It was believed that there was no stronger water supply system made of steel and cast iron. This opinion existed before the arrival of such a fragile material as polyethylene on the market. By processing polyethylene granules under low pressure, after continuous screw extrusion, we obtain convenient, practical, and almost no different from metal, and in some respects superior, HDPE pipes for water supply.
For cold water supply, HDPE pipes are marked with a blue stripe
They meet all the requirements for assembly, operational and functionality, sanitary and hygienic requirements for water communications.
Polyethylene has become an alternative to traditional water pipes due to a number of advantages that are due to its manufacturing technology.
| Material/Characteristics | HDPE | Cast iron | Steel |
| Weight per 1m/p, D=160mm, kg | 3,77 | 28,1 | 17,5 |
| Warranty period | ≈ 50 years | ≈ 80 | ≈ 15-25 years |
| Chemical resistance | high | unstable | stable |
| Biological stability | high | low | average |
| Wear resistance level | high | short | average |
| Interaction with UV radiation | is destroyed | doesn't interact | permeable |
| δ, tensile strength, MPa | 20-38 | very small | very small |
Additionally, we can highlight those that make them especially attractive to the consumer:
- anti-corrosion;
- inertness to biological pollution;
- simple and quick assembly;
- low price and cost;
- prostate transportation and light weight;
- working pressure ≈ 10÷25 atm;
- resistance to adverse effects external influences and aggressive environment;
- low thermal conductivity;
- high resistance to hydraulic shocks;
- comply with toxicological, biological, radioactive safety standards;
- do not lose their properties and are not destroyed when water freezes in them and temperature changes.
HDPE water pipes: manufacturer data and properties
They produce HDPE pipes for water with diameters from 16 to 110 mm in coils or coils up to 1000 m long, in straight sections 12 m long with a diameter of 110-1200 mm and are marked with stripes blue color. Manufacturers indicate the following information in the labeling:
- Manufacturer data (name, contact numbers, batch number, production date).
- Brand of PE polyethylene (PE63, PE80, PE100, PE100+).
- Purpose.
- Diameter and wall thickness.
- DSTU.
The choice of HDPE pipes for water supply is influenced by three main technical indicators:
- polyethylene brand indicator;
- diameter;
- SDR is the ratio between diameter and wall thickness, which indicates resistance to internal pressure.
Among all the characteristics of polyethylene pipelines, operating or nominal pressure is distinguished. It shows stable pressure inside the water supply at an ambient temperature of 200°C. According to this criterion, they are divided into medium-pressure, pressure and pipes that operate under vacuum.
Of all three types GOST 18599-2001 has been developed only for water pressure, which is its criterion technical parameters and defines the range of applications:
- for domestic water supply;
- industrial reclamation systems;
- gas supply,
- hot water supply and heating.
Despite their high technical performance, water-pressure polyethylene structures also have disadvantages. These usually include loss of properties upon contact with UV radiation and insufficient elasticity when compressed.
Cold water supply: features and advantages of using HDPE
For drinking water suitable HDPE pipe for cold water supply with a diameter of up to 60 mm and a wall thickness of up to 4.5 mm, grade PE63. The working pressure should not be less than 1 MPa. You can also use other brands of polyethylene if there is a mandatory blue stripe marking, but they usually have a larger diameter, and this is not always convenient for installing home plumbing. In addition to their main technical advantages, their use for drinking water helps prevent the appearance of a metallic taste that accompanies water from metal conduits.
Hot water supply: optimal grades of material
When organizing a hot water supply, it should be taken into account that polyethylene begins to lose its properties at a temperature of +800°C, and melts as the temperature rises. Therefore, the grade of polyethylene parts should be no lower than PE80, and preferably PE100 or PE100+. HDPE pipes for hot water supply have the additional marking PE-RT. For installation of hot water supply, PN20 is suitable - for hot water temperatures up to 110°C, fiberglass reinforced and working pressure 2 MPa, and PN25 - for low-temperature heating systems, foil reinforced with temperature limitation up to 75°C, operating pressure 2.5 MPa.
PE 100 It should be remembered that the pressure of the working medium depends on its temperature and decreases in accordance with the coefficient indicated in the table for the PE100 grade of polyethylene.
Technology for assembling polyethylene water pipes
The assembly of individual polyethylene parts of the water supply system is carried out in two ways:
- detachable allows for easy dismantling of individual parts and is performed using flanges and compression fittings;
- one-piece creates a very durable cast structure and is carried out by butt or electrofusion welding.
The detachable method allows you to simply and quickly, without special equipment, connect individual parts of the water supply system and this is easier to do with the help of compression fittings. Such fittings are easily assembled and disassembled, replaced and make it easy to remake the entire system, and are also used for HDPE-to-metal transitions and for parts of various diameters.
