Polypropylene pipes are becoming more and more popular, which is primarily due to the emergence of new types of polypropylene, as the material is getting better almost every year. So, polypropylene sewer pipes seem simple and, it would seem, there are no strict requirements here, but this is not so. It is important that these products, from which communications are assembled, meet all quality requirements, otherwise difficulties may be encountered. PP sewer pipes have many positive qualities, but you need to know important nuances- this is what today's article will be about.

Polypropylene sewer pipes are made of PPR 80 copolymer. This material is characterized by chemical resistance to alkaline and acidic solvents. For this reason, such polypropylene pipes are ideal for internal sewerage.

The material is produced if the structure of polypropylene is modernized. Ethylene molecules are added to the initial composition, which improves the final properties. The PPR 80 copolymer, in comparison with other materials, is more durable, resistant to high temperatures and has a long operational life. Described sewer pipes made of polypropylene and are mainly used in household and engineering communications.

Important! PPR 80 copolymer is safe for both environment as well as for human life.

Positive qualities of PP:

• Polypropylene pipes used for sewerage have a long service life. According to the manufacturers themselves, their service life reaches 50 years.
• Sewerage from such polypropylene pipes may not be dyed.
• Sewer PP pipes are not demanding in terms of insulation. This is explained by the fact that they have low thermal conductivity. In short, there will be no heat loss, but with outside condensation will not accumulate.
• Compared with other options, PP products are able to save heat by 20%.
• They are available for trouble-free transportation of liquids, the temperature of which does not exceed +95 degrees Celsius. it best option for domestic pipelines.
• Water pipelines made of polypropylene products have a small mass, so the elements themselves are easier to transport, and communications are easier to assemble. Compared to metal engineering networks, polypropylene sewerage has a mass 8 times less. Thus, the installation of products is more accessible.
• The material does not pass stray currents, so isolation from electricity is not required.
• Since the material is resistant to chemical influences, the diameter of the elements will always remain the same ( throughput).
• There is no bacterial flora, so gravity sewerage remains hygienic.
• Using polypropylene pipes, sewerage is installed 4 times faster than using other material.
• A smooth surface is also beneficial, since deposits will not form from the inside during the operation of the sewer, affecting the permeability of the liquid.
• Chemical reagents and aggressive media are not afraid of PP.
• Due to the excellent sound insulation, you will not hear how water moves over the products.
• PP-elements are not able to change the composition of the liquid passing through them.
• Lower flow resistance as the inside of the product is absolutely smooth.

Polypropylene is one of the most common materials for pipeline assembly today. Its properties are really optimal for most consumer groups. That is why they choose sewer polypropylene pipes.

What raw materials are they made from?

All pipes from the original group are called polypropylene. The composition of raw materials for different samples may vary. For example, mineral or organic matter. This allows you to set specific sets of properties.

The composition of raw materials is an important factor for those who want to choose the best option for polypropylene pipes. Most information can be obtained from labeling. PPR80 is considered the most optimal solution.

Where else are polypropylene products used?

For the installation of internal sewerage, the following positive traits polypropylene pipes are becoming especially relevant.

• Quick installation of the system due to high quality and reliable connections between elements.
• The material weighs very little. Having a similar diameter and length, polypropylene weighs at least a dozen times less than cast iron. This also applies to fittings.
• Thermal resistance. At a working fluid temperature of up to 80-90 degrees, polypropylene retains its original qualities for a long time. Interaction with boiling water should also not be a serious problem, unless of course it is long.
• The ability to resist mechanical loading. During mechanical influence, the material begins to deform, but then quickly returns to its original shape. And there is no serious destruction of the foundation. Fittings are no exception.
• Environmentally friendly (chemically passive material).

Now you can assemble sewers with any configuration, thanks to a wide selection of both the pipes themselves and the fittings for them. Take, for example, the PP 110 mm model - the best option for draining the toilet and building a riser. Polypropylene pipes with a cross section of up to 50 millimeters are more suitable for drains from bathtubs and sinks.

Polypropylene in outdoor networks

Cost price finished products becomes smaller due to the presence of clear parameters in the organization of large-scale production. When it comes to industry economic efficiency always comes out on top.

For example, for the transportation of sewage waste in industrial and public buildings products with a diameter of 50 mm are used. In this case, it is easy to separate the entire system into separate workshops, rooms. These are durable, strong and reliable products. Fittings are no exception.

The role of the central drain in all rooms can be played by pipes with a diameter of up to 110 mm.

How to make the right choice?

Now many companies produce polypropylene sewer pipes. Germany has long been known for its high level quality. They have continued to lead the market for many years. The relatively low price and good quality made Czech sewer pipes popular in our country.

Constructions from Turkey are inferior to previous versions in terms of technical specifications. As well as shaped parts. But they also became quite popular among buyers. And their prices are more attractive.

More about assortment

Extrusion technology is the main method for the production of polypropylene sewer pipes at present. Thanks to this, it becomes possible to create measured segments with certain characteristics. Manufacturers can independently determine the features of the assortment.

