dimensions of the pipe itself. On average, a linear meter of a product with a diameter of 16 mm weighs about 100 g, a meter with a diameter of 25 mm weighs a little more than 200 g.
Advice! To find out the approximate weight in kg, you should find the volume (in m³) and multiply the resulting value by 950.
Strength
For water pipes operating under, the strength characteristics of the plastic used have a fundamental pressure. The products used must withstand the pressure created inside the plumbing system, as well as the external pressure created by the ground.
Attention! For plastic pipes with high strength characteristics, the price will be higher.
Temperature
The maximum operating temperature is determined by the characteristics of the material from which the water pipe is made. If for polyethylene it is only + 45 ° С, then for cermets it reaches + 95 ° С.
Advantages and disadvantages
Plastic pipes for water have a number of undeniable advantages:
- long service life;
- low noise level;
- light weight. Plastic pipes are easier to install and easier to transport;
- the absence of corrosion processes characteristic;
- sufficient strength characteristics. Quality products can be used for plumbing, operating under a sufficiently high;
- resistance to a number of aggressive substances;
- absence of deposits on the inner surface;
- low thermal conductivity;
- environmental Safety. Plastic products have no harmful effects on human health or the environment;
- the possibility of forming a water pipe of the desired configuration due to a wide range of fittings and fittings
The disadvantages include:
- the complexity of the installation work due to the need to use special fittings;
- maximum temperature limit that must not be violated;
- different requirements for the installation of pipes made of different materials.
Applications
Plastic pipes have a wide range of applications. They are used not only for plumbing, but also for other systems. We offer you to get acquainted with the main area of \u200b\u200buse of such products and their distinctive features.
Water pipes
The molded structure has a long service life. Various materials can be used for its manufacture, depending on the purpose and place of work. For domestic purposes, mainly polyethylene, polypropylene are purchased. In industrial enterprises for collective use, products made of polyvinyl chloride are used. The features of the listed materials and the recommended area of \u200b\u200buse are discussed below.
Sewerage
For the device, pipes made of PP, PVC, PE can be used. Standardized dimensions make it possible to use various plastic sewer pipes. The dimensions and prices of such products are closely related: the larger the transverse dimensions, the higher the throughput and cost.
The choice in favor of plastic pipes is made due to:
- resistance to aggressive environment;
- optimal strength characteristics. They are able to maintain their integrity at a meter depth;
- low roughness, which reduces the likelihood of blockages and sediment on the inner surface;
- light weight;
- availability;
- simple installation.
Plastic pipes for heating
The choice in favor of a plastic contour for is made due to:
Before purchasing plastic, you should decide on the optimal diameter and type of system. The throughput of the system and the level of heat loss will depend on this. If the bandwidth is sufficient, it will be possible to abandon the branched system. When installing a heating circuit with, plastic pipes with smaller transverse dimensions are selected: 8–10 mm. For systems with natural circulation, products with a large cross section will be required.
Related article:
Advantages and disadvantages of polypropylene, market overview and pipe selection criteria, the basics of designing a heating system - read in our publication.
Types of pipes for water supply
For the manufacture of long products, materials with different characteristics are used. We offer you to get acquainted with the existing types of pipes for water supply and their features, so that it is easier to choose the material for your water supply.
Polyvinyl chloride PVC pipes for water supply
Products made of polyvinyl chloride have sufficient strength and are able to withstand exposure to low temperatures. PVC pipes for water have a number of undeniable advantages:
- are not afraid of external negative factors and chemicals;
- allow you to form a water supply system of any configuration due to the availability of a large assortment of fittings;
- long service life;
- low thermal conductivity.
Due to the formation of a tight connection, it is possible to use PVC pipes for water supply, arranged on floating ground.
Polypropylene pipes for water supply
Products from differ in resistance to influence of active chemicals. They install fairly quickly. Installation work can be done by hand. Eco-friendly. They have a long service life.
High rigidity for plumbing forces the use of a lot of rotary when installing the system. Under the influence of high temperature, they undergo significant deformation. To avoid negative consequences, thermal compensators are provided.
Manufacturers offer products of three types:
- PN 10- for the installation of a cold water supply system and;
- PN 20− for hot water supply. Universal products that allow heating up to +80°С;
- PN 25 with a maximum operating temperature of +95°C.