If parts of small diameters are mounted, everything must be done by hand; for large diameter parts, wrenches are used. For different diameters of HDPE water pressure pipes, installation will have some differences:
- for ∅ 20-50 mm, partially disassemble the fitting, prepare the parts to be connected (clean off dirt, remove the external chamfer, mark the depth of entry into the fitting, insert the pipe into the fitting with considerable force, tighten the nut to the end of the thread;
- for ∅ 63-110 mm, a pipe and a compression fitting are prepared (disassembled into an o-ring, a thrust cup, a split fixing ring), pre-assembly without a split ring, and then the final connection (the split ring is put on and moved towards the coupling, the nut is screwed in with a wrench).
Regarding the behavior of a permanent connection, you must follow the installation instructions for HDPE pipes and take into account that they differ for butt welding and electrofusion welding. The most technologically advanced method is butt welding, which requires not only skills, but also a special welding machine. It is precisely this that is most often used for large-diameter HDPE PE100 pressure pipes.
In this case, the ends of the parts to be joined are cleaned and degreased, chamfered at an angle of 45°, heated in a soldering iron to a viscous state and connected strictly perpendicularly under pressure, and allowed to cool. This method is not suitable for parts of different diameters and made of different substances.
More convenient to use are welded couplings or fittings that have an electric heating coil inside. This method does not require special skill, and the stages of work are the same as with the butt method, only the parts to be welded are placed in a fitting, inside which they are fused.
The times when pipes were made exclusively of metal are long gone. Products made from these raw materials have been replaced by products made from new generation materials, acting as worthy alternative metal plumbing systems. Among such products, it is worth highlighting HDPE pipes.
Peculiarities
The demand for polyethylene pipes for water supply is due to the inherent advantages of the material, due to which laying pipelines on the ground or in the ground that supply cold and hot water has become one of the main areas of use of the products, and easy installation pipes allows you to assemble a water supply with your own hands.
The technology for producing polyethylene products requires strict compliance with GOST. The regulatory documentation contains tables containing those used in practice. specifications such products.
Taking into account the regulatory documentation regarding the qualities and characteristics of products, HDPE pipes must meet the following requirements:
- Regardless of the diameter and size, the outer and inner surface of the product must be absolutely smooth: the presence of bubbles, cracks or any other inclusions is not allowed;
- the entire range of products must be resistant to pressure of 20 atm.
Pipes that meet the above indicators are produced with a diameter from 16 to 1600 mm. Sales of goods occur in bays of 100-200 meters or individual products 12 m long. Products are painted black with longitudinal stripes around the circumference. Polyethylene pipes for cold water supply and hot water supply have certain parameters, based on which they are classified according to their scope of application.
Raw materials used to make products. PE 80 pipes are distinguished by high consumer properties, since they are able to withstand high internal pressure on the walls while maintaining structural integrity. Due to the characteristics of the material, they are used in the construction of pipelines with a diameter of no more than 90 mm.
Products for the production of which PE 100 grade polyethylene was used provide good throughput product with a smaller diameter. They are in demand for arranging supply communication circuits cold water. PE 63 is used in residential and industrial construction for foundation drainage, as well as basements in buildings. In most countries, almost 100% of water pipelines consist of polyethylene pipes.
Level of resistance of pipes to internal pressure. This coefficient is calculated based on the ratio of the diameter of the product to the wall thickness. Products with a lower index have higher strength.
Diameter of HDPE pipes. For use in private areas, for example when laying water pipes on summer cottage or in a country residential building, it is recommended to purchase products with a diameter of 25 or 32 mm.
It is worth highlighting the main advantages of HDPE pipes:
- resistance to aggressive environments, including salt, acid and alkali;
- durability - the average service life of products is about 50 years;
- inertness to the liquid medium that passes through communications;
- resistance to the formation and development of microorganisms on the walls;
- resistance to corrosion, which is important when laying a pipeline in soil that differs high humidity, for example, on garden plots and dachas;
- light weight of the product, making installation easier;
- resistance to negative temperatures– polyethylene pipes retain their properties at -70 C, due to which they function effectively not only in summer, but also in winter.
To have a comprehensive understanding of the products, you should highlight some of the disadvantages of the products, which will be discussed below.
- The material has low level resistance to ultraviolet radiation. Based on this, it is recommended to install HDPE pipes in the soil or place them in special protective cases.
- The strength indicators of polyethylene products are inferior to those of metal pipes.
All products in mandatory undergo compliance control state standards established for products used to install water supply systems.
Kinds
The range of such pipes presented on modern market building materials, quite diverse. They are classified according to the area of use, as well as technical characteristics, for example, by diameter, length and other parameters.