1. 2-8 meters - the standard length of the sewer pipe according to GOST. Between adjacent sizes there is a step of one meter. As a result, the length will be 6-12 meters, but in rare cases.
2. Among sewer diameters the most used are 110 mm and 50 mm according to GOST. Shaped parts are selected according to this diameter.

More impressive is the range of so-called pressure sewer pipes. Such products have a diameter in the range from 32 to 1600 millimeters according to GOST. Between sizes in this case step equal to an inch. Their length reaches 12 meters and more according to GOSTs. They are produced in the form of bays, large enough.

The buyer can choose from limited options if he is satisfied standard dimensions. Pressure sewer pipes are suitable for those who have more stringent requirements for products. As well as shaped parts.

About fittings

Sewer fittings are available in two types: for adhesive, or for socket connections. Their range is quite wide, it involves the release of the following types of construction. Shaped parts will also offer a wide range.

• Couplings. They help connect two pipes to each other. The coupling is a piece of pipe with a length of 90-160 mm according to GOST. The sockets are the ends of this product. Its diameter is equal to the diameter of the pipe itself.
• Crosses and tees. These are elements that ensure the insertion of side branches into the central sewer line. Crosses and tees can have the same or different diameters. The insert itself is performed in perpendicular and parallel planes. The ends of these parts have a smooth and socketed shape.
• Branches. Special fixtures, with which you can perform angular fillets between horizontal and vertical lines.

If the deviation angle is 45 or 87 degrees according to GOST, this is an acute-angled bend. There are rectangular varieties with an angle of 90 degrees. The ends are made under the socket, or have a smooth surface.

• Transition pipe. Helps to connect pipelines of 50 and 110 millimeters according to GOST to each other. One branch pipe must be smooth, and the other must be made in the form of a socket.
• Removable chute. It is put on pipes with a diameter of 310 mm or more in accordance with GOST. In domestic pipelines, such parts are not used.

Installation and its features

The speed and ease of installation is the main advantage that polypropylene products have. And it is also worth noting the quality connections between the elements.

The rigidity of these sanitary products is greater than that of conventional polyethylene. What is he doing possible application fittings different kind. In the sewerage system made of polypropylene - all one-piece.

There are only a few nuances that must be considered when carrying out installation.

1. All parts are connected by diffusion method according to GOST. He . It makes it possible to create homogeneous products with absolute strength.
2. Heating, cutting and joining are the three main processes during assembly. The work itself takes a little time.
3. The connection can be put into operation immediately after the three stages announced earlier are completed. The connections are very strong.
4. There are special fittings that allow you to mount a thin branch from the main line.
5. Almost any sewer fitting tool can be used. This applies to both electrical and hand tools. But at the end of the product, in some situations, burrs form. For example, when working with a grinder. They can damage or even break sealing ring from rubber. Therefore, it is necessary to trim the raw edge before installation. Sandpaper with small grains will quite cope with this task. On a cone, the place of cut is cleaned at a distance of about 0.5 cm.

Polypropylene sewer pipes according to GOST are a reliable and simple way out for those who need to install a pipeline. It doesn't matter if it's private or apartment buildings. Such a system, subject to all requirements, can serve for decades or more. Like the polypropylene sewer pipes themselves.

Polypropylene pipes are used to equip not only plumbing and heating, but also sewer systems, which is natural, given the characteristics of the material and strict quality standards.

Related articles:

Polypropylene pipes are excellent operational characteristics, which is due to the characteristics of the material. They are strong, light, not subject to corrosion, do not lose their throughput over time, can be used in different conditions while being easy to install. All this allows the use of polypropylene to create water, heating and, of course, sewer pipes.

Advantages of using polypropylene pipes in external and internal sewerage

Polypropylene can be called a relatively soft material, so its use in outdoor sewerage due to a number of features aimed at strengthening the walls (pipes do not withstand strong soil pressure). Nevertheless, the use of polypropylene even for outdoor networks has its undeniable advantages:

• low thermal conductivity of the material and resistance to temperature extremes, which allows them to be used for arranging wastewater in industry;
• low coefficient of friction of polypropylene, which allows the pipe to pass much more media at a time than similar metal products;
• environmental cleanliness and safety of the material, making it impossible to pollute the liquid, as well as the formation of salt deposits on the inner walls, the occurrence of bacterial sediment;
• ease of installation, which significantly reduces the time of work, since the installation does not require the use of a large or heavy tool;
• polypropylene pipes are manufactured in accordance with standards (including regulated sizes that match similar products made of metal and ceramics), and this allows you to easily repair a pipeline section and replace individual components.

In order for flexible polypropylene pipes to be used in the arrangement of external sewer networks, they are made in a special way. In fact, there are 2 layers of polypropylene in the pipe - inner smooth and outer corrugated. This allows you to withstand the pressure of the soil and evenly distribute the load.

For the installation of internal sewerage and water systems, pipes with smooth walls are used, since there is no need to equalize the pressure. Therefore, polypropylene pipes can be called the undisputed leader, an order of magnitude ahead of competitors. This also applies to polyvinyl chloride pipes (PVC), which occupy an honorable second place, but are inferior to polypropylene in some characteristics.