To increase the strength characteristics and stabilize the parameters, PN 25 are reinforced with fiberglass or aluminum foil. The reinforcing layer may be formed internally or externally.
Metal polymers
Metal-plastic products consist of three layers: PE-X polyethylene, a thin layer of aluminum and another layer of PE-X polyethylene. Plastic with a metal layer is connected using a special adhesive composition. The polymer which is a part of material gives them sufficient flexibility and smoothness. The aluminum layer provides sufficient strength and reduces the amount of thermal expansion when heated. Metal polymers are able to withstand heating up to +95°C. They are light in weight. Not afraid of aggressive environments. Water moving through the water supply creates a minimum of noise.
The disadvantages of the metal polymer should include:
- combustibility;
- low resistance to ultraviolet radiation;
- high probability of delamination of the product;
- limited choice of sizes;
- low impact resistance.
To connect the elements of the water supply to each other, compression or press fittings are used, which are characterized by a high cost.
Low pressure polyethylene HDPE
There are two types: for technical and drinking water. Due to their good elasticity, they are sold in coils, which can significantly reduce the number of plastic fittings used. Retains characteristics when cooled down to -50°С. Has a long service life.
Comment
Ask a Question“HDPE pipes are not suitable for hot water systems, since their operating temperature should not exceed +45 ° C.”
Cross-linked polyethylene (PEX)
The processing of polyethylene under high pressure allows you to qualitatively change the structure of the material. The resulting spatial structure endows plastic pipes with improved mechanical properties. Products made of cross-linked polyethylene are characterized by high strength characteristics and are able to withstand high temperatures (up to +95°C). They can be used for hot and cold water supply systems. When installing a water supply system, compression fittings are used.
Which pipes are best for plumbing
Plastic products are gradually being replaced by other materials. When deciding which pipes for plumbing are better, you should take into account the functional features of the system being installed. Polypropylene products are suitable for hot water supply. XLPE pipes have similar functions, however, its price for the same size will be much higher. Metal-plastic products are superior in performance, but their price will be even higher.
Locksmith for the operation of water supply and sanitation systems of OOO GK Spetsstroy
Ask a Question“If there are a lot of turns and bends, you should stop buying small plastic pipes. This will avoid problems with pressure and flow."
When installing plumbing communications outside the house, you should immediately take care of. The performance of the water supply system will depend on the quality of thermal insulation work. Thermal insulation materials are selected taking into account the location of the house and the depth of the water supply.
Do-it-yourself installation of plastic pipes for plumbing
When starting the installation of plastic pipes for plumbing with your own hands, you should carefully read the order of work. The sequence of actions depends on the type of material used. The connection of polypropylene pipes is performed as follows:
| Illustration | Action Description |
 | The material of the desired size and special is being prepared. We heat the equipment to operating temperature. |
 | We heat the joined parts for 15 seconds. Do not rotate while heating. |
 | We connect the fragments with each other, providing the required spatial position. |
Installation of PVC pipes can be carried out using several technologies:
- by cold welding, in which it is necessary to use a special chemical composition;
- through the use of special fittings if you have to connect fragments made of different materials to each other;
- in a grooved way. This method is relevant for the sewerage device.
How to thaw a plastic water pipe in the ground
If the level of insulation is insufficient, the water supply system may freeze in winter. If this happens, you need to know how to warm the plastic water pipe in the ground so as not to cause damage to it. You can do this in the following way:
- disconnect the plastic pipe from;
- heat up a large volume of water;
- insert a hose of smaller diameter inside the pipeline. Its length must be sufficient to reach the ice plug;
- we supply heated water from the container inside the hose. The process can be accelerated by using an injection;
- we move the hose inside the water supply as the ice melts.
Instead of a hot pipe, you can use the heat generated during the passage of electricity through the conductor. However, this method requires certain knowledge and careful observance of safety precautions.
Plastic pipes are the common name for products made of polyethylene, polypropylene, polyvinyl chloride and metal polymers, which are used to create water supply systems for apartments and houses. The industry produces such samples in a large assortment for the installation of structures in various conditions. The article provides information about popular types of plastic pipes for water pipes, which will be useful to users.