The main types of polyethylene pipes used for water supply can be distinguished:
- SDR 9;
- SDR 11;
- SDR 13.6;
- SDR 17;
- SDR 21;
- SDR 26.
The abbreviation is a dimensional characteristic of the product, which represents the ratio of the outer diameter of the pipe to the wall thickness: the thicker the wall of the pipe, the greater the load the material can withstand.
In addition, water supply pipes are divided into the following types:
- PE 100;
- PE 80;
- PE 63;
- PE 32.
However, among them, only the first two varieties are classified as HDPE pipes, since they have a higher density.
In addition, manufacturers provide the following options for HDPE pipes:
- pressure products;
- non-pressure products.
The latter type of pipes is used in the construction of gravity sewers or storm drains. They are also quite effective solution, allowing for the laying of communications. Their main difference is the fact that the products cannot be used when transporting liquid media under pressure.
Pressure structures are in demand when laying water or gas communications, in which the medium moves under a certain pressure.
Based on the cross-section, polyethylene products come in diameters from 10 mm to 1200 mm. The most popular are pipes with a diameter of 20 to 32 mm.
HDPE pipes can be distinguished by a stripe applied to the base. Line of blue color will indicate that the product is intended for transporting cold water, and a yellow stripe means the product is allowed for use in the gas pipeline system.
Scope of application
Thanks to the large list of positive features, such products have a wide range of applications in completely different sectors of life. \
Below are the main areas of application of the products.
- In the first place is the use of HDPE pipes in the sewer system, especially for domestic purposes. Almost all sewer system private use includes technical pipes made of low pressure polyethylene. It is worth noting that such pipes are used for external and internal installation.
- The products performed excellently, acting as a shell for connecting electrical, television and power cables. They perform protective function for communication channels and electrical wiring, since they reliably cover communications from mechanical damage.
- HDPE pipes are extremely popular when arranging greenhouses in agriculture of various scales. In this area, products are used for laying systems for watering crops, moistening the soil, and also feeding plants with carbon dioxide.
- When creating temporary or permanent ice fields, low-density polyethylene pipes play a special role.
- The products act as formative elements in the monolithic structure of various types of buildings.
- Pipes with a large diameter are necessary for the arrangement drainage system and pressure water pipelines.
Thanks to high stability to corrosion, they can be successfully used in many other areas. Resistance to electrochemical corrosion is important feature products - such pipes are used when arranging modern systems communications.
Installation
In order to increase the efficiency of installation work of polyethylene pipes, it is worth exploring options for connecting two products to each other.
The following methods are distinguished:
- welding;
- compression fittings;
- electrofusion welding;
- flange connection.
The first method is used in practice most often, since it has a high degree of reliability and forms a tight and durable seam between the structural elements of the water supply system. The welding technology is as follows: the ends of the products are subjected to heat treatment using a welding machine, after which they are fastened to each other - thanks to this, a connection is formed. This method is especially relevant when constructing an underground pipeline.
Fittings are the second most popular way of fixing products to each other. Today there are various compression parts on sale - tees, couplings, transition and corner fittings. Such diversity makes it possible to make the transition to threading. By using such elements, it is possible to lay a water supply system of any configuration. However, it is not recommended to connect communications that will be located underground with such fasteners, since the fittings require regular maintenance.
Electrofusion welding is performed using a special type of fittings - couplings. They contain heating elements and terminals. The latter are needed for connection to heating equipment.
The process of connecting products occurs as follows: fittings are inserted into the pipes at both ends, after which a heating device is connected, due to which the spiral element melts the coupling and the base of the pipe. As a result, a strong permanent seam is formed at this place.
Flange mounting is used when switching to threading. This connection option is not widely used, however, when installing water pipes from HDPE pipes for cold water supply, flanges are very popular.
Light weight and quite simple technique, which allows you to connect products into one integral structure, make it possible to significantly reduce the time for installation work, as well as perform them yourself without large financial costs and the use of specialized equipment.
In favor easy installation HDPE pipes are also indicated by a wide range of connecting elements that are used in conjunction with pipes. They make it possible to lay systems of any configuration, and also allow you to connect elements to each other quickly and as reliably as possible. Experts highlight a number of recommendations general, which will help you install pipes made of low-density polyethylene without the risk of making a mistake.
Several basic rules should be highlighted.
- All installation work should start with creating detailed diagram location of the future water supply system. The drawn up drawings will help you make the most accurate calculations of the number of pipes and connecting elements that will be needed for the main line.
- In the process of independently transporting purchased products, it is necessary to take precautions to avoid situations in which the products may be damaged by sharp objects or cutting tools.
- If you plan to lay HDPE pipes in the soil, you must first carry out preparatory activities associated with the arrangement of a sand cushion in the trench, the layer of which should not be less than 10 cm. As an alternative to sand, gravel can be used as a raw material for a cushion under pipes. This additional layer is needed to protect the product from the risk of damage to the walls from sharp edges. various items that may end up in the ground. Before laying pipes protective layer must be compacted thoroughly.
- Products through which cold water will be transported must be laid in such a way that the joints of the water supply elements are slightly recessed into the bulk cushion.
- Laying products involves several options for connecting elements to each other: permanent fixation and detachable fastening. The first option requires the presence of welding equipment. In some cases, the method of butt soldering pipes using electric couplings is used. This method is effective in the case of arranging pressure water supply systems when using products with a large cross-section.
In the second case, the work is carried out using flange or socket fittings, which contain an elastic seal. This option is acceptable for communications in which the movement of the liquid medium inside occurs without the participation of pressure (for pipes with a diameter of up to 35 mm). To connect pipes using the detachable method, there is no need to use specialized equipment or tools.
The TeraPlast company offers its customers and partners quality products own production- HDPE pipes for water supply. These pipes can be used for laying cold and hot water supply in private residential and apartment buildings, for organizing pipelines for swimming pools and fountains, for draining underground, waste, groundwater. HDPE pipes for water supply systems produced by TeraPlast have the following advantages:
- The quality of products undergoes strict control at the manufacturer; pipes of any cross-section must withstand high pressure.
- Production is carried out on modern technological equipment from PE100 raw materials, which is characterized by high performance properties.
- The catalog includes a range of products, the diameter of which varies from 20 to 1600 millimeters.
- All products are manufactured in accordance with GOST requirements. HDPE pipes for water supply are sold with all the necessary official documents.
HDPE water pipe from TeraPLAST is the best choice!
All products presented in the catalog are made using quality material HDPE - low-density polyethylene. That is why each of our HDPE water pipes, the price of which varies from 18 rubles to 60 thousand rubles (price per meter), is characterized by the following functional features and operational advantages:
- resistance to various solvents, acids, alkalis, organic compounds - under their influence the material does not crack or swell;
- amazing durability - HDPE water pipe can last up to 100 years;
- thoughtful design and increased strength;
- ease of installation - they are mounted using fittings;
- environmentally friendly - products comply with accepted standards and hygiene standards, they are safe for humans and nature;
- low coefficient of thermal conductivity - the products retain heat well and minimize its losses, which is why they are used for laying pipelines for hot water supply systems.
Due to its ability to stretch and compress, the HDPE pipe for water supply is ideal for installation in areas where minor subsidence or soil movement is observed. In this case, installation is carried out for a short time, thanks to the low weight of the pipes, as well as the simple and convenient system fittings.
You can buy high-quality and durable HDPE water pipes in Moscow at TeraPlast. Our company is confidently developing in the domestic market, therefore it offers to order only environmentally friendly and reliable products for laying pipelines.
HDPE pipe for water supply price
All presented products fully meet the declared characteristics, because undergoes strict control in production. The price of HDPE pipe for water supply is quite reasonable for most buyers. Our HDPE water pipes (Moscow and Moscow region) will allow you to create a pipeline of any complexity. We sell products according to best prices. Our warehouses always store large volumes of products.
For buyers, we have compiled a price list that indicates the main characteristics of the goods and their cost. The ordered products will be quickly delivered to any facility located in the Moscow region. TeraPlast also delivers throughout Russia and the CIS countries!
- Economical. When constructing water supply networks using HDPE pipes, savings of up to 40% -45% are created when compared with traditional methods;
- Durability. The service life of HDPE pipes is 50 years;
- Unpretentiousness. Easy to maintain. The pipes do not require cathodic protection and, as a result, require almost no maintenance;
- Its technology. Corrosion resistance and chemical influences. Polyethylene pipes not associated with aggressive environments;
- Impact resistance and elasticity. Reduced possibility of destruction polyethylene pipeline when the liquid freezes, since the HDPE pipe does not collapse, but expands in diameter, regaining its previous size when the liquid thaws;
- Light weight, which significantly facilitates and reduces the cost of installation work;
- Reliability. Welds retain their strength throughout the entire service life of pipelines made of polyethylene pipes;
- Safety of polyethylene pipes;
- Environmental friendliness. Inner layer This HDPE pipe does not add any harmful impurities to the water.
Pipes can be used for cold indoor supply, construction of irrigation and low-pressure water supply systems.
Transportation of HDPE pipes
Ease of transportation of PE pipes due to the fairly light specific gravity. No loading and unloading equipment required. Possibility of telescoping pipes.