- Read a separate article about
Features of plastic water pipes
Plastic pipes were created from polymers thanks to the development of modern technologies. They are gradually replacing metal counterparts due to improved performance. There are several types of plastic pipes that differ in properties and installation methods (see table below).
| Material | Application | Distinguishing properties |
| PVC | After installation, a rigid structure is formed | |
| Polypropylene | Supply of cold and not very hot water outside and inside buildings | Pipes consist of three layers, have a large linear expansion, are not flexible enough for a complex route |
| Polyethylene | For supplying cold water outside and inside buildings | Very flexible products, performance deteriorates at low and high temperatures |
| Metal polymer | Supply of cold and hot water outside and inside buildings | Retain their shape after bending, withstand very high pressure |
Despite the different properties of the materials from which the pipes are made, the products have much in common:
- With proper installation and maintenance, the operation of systems made of plastic pipes can last 50 years, which many times exceeds the service life of metal counterparts.
- The cavities are not clogged with salt and other deposits, the surface does not rust. But this does not guarantee perfectly clean tap water, so the presence of a filter at the outlet of the system is mandatory.
- Products are light, 3-10 times lighter than metal ones. They do not create special loads on other structures.
- Modern samples are made of environmentally friendly material that does not pollute the soil and does not impair water quality.
- Dense material dampens fluid flow noise.
- Installation of a water supply system from such products is simple, it can be done without outside help.
- Pipes can be laid along any route, and no complex equipment is required for turns.
- They tolerate large temperature fluctuations well, do not burst when frozen and do not swell when heated.
- Products do not require special conditions for storage and transportation.
- The price of plastic pipes for water supply, compared with metal samples, is low.
In order for the system to operate as long as possible, when choosing products, follow our recommendations:
- Before starting work on the construction of a water supply system, develop a layout of pipes on the site, which will take into account all the subtleties and nuances of the environment. It will be possible to determine the amount of consumable material, the diameter of the samples, the type of product that is best suited for a particular case. Consider the length of the blanks with a margin, taking into account possible marriage.
- Before you buy plastic pipes for water supply, study their main characteristics: diameter, thermal expansion, working pressure, liquid temperature, chemical resistance. The service life of the system depends mainly on the combination of pressure of the working medium and its heating. The higher they are, the faster the structure will fail. If the pressure is low and the temperature is high (or vice versa), the water supply will last as long as possible. Manufacturers guarantee a long service life of the system even at a water pressure of 4-5 atmospheres and a temperature of 65-70 degrees. In some types of pipes, for example, polypropylene, the wall thickness of the product affects the service life.
- When buying, find out the linear expansion of the samples, especially if they are used in a hot water system. For example, 1 meter of a polypropylene pipe increases in length by 9 mm when heated to 60 degrees. Therefore, foresee the possibility of free movement of the constituent elements. Otherwise, internal stress can damage the structure.
- Metal-plastic products practically do not elongate when heated, but there may be a problem with the fittings that connect adjacent cuts. Therefore, there should always be access to the joints of parts to control their condition.
- The throughput of the system depends on the diameter of the pipe. For ordinary plumbing, buy products with a diameter of 11 to 21 mm, for risers - more than 25 mm.
- The size of plastic pipes for plumbing is also affected by the number of turns and bends in the design. If there are few flat areas, add samples of a larger diameter so that there are no problems with pressure and fluid supply.
- Plastic pipes that are planned to be used outside the building must be insulated. The method of thermal insulation and material is selected depending on the climatic zone and the average temperature in winter.
- Products have great strength, but with an illiterate assembly of the line, even they will collapse. In most cases, trouble occurs in extended systems in which there are no temperature compensators.
Dimensions of plastic pipes for water supply
Plastic pipes for water supply are made from petroleum products and their derivatives. However, despite the common raw materials, there is no universal brand of products. At the production stage, special additives are introduced into the composition that change the properties of finished products.
On the territory of the CIS, 4 types of plastic pipes for water pipes are produced according to their own GOSTs: metal-plastic, polypropylene, polyvinyl chloride and polyethylene. Each species has its own range of sizes, shown below.