HDPE pipe installation
The connection of HDPE pipes occurs thanks to electrofusion, butt welding, as well as using compression fittings.
Service life - 50 years.
Main technical characteristics
- SDR index - 11, 13.6, 17, 17.6, 21 and 26;
- material - low-density polyethylene (HDPE);
- grades of polyethylene - , and ;
- execution - bell-shaped or bell-free.
Detailed technical specifications are in each product card. There you can see the diameter (nominal, outer and inner), weight linear meter, wall thickness, etc.
HDPE polyethylene pipes for cold water supply are connected using fittings. Electrofusion and butt welding is acceptable.
Currently, during the construction or repair of external water supply and gas supply networks of private houses and cottages, plastic or polyethylene pipes - HDPE - are used.
HDPE pipes have a number of advantages, low cost and long service life.
HDPE pipe photo, supplied in one piece of 100 meters
Low pressure polyethylene for pipe production
Polyethylene is produced by the polymerization of ethylene, a well-known organic compound and a common raw material for the chemical industry. HDPE pipes are manufactured by continuous extrusion of molten raw materials.
Explanation of the name of HDPE pipes made of polyethylene
PE pipes stand for “polyethylene pipes”.
The abbreviation HDPE stands for “low-density polyethylene”. This is the name of the material from which the pipe is made.
There are two main technological processes obtaining polyethylene:
- High-density polyethylene (LDPE, LDPE) is produced by high blood pressure(150-300 MPa) and temperature (200-260°C), and the result is low-density polyethylene - LDPE or LPDE (LowDensityPolyethylene). This polyethylene is used for packaging. It is soft, plastic, stretches easily and is absolutely unsuitable for making pipes.
- Low pressure polyethylene (HDPE, HDPE) is produced at low pressure (0.1-2 MPa) and temperature (120-150°C), and the resulting output is polyethylene high density HDPE or HDPE (High Density Polyethylene). Such polyethylene has a high density and strength and is suitable for the production of HDPE pipes.
Thus, the abbreviation HDPE in the name of the pipes means the features of the manufacturing technology and the characteristics of the raw materials.
HDPE pipes for water supply
The international name HDPE indicates high density polyethylene.
HDPE has a number of beneficial properties, which allow the production of pipes from it.
Specifications
HDPE polyethylene pipes must be produced in Russia in accordance with the quality standards prescribed in GOST 18599-2001.
The purpose of HDPE pipes for water supply is the laying of pipelines and water and gas supply systems.
They can be used for sewerage systems, as well as protective boxes, cable ducts, for drainage, etc.
Polyethylene has high strength and a long service life, in addition it environmentally friendly material, which does not release toxic substances into the external environment.
Technical characteristics and properties of HDPE pipes:
| Characteristics | Indicators |
|---|---|
| Usage | Pressure pipes for cold water supply pipelines, protection electric cable, non-pressure sewer pipelines |
| Material of manufacture | Low-pressure polyethylene |
| Appearance of products | Black (to prevent exposure sun rays), with blue (water) or yellow (gas) longitudinal stripes |
| Lifetime | 50 years |
| Material flexibility | High flexibility and ductility |
| Operating temperatures | -20°C to +40°C |
| Maximum temperatures | -70°C to +80°C |
| Diameter sizes | Large selection of diameters from 10 mm to 1200 mm |
| Operating pressure | 6-16 atmospheres |
| Inner surface | The smooth surface increases the throughput of the pipe, prevents clogging and silt formation |
| External surface | Single layer, smooth |
| Resistance to chemical and physical influences | Does not conduct electric current; Doesn't join chemical reactions with active substances; Resistant to acids and alkalis; Not subject to corrosion; |
| Tensile strength | 38 MPa |
| Types and modifications | PE 63, PE 80, PE100 |
| Possible cuts | 6-12 meters |
| Connection type | Butt welding; Compression couplings; Socket welding; |
Prices for HDPE pipes for water supply and gas pipelines
HDPE pipes have a favorable ratio of characteristics, long service life and price.
Thanks to this combination, they are widely used for laying pipelines for gas supply systems, sewerage systems, as pipes for household and drinking water supply, for internal wiring and underground cable laying, etc.
Types and cost
Polyethylene pipes HDPE 100 (sdr 11, 13.6, 17, 17.6, 21 and 26) are pipes based on the PE 80 series. This modification has improved characteristics, they can withstand high operating pressure, have a maximum tensile strength (1000 hours at internal tension, this means that the pipe will not crack if the water inside freezes) and has good resistance to mechanical damage;
Polyethylene pipes HDPE 80 are lightweight and reliable products that do not require additional protection. They have a long service life.
The price for PE 80 polyethylene pipes (for gas pipelines) is usually lower than for PE 100 pipes, since medium pressure polyethylene is used in production.
Prices for HDPE PE 80 pipes, average in rubles per 1 linear meter.
| Outer diameter | PE 80, SDR26, PN 5.0; wall thickness 6.2-45.9 mm | PE80, SDR21, PN 6.3; wall thickness 4.3-47.7 mm | PE80, SDR17.6, PN 7.5; wall thickness 2-35.7 mm | PE80, SDR11, PN 12.5; wall thickness 2-28.6 mm |
|---|---|---|---|---|
| 10 mm | 7 rub., wall 2 mm | |||
| 16 mm | 12 rub., wall 2 mm | |||
| 20 mm | 14 rub., wall 2 mm | |||
| 25 mm | 21 rub., wall 2.3 mm | |||
| 32 mm | 23 rub., wall 2 mm | 34 rub., wall 3 mm | ||
| 40 mm | 34 rub., wall 2.3 mm | 42 RUR, wall 3.7 mm | ||
| 50 mm | 52 rub., wall 2.9 mm | 65 rub., wall 4.6 mm | ||
| 63 mm | 82 rub., wall 3.6 mm | 103 RUR, wall 5.8 mm | ||
| 75 mm | 127 rub., wall 4.3 mm | 150 rub., wall 6.8 mm | ||
| 90 mm | 168 rub., wall 4.3 mm | 172 rub., wall 5.1 mm | 156 rub., wall 8.2 mm | |
| 110 mm | 151 rub., wall 5.3 mm | 176 rub., wall 6.3 mm | 168 rub., wall 10 mm | |
| 125 mm | 196 RUR, wall 6.0 mm | 231 rub., wall 7.1 mm | 354 rub., wall 11.4 mm | |
| 140 mm | 247 rub., wall 6.7 mm | 290 rub., wall 8 mm | 441 rub., wall 12.7 mm | |
| 160 mm | 260 rub., wall 6.2 mm | 315 rub., wall 7.7 mm | 370 rub., wall 9.1 mm | 567 RUR, wall 14.6 mm |
| 180 mm | RUB 329, wall 6.9 mm | 405 rub., wall 8.6 mm | 474 rub., wall 10.2 mm | RUB 731, wall 16.4 mm |
| 200 mm | 407 rub., wall 7.7 mm | 500 rub., wall 9.6 mm | 588 rub., wall 11.4 mm | 902 rub., wall 18.2 mm |
| 225 mm | 500 rub., wall 8.6 mm | 620 rub., wall 10.8 mm | 727 rub., wall 12.8 mm | RUB 1,121, wall 20.5 mm |
| 250 mm | 632 RUR, wall 9.6 mm | 773 rub., wall 11.9 mm | 918 rub., wall 14.2 mm | RUB 1,403, wall 22.7 mm |
| 280 mm | 789 rub., wall 11.7 mm | 980 rub., wall 13.4 mm | RUB 1,143, wall 15.9 mm | RUB 1,758, wall 25.4 mm |
| 315 mm | 985 rub., wall 12.1 mm | 1206 rub., wall 15 mm | RUB 1,418, wall 17.9 mm | RUB 2,181, wall 28.6 mm |
| 355 mm | RUB 1,217, wall 13.6 mm | RUB 1,543, wall 16.9 mm | 1818 rub., wall 20.1 mm | |
| 400 mm | RUB 1,580, wall 15.3 mm | 1943 RUR, wall 19.1 mm | RUB 2,284, wall 22.7 mm | |
| 450 mm | 2015 rub., wall 17.2 mm | RUB 2,486, wall 21.5 mm | 2915 RUR, wall 25.5 mm | |
| 500 mm | RUB 2,462, wall 19.1 mm | RUB 3,038, wall 23.9 mm | RUB 3,565, wall 28.3 mm | |
| 560 mm | RUB 3,110, wall 21.4 mm | RUB 3,839, wall 26.7 mm | RUB 4,508, wall 31.7 mm | |
| 630 mm | RUB 3,905, wall 24.1 mm | RUR 4,795, wall 30 mm | 5650 rub., wall 35.7 mm | |
| 710 mm | RUB 4,963, wall 27.2 mm | 6118 RUR, wall 33.9 mm | ||
| 800 mm | RUB 6,288, wall 30.6 mm | RUB 7,755, wall 38.1 mm | ||
| 900 mm | RUB 8,117, wall 34.4 mm | RUB 10,040, wall 42.9 mm | ||
| 1000 mm | RUB 10,040, wall 38.2 mm | RUB 12,380, wall 47.7 mm | ||
| 1200 mm | RUB 14,500, wall 45.9 mm |
Prices for HDPE PE 100 pipes for water supply, average in rubles per 1 linear meter.