The dimensions of plastic pipes for water supply are presented in the table:
| Pipe type | GOST | Application | Diameter, mm | Wall thickness, mm |
| Polyethylene (PE) | GOST 18599-2001 | Light pipes | 20-110 | 2,0-29,3 |
| Medium pipes | 2,0-45,3 | |||
| heavy pipes | 2,0-45,5 | |||
| Polyvinyl chloride (PVC) | GOST R 51613-2000, GOST 32412-2913 | Drainage from bathtubs and sinks | 10-315 | 1,8-6 |
| Toilet drain | from 100 | |||
| Drain from washing machines | 25-32 | |||
| metal-plastic | - | Plumbing installation | 15,20 | 2 |
| Sewerage | 40,48 | 3, 9,4 | ||
| Polypropylene (PP) | GOST 32415-2013 | Internal communications | 40, 50, 110 | 8,1 |
| External communications | from 150 | 32,1-35,2 |
Varieties of plastic pipes
Plastic pipes for plumbing differ among themselves in physical properties due to different chemical compositions of materials. A brief description of the products most used in systems is given below.
PVC pipes
They are the first plastic pipes that have been used to create plumbing structures. Marked with letters PVC or PVC. They have an aesthetic appearance that allows you to lay branches without masking. Installation can be carried out in an open and closed way. These pipes are inexpensive.
Additives are often introduced into the composition of the material, changing the properties of pipes and increasing their scope. Products do not burn well, have high chemical resistance.
The wall thickness of PVC pipes for water pipes (GOST R 51613-2000, GOST 32412-2913) is presented in the table:
| Diameter, mm | Wall thickness (S), mm |
| 10 | 2 |
| 12 | 2 |
| 16 | 2-3 |
| 20 | 2-3,4 |
| 25 | 2-4,2 |
| 40 | 2-5,4 |
| 50 | 3-8,3 |
| 63 | 3,8-10,5 |
| 75 | 4,5-12,5 |
| 90 | 5,4-15 |
| 110 | 6,6-18,3 |
They are allowed to operate in all climatic conditions, but it is recommended to use in a cold environment. They are not intended for hot water supply, as melt at a temperature of + 50 + 60 degrees. The optimum temperature for operation is up to +45 degrees. In cold weather they become brittle.
Unlike other types, cuts can be joined together with sanitary glue and rubber cuffs, which are installed in special grooves. However, the pipes are quite rigid, you can change the direction of the route only with the help of corners.
Conduits that tolerate low or high temperatures well are collected from samples made from chlorinated polyvinyl chloride (CPVC). Products from this material can even be used to supply hot liquid to radiators.
Polypropylene pipes for plumbing
They belong to universal designs that are not afraid of cold and hot water. Pipes are produced with a diameter of 16-125 mm. Sold in pieces 4 m long, regardless of diameter. They are PP marked.
These are light and durable samples, produced in two versions - with or without reinforcement. Single-layer products are very flexible and soft, therefore their use is limited to use in low-pressure systems for supplying cold water. To get rid of this drawback, manufacturers began to produce pipes with reinforcement, which are distinguished by a multilayer structure. The inner layer is a thick-walled polypropylene pipe, the middle layer is aluminum foil, the outer layer is a protective layer of polypropylene. Such samples are used both for watering the site and for creating a water system inside the house.
Polypropylene pipes are produced in three types, designed for a pressure of 10, 16, 20 atmospheres, which can be distinguished by the wall thickness. Also on sale there are products with improved thermophysical properties.
The wall thickness of polypropylene pipes for water pipes (GOST 32415-2013) is presented in the form of a table:
| Diameter, mm | Wall thickness (S), mm |
| 10 | 2,0 |
| 12 | 2,4 |
| 16 | 3,3 |
| 20 | 4,1 |
| 25 | 5,1 |
| 32 | 6,5 |
| 40 | 8,1 |
| 50 | 10,1 |
| 63 | 12,7 |
| 75 | 15,1 |
| 90 | 18,1 |
| 110 | 22,1 |
| 125 | 25,1 |
| 160 | 32,1 |
The parts are connected by thermal welding, after which the entire line turns into a monolith. Installation of a water conduit made of polypropylene pipes must be carried out carefully, because the welding procedure is very responsible - the material is easy to overheat. After exposure to elevated temperatures, the strength of the structure decreases.