| Outer diameter | PE100, SDR26, PN 6.3 | PE100, SDR21, PN 8.0 | PE100, SDR17, PN 10.0 | PE100, SDR13.6, PN 12.5 | PE100, SDR11, PN 16.0 |
|---|---|---|---|---|---|
| 63 mm | 67 rub., wall 3.8 mm | 81 rub., wall 4.7 mm | 100 rub., wall 5.8 mm | ||
| 75 mm | 97 rub., wall 4.5 mm | 118 rub., wall 5.6 mm | 140 rub., wall 6.8 mm | ||
| 90 mm | 111 rub., wall 4.3 mm | 136 rub., wall 5.4 mm | 165 rub., wall 6.7 mm | 202 RUR, wall 8.2 mm | |
| 110 mm | 133 rub., wall 4.2 mm | 166 rub., wall 5.3 mm | 202 rub., wall 6.6 mm | 245 rub., wall 8.1 mm | 293 rub., wall 10 mm |
| 125 mm | 175 rub., wall 4.8 mm | 215 rub., wall 6 mm | 263 rub., wall 7.4 mm | 320 rub., wall 9.2 mm | 390 rub., wall 11.4 mm |
| 140 mm | 220 rub., wall 5.4 mm | 267 RUR, wall 6.7 mm | RUR 329, wall 8.3 mm | 402 RUR, wall 10.3 mm | 485 rub., wall 12.7 mm |
| 160 mm | 283 RUR, wall 6.2 mm | RUR 347, wall 7.7 mm | 421 rub., wall 9.5 mm | 513 rub., wall 11.8 mm | 622 RUR, wall 14.6 mm |
| 180 mm | 360 rub., wall 6.9 mm | RUB 444, wall 8.6 mm | 543 RUR, wall 10.7 mm | 663 RUR, wall 13.3 mm | 800 rub., wall 16.4 mm |
| 200 mm | 445 rub., wall 7.7 mm | 549 rub., wall 9.6 mm | 670 rub., wall 11.9 mm | RUR 814, wall 14.7 mm | 990 rub., wall 18.2 mm |
| 225 mm | 548 rub., wall 8.6 mm | 680 rub., wall 10.8 mm | RUR 834, wall 13.4 mm | 1016 RUR, wall 16.6 mm | 1229 RUR, wall 20.5 mm |
| 250 mm | 694 rub., wall 9.6 mm | 848 rub., wall 11.9 mm | 1046 RUR, wall 14.8 mm | RUB 1,273, wall 18.4 mm | RUB 1,539, wall 22.7 mm |
| 280 mm | 864 rub., wall 10.7 mm | RUB 1,074, wall 13.4 mm | RUB 1,311, wall 16.6 mm | RUB 1,596, wall 20.6 mm | 1928 RUR, wall 25.4 mm |
| 315 mm | RUB 1,081, wall 12.1 mm | 1322 rub., wall 15 mm | 1620 rub., wall 18.7 mm | 1983 RUR, wall 23.2 mm | RUB 2,392, wall 28.6 mm |
| 355 mm | RUB 1,374, wall 13.6 mm | RUB 1,694, wall 16.9 mm | RUB 2,089, wall 21.1 mm | RUB 2,539, wall 26.1 mm | RUB 3,065, wall 32.2 mm |
| 400 mm | RUB 1,734, wall 15.3 mm | RUB 2,133, wall 19.2 mm | RUB 2,607, wall 23.7 mm | RUB 3,184, wall 29.4 mm | RUB 3,854, wall 36.3 mm |
| 450 mm | 2210 rub., wall 17.2 mm | RUB 2,727, wall 21.5 mm | RUB 3,338, wall 26.7 mm | RUB 4,072, wall 33.1 mm | RUB 4,927, wall 40.9 mm |
| 500 mm | 2700 rub., wall 19.1 mm | RUB 3,334, wall 23.9 mm | RUB 4,087, wall 29.7 mm | 4980 rub., wall 36.8 mm | RUB 6,023, wall 45.4 mm |
| 560 mm | RUB 3,414, wall 21.4 mm | 4212 RUR, wall 26.7 mm | RUB 5,171, wall 33.2 mm | RUB 6,308, wall 41.2 mm | 7615 rub., wall 50.8 mm |
| 630 mm | RUB 4,282, wall 24.1 mm | 5260 rub., wall 30 mm | RUB 6,479, wall 37.4 mm | RUB 7,894, wall 46.3 mm | RUB 9,778, wall 57.2 mm |
| 710 mm | RUB 5,446, wall 27.2 mm | RUB 6,712, wall 33.9 mm | RUB 8,229, wall 42.1 mm | RUB 10,254, wall 52.2 mm | RUB 12,437, wall 64.5 mm |
| 800 mm | RUB 6,898, wall 30.6 mm | RUB 8,508, wall 38.1 mm | RUB 10,426, wall 47.4 mm | RUB 13,007, wall 58.8 mm | RUB 16,046, wall 72.6 mm |
| 900 mm | RUB 8,906, wall 34.4 mm | RUB 11,013, wall 42.9 mm | RUB 13,482, wall 53.3 mm | RUB 16,425, wall 66.1 mm | RUB 19,938, wall 81.7 mm |
| 1000 mm | 1112 RUR, wall 38.2 mm | RUB 13,577, wall 47.7 mm | RUB 16,615, wall 59.3 mm | RUB 20,317, wall 73.5 mm | RUB 24,590, wall 90.8 mm |
| 1200 mm | RUB 15,855, wall 45.9 mm | RUB 19,558, wall 57.2 mm | RUB 23,925, wall 71.1 mm | RUB 29,241, wall 88.2 mm |
Dimensions, diameters and markings
HDPE pipes are produced with outer diameter (Dn) from 10 to 1200 mm, wall thickness (S) from 5 to 53.3 mm.