Polypropylene pipes have different colors - gray, white, black, green, which indicate the difference in their characteristics. For example, blacks tolerate ultraviolet well.
A significant disadvantage of polypropylene structures is their rigidity - the assembled line bends weakly. To change the direction of the route, use corners and tees.
Polyethylene pipes
Marked with the letters RE. The diameter of plastic pipes for this type of water supply is in the range of 15-160 mm. Blanks are sold in coils of 10 m or cuts of 12 m. Long blanks allow you to create sections without joints and increase the tightness of the structure.
The industry produces high pressure pipes (HPV) and low pressure pipes (HDPE). HDPE products are used for drinking water supply. They are easy to identify by their black color. Sometimes there are specimens with distinctive blue stripes on the surface. Polyethylene acquires black color after adding light stabilizers and soot to its composition, which increase the resistance of pipes to sunlight.
Wall thickness of polyethylene pipes for water pipes (GOST 18599-2001):
| Diameter, mm | Wall thickness (S), mm |
| 10 | 2,0 |
| 12 | 2,0 |
| 16 | 2,0 |
| 20 | 2,0 |
| 25 | 2,3 |
| 32 | 3,0 |
| 40 | 3,7 |
| 50 | 4,6 |
| 63 | 5,8 |
| 75 | 6,8 |
| 90 | 8,2 |
| 110 | 10,0 |
Products can be mounted in systems for any purpose, but they have proven themselves especially well for supplying cold water (0 ... + 40 ° C). High temperatures increase their flexibility, which can cause the branch to break. At -20°C the material becomes brittle. This property must be taken into account when using the system in winter.
Products made from this material are very elastic, and they are easy to assemble. However, the assembly of polyethylene pipelines has its own characteristics associated with a change in the properties of the material with decreasing temperature. It is not allowed to assemble the system if the air temperature is less than +5 ° C. The samples are connected to each other using electric welding and compression fittings.
One of the modifications of polyethylene is called cross-linked polyethylene (PEX). Such pipes are produced under pressure, which improves their properties. In contrast to the first option, in cross-linked polyethylene, the linear sections are interconnected by cross-links, forming a three-dimensional mesh structure. The product has new qualities - increased mechanical strength, resistance to high temperature and frost, resistance to cracking, impact, chemical resistance. They are often used in hot water supply systems. Fittings are used to connect parts. The disadvantage of such pipes is the high cost. They produce pipes made of cross-linked polyethylene with a diameter of 12 to 315 mm.
Pipes made of metal polymers for water supply
Products have a multilayer structure: in the middle there is an aluminum or copper foil 0.2-0.5 mm thick, outside and inside - a plastic coating. The foil between the plastic gives strength to the product and reduces its thermal deformation.
To distinguish from other products, metal-plastic pipes are marked with the designation PEX-AL-PE or similar, depending on the composition of the layers. The first letters indicate the material of the inner layer, the last - the outer. In our case, the marking means that the pipe consists of cross-linked polyethylene, aluminum foil and ordinary polyethylene.
Products are produced with a diameter of 16-40 mm. They are marked in two sizes: 12-15 mm, 20-25 mm, etc. These values indicate the outer and inner diameter of the product and are needed to select a fitting for their joining.
The wall thickness of metal-plastic pipes for water pipes is presented in the table:
| Diameter, mm | Wall thickness (S), mm |
| 16 | 2 |
| 20 | 2 |
| 26 | 3 |
| 32 | 3 |
| 40 | 3,9 |
| 48 | 4 |
Pipes made of metal-plastic are designed for cold and hot water supply, withstand pressure up to 10 atm, slightly elongate with increasing temperature. They can be used for a long time at a temperature of +95°C and for a short time at +110°C. The blanks retain their new shape after deformation, which is very convenient when pulling along a complex route.
Such pipes are connected to each other in two ways:
- Press docking. It is distinguished by reliability and is used both for external laying and in a cavity or strobe. However, this method requires special expensive equipment.
- Collet connection. Reminds a way of fixing metal products among themselves. But due to temperature fluctuations, the joints weaken, and leaks may occur in these places. Therefore, after the first year of operation, it is recommended to additionally stretch the route of metal-plastic pipes with collet fixation of parts. Due to the low reliability, pipelines with collets are mounted on the surface or in places with a good approach to the joints.
The price of plastic pipes for plumbing
The cost of plastic pipes for water supply is influenced by many factors, but the following are considered the main ones:
- Manufacturing technology. Plastic is a modified plastic that is made from petroleum products. The individual properties of the material appear after the introduction of special substances into its composition using special technologies.
- Versatility. Products that are used only in cold water pipes are much cheaper than those that are not afraid of high temperatures.
- Distance from place of production to consumer. The pipelines have significant dimensions, so the cost of transportation is also included in the price.
- Workmanship. Most plastic pipes are connected by soldering, which requires great precision in the manufacture of pipelines and fittings. Such requirements are provided only with high-quality expensive equipment that large companies have. Well-known brands guarantee the high quality of their products, so their prices are always higher.
Prices of plastic pipes for water supply in Ukraine:
Prices of plastic pipes for water supply in Russia:
How to choose plastic pipes for plumbing - see the video:
Plastic pipes have filled a niche in the field of creating plumbing systems. They are more than successful in conquering the market, replacing short-lived and expensive metal products. With the right choice of blanks and compliance with the installation technology, they will not have to be repaired throughout the entire warranty period of operation.
polypropylene or polyvinyl chloride. For their manufacture, high-quality plastic raw materials are used. The final product fully complies with the requirements of GOST and TU, has the necessary certificates of conformity and sanitary and epidemiological conclusions.
PE pipe for water
HDPE (HDPE)
Plastic pipes for plumbing This material is very light. This property facilitates and reduces the cost of their transportation and installation. Standard methods of laying the system eliminate the cost of special equipment and additional staff training. HDPE has a high corrosion resistance, which also saves on pipe insulation. The price list can be found in the section -.
PEX cross-linked polyethylene
We offer hot water pipes made of PEX. A special technology of material compaction during the production process makes it possible to make them dense, increase their resistance to negative influences during operation in hot water supply systems. For the installation of this type of pipe, special fittings will be required.
LDPE high pressure polyethylene (LDPE)
LDPE pipes can perform household tasks, they can be used in the construction of wells, at construction sites. The flexibility of the elements makes it possible to use them in hard-to-reach places. Provide transportation of water without thermal losses. Absolutely insensitive to chemical influences.
Technical polyethylene
Pipes made of this material are used in non-pressure systems for technical water supply (drainage, storm and sewer systems, for melioration and irrigation). Ease of installation is expressed in the ability to use both welded and fitting method of connecting segments.
PVC water pipes
PVC for non-pressure systems
Plumbing PVC pipe high throughput, low toxicity, bacteria and fungi do not settle on their surface. Light weight, flexibility and ease of creating any type of connection - a guarantee of high speed installation of the water supply system.
PVC-U for pressure systems
Pipes for cold and hot water are made from PVC-U, which are distinguished by chemical and temperature resistance.
Polypropylene water pipes
Plumbing polypropylene pipe are not subject to wear in contact with microorganisms. Their installation is carried out with the help of glue, there is no need to use additional tools. This aspect, in addition to the low price, is considered the main advantage of pipes of this type. In addition, they are not subject to deformation, due to which they are used in hard-to-reach places. Such pipes are widely used in laying hot and cold water supply systems for domestic and industrial purposes. They have an attractive appearance, due to which they can be used for external installation.
Ways to connect water pipes
- method of contact-butt welding;
- using fittings with embedded electric heaters;
- compression fittings;
- with steel clamping flanges (detachable connection).
Advantages of ordering in Polymer Systems:
- Direct deliveries in Moscow
- Favorable prices for all types of pipes
- Production of non-standard pipes and fittings to order
- Thermal insulation of pipes, application of reinforcing materials
- Delivery of pipes and components to Moscow
- Sale of fittings and other accessories
We can always buy plastic pipes for plumbing the required size from any of the above materials. We carry out sales from the warehouse, as well as delivery to the customer's unloading point.