There is one more in the pipe markings important indicator– SDR, which is calculated as the ratio of the outer diameter to the wall thickness.
How less value SDR, the higher the operating pressure the pipe can withstand.
For example: with SDR9 the operating pressure is 20 atmospheres, with SDR9 - 16 atm, with SDR13.6 - 12.5 atm, with SDR17 - 10 atm, and so on.
Manufacturers guarantee that when transporting water at operating pressure and temperature of 20°C, the service life of the pipe is at least 50 years.
Marking and description of characteristics on the HDPE pipe
HDPE pipes for water supply are produced in accordance with international standardsblack color with applied longitudinalblue stripe. Band yellow color applied for marking HDPE pipes for gas supply.
Markings indicating the diameter, operating pressure, and temperature must be applied to the side wall of the pipe. Information about the manufacturer is also indicated.
If the product does not have the appropriate marking, this is a violation and calls into question the quality.
Advantages and applications of polyethylene pipes
Currently, the industry produces HDPE pipes for various purposes, diameters.
In this particular case, we are interested in HDPE pipes for water supply.
The blue stripe indicates that the pipe is intended for cold water supply networks
Advantages of HDPE pipes compared to analogues:
- Polyethylene pipes are not destroyed by water and are not subject to corrosion;
- Polyethylene is not afraid of acids and alkalis;
- Polyethylene pipes are protected from UV, since special components are added to the raw materials during production;
- Small price.
- Simplicity of installation work.
- When the water inside freezes, they are not destroyed.
- Long service life.
- When laid in the ground, they are not afraid of ground movements and earthquakes.
PE pipe connections
HDPE pipes can be connected in several ways:
- Welding HDPE pipes. One of the most reliable connections. For this, there are special welding machines that heat the ends of equally cut pipes to the required temperature, and then connect the pipes. Formed reliable connection, pipelines with this type of connection can be laid in the ground.
- Connection using compression fittings for HDPE pipes. Various types of fittings of different diameters are commercially produced for different diameters of HDPE pipes: couplings, tees, elbows, thread adapters, flanges and others. In a short time, using HDPE pipes, you can assemble a water supply system of any configuration and for any needs. This type connections are serviceable, so laying them in the ground is not recommended.
- Connection by electrodiffusion welding using thermoresistive fittings. This connection is also called electrofusion welding. There are special fittings various types and diameters, which in their structure have special heating spirals and sensors, and on the surface - terminals for connecting a welding machine. The prepared pipe ends are inserted into the fitting and connected welding machine. Data about the welding mode is printed on the fitting using a bar code that is read by the machine. When the welding mode starts, the built-in spiral heats up and the material of the fitting and pipe melts. The result is a strong connection that can be laid in open ground.
- Flange connections. They are used mainly for transition connections with other types of pipes.
Laying in the ground
When laying HDPE polyethylene pipes in open ground (into the ground), it is taken into account that the depth of the trench should be below the freezing level of the soil.
It is different in each region. For example, in Moscow it is 1.4 meters, and in Volgograd 1.2 meters.
The width of the trench may be the minimum required to accommodate the pipe.
It is optimal to lay a single section of pipe into the ground that does not contain joints.
If there are connections, they must be made in a technologically acceptable manner (see above).
Conclusion:
- HDPE pipes are best option pipeline for water supply installation;
- Low cost of pipes with long term operation;
- Easy transportation, installation and installation due to flexibility and low weight;
- Marking required
- HDPE pipes for water supply are marked with a blue stripe;
- It is not recommended to use compression fittings in underground pipe installations.