Plastic pipes are long products with a constant cross-sectional diameter, which are widely used to create water pipes, heating and sewage systems. The popularity of these products is due to the economical price, low weight and hygiene. Products are not subject to corrosion, do not react with aggressive environments and are characterized by low thermal conductivity, which helps to avoid heat loss during the transportation of hot water. The smoothness of the walls allows you to increase the speed of movement of the liquid by 30% compared to steel. Plaque does not accumulate on their surface, and the cross-sectional area remains unchanged throughout the entire service life. Because the walls remain clean, they are not a breeding ground for bacteria. The lightness of plastic structures simplifies and speeds up their laying. The disadvantages of plastic include lower mechanical strength and instability to ultraviolet radiation than metal. Polymers have a limited operating temperature range, which does not allow their use, for example, in steam heating.
Types of plastic products
To date, three types of plastic products are produced: from polyethylene, polypropylene and PVC. Polyethylene pipes are manufactured with a diameter of 20 to 160 mm, they can be used in the installation of pressure and non-pressure systems of residential, administrative and industrial premises. These products can withstand temperatures down to -20 degrees and are resistant to pressure drops in the water supply, but the temperature range does not allow them to be used for hot water and heating systems. When laying pipes in the ground, its mobility is of great importance, since polyethylene may not withstand the load.
Polypropylene pipes are characterized by a higher degree of rigidity and strength, but they bend much worse, which requires the use of more fittings. The advantage of this polymer is the ability to withstand temperatures up to 95 degrees, making such pipes suitable for the installation of heating systems and hot water supply. For this reason, polypropylene products are very popular, which is also facilitated by the affordable price of pipes and fittings. The products can be connected by welding and can withstand quite high pressure, therefore they are used in the construction of irrigation systems. Sewer polypropylene pipes for non-pressure systems are also produced. They are convenient in that they allow for tight docking with old cast iron products.
PVC pipes are significantly limited in use, since the material releases toxic substances after a certain period of operation, therefore, this type of product is mainly used when laying sewer systems. An important advantage of this material, which contributes to the scope of application, is resistance to aggressive environments. The products feature a wide range of sizes for pressure and non-pressure systems.
How are plastic products different from metal-plastic products?
All plastic products consist of one dense layer of material, that is, they are uniform. What is most important in thermal expansion. It is because of the difference in the indicators of this parameter that three-layer metal-plastic pipes begin to flow at the joints. The diameter of plastic products is practically unlimited and is 16-160 mm, while metal-plastic products are produced in the range of 16-63 mm. Due to the thicker walls, polypropylene pipes withstand greater pressure drops and have more favorable mechanical characteristics. The thermal conductivity of metal-plastic is higher, which is a plus for heating systems, but a minus in hot water systems. The advantages of metal-plastic structures are a wider temperature range and resistance to ultraviolet and atmospheric oxygen. Installation of a plastic water pipe does not require expensive equipment and is less time and effort consuming. Even beginners can install it.
The main task in the design and arrangement of the water supply system is to choose and buy pipes for water supply correctly. Non-metallic pipes, which are characterized by high performance, low weight and economy, will help to solve it.
Types of pipes for water supply
For the organization of the pipeline for household and drinking purposes, polyethylene and polyvinyl chloride pipes are used.
Polyethylene pipes
Products are made from HDPE in accordance with GOST 18599-2001 and comply with TU 2248-016-40270293-2002. Pipes are suitable for transporting domestic and drinking water, withstand temperatures from 0°C to 40°C and pressure up to 25 atm.
PVC pipes
UPVC pipes are more dense, durable and rigid than HDPE pipes. Pressure pipes are designed for cold water supply and transportation of warm water at temperatures up to +45°C. Non-pressure pipes are suitable for sewer systems, drainage and drainage. During their operation, a constant temperature of not more than + 60 ° C is permissible. Products can withstand temperatures up to 90°C for a short time.
In our online store you can buy pipes for water supply at a price from the manufacturer. The catalog contains products of various types and diameters, fittings and other components for laying pipelines. You can also purchase plastic pipes for cold water with a diameter of 16 to 315 mm. Larger diameters are available on request. Pipe products are packed in practical transportable coils.
Practically all nomenclature is constantly available in a warehouse of the company. We deliver orders in Moscow and the Moscow region within three days. If you have any questions - call us or leave your contacts in the feedback form. Our specialist will call you back and advise you.
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