Why PPR pipes are better

1. They are resistant to mechanical shocks due to the strength and flexibility of the material: polypropylene is able to slightly deform without violating its integrity, and then return to its original state again.
2. The chemical inertness of the raw material allows the pipe to come into contact with caustic, acidic liquids, which would be a significant irritant for other materials. Safety can be added to the same point, including the disposal of polypropylene waste.
3. The heat resistance of PPR is much higher than that of PVC. Constant working t=80-90°C with a short-term increase to t=100°C makes PPR pipes much more universal option than polyvinyl chloride, designed to work at t=40-60°C.
4. The frost resistance of polypropylene pipes varies depending on the additives in the raw materials, while the spread is quite large: t = -10 ... -50 ° C, which is enough for use even in the northern regions.
5. Long service life is the most important indicator, and for polypropylene pipes it is really excellent: such pipes will last up to 50 years, or even longer, according to laboratory tests, the result of which indicates a period of up to 100 years of operation.

It should be noted that only products corresponding to GOST have all the above advantages. Therefore, it is important to choose the right manufacturer that meets all standards from the selection of raw materials and production to packaging and delivery of pipes.

Standards for the manufacture and supply of polypropylene pipes for sewerage

One state standard for polypropylene pipes used for arranging external and internal sewage, no, however, there are separate provisions - for the raw materials from which the pipes are made, the completeness of the pipeline, marking, safety requirements.

Pipes polypropylene GOST must correspond:

• GOST 26996, TU 2211-020-00203521 - raw material from polypropylene copolymer "Balen" 02003, medium pressure PPR 01003;
• GOST 9833 - pipes are equipped with rubber seals;
• GOST 12.3.030 - safe production of pipes and components without disrupting the process.

Given the flammable nature of the raw materials, in the event of an emergency, it is necessary to act in accordance with the safety precautions provided for in accordance with GOST 12.1.044: use foam, inert gases, water from sprayers, isolate access to air.

The size of batches of pipes and fittings is also regulated - no more than 5000 m and a maximum of 1000 pieces, respectively.

Polypropylene sewer pipes GOST: marking

Marking is applied to each pipe by printing or rolling with an interval not exceeding 4 m. For different operating conditions, different types sewer pipes. The marking contains the following information:

• type of raw materials used;
• operating pressure;
• maximum operating temperature;
• diameter.

Pipes marked PPR 80 are considered the best option for use in sewer networks.

Characteristics of profiles of different sizes

For the organization of external sewerage, corrugated polypropylene pipes with a large throughput are used. Their diameter starts from 2000 mm and above, depending on which section of the sewer system they are used in, and whether there is a lot of waste there.

In sewer and drainage systems, polypropylene pipes with diameters from 20 to 1600 mm and even more are used. The presence of pipes standard sizes allows you to build any sewer scheme, replace a section of the old pipeline. The most common pipes with diameters of 50 and 110 mm for non-pressure systems, while for pressure pipes, pipes with more wide choice diameters - from 32 to 2000 mm, and their length reaches 12 m.

Alina Vorobyova, expert

PVC sewer pipes 50 mm

Pipes with an outer diameter of 50 mm are used for wiring sewerage networks, for domestic wastewater (outlets from sinks, bathtubs). They are used in buildings of residential and non-residential stock, administrative, as well as in production.

The international classification of PPR pipes involves the use of polypropylene gray color for the manufacture of sewer pipes with a diameter of 50 mm. Polypropylene products make the drain system much lighter than previously used cast iron products, besides, they are not afraid of chemical attack and high temperatures. They are easy to wash, they do not need any preparation, but are used immediately and guarantee stable operation throughout the entire service life.

The wall thickness of such pipes is 1.8 mm, the length can be very different - from 2.5 m to 30 m.

Polypropylene pipes for sewerage 110 mm

The wall thickness in pipes with a diameter of 110 mm is usually not less than 2 mm (~ 2.2-2.7 mm). They can be used to equip a stock organization in various types buildings. Mostly pipes of just this size are used to organize the descent of drains from the toilet bowl and to equip the riser.

Installation of sewer pipes made of polypropylene

Installation of polypropylene sewerage is simple - you do not need to use many tools and the material itself is very light. After all, even in order to cut the pipe, a special tool is not required - this can be done with a knife. There are several ways to install polypropylene pipes.

Socket connections

The most popular and frequently encountered mounting method. The pipes are connected "butt-to-butt".

Peculiarities:

• the preparatory stage includes the selection of pipes and fittings, sockets by size, and when drawing up a sewerage plan, the length of the pipe that will be inserted into the socket should be taken into account;
• before starting the connection, the outer chamfer is completely removed from the pipes, so that there are no hooks, notches and other irregularities - the surface must be perfectly smooth;
• the pipes must be connected manually, while it is necessary to leave a compensation gap of about 1 cm in reserve;
• when working on a project, it is imperative to take into account the slope, if any.

Installation using welding

For welding semi-propylene pipes, a special heat-welding tool is used. Pipes connected in this way do not require additional stripping. Under the action of temperature, the material melts, and the ends of the pipes are connected to each other, and when solidified, they form a strong monolithic connection. The joint becomes almost invisible.

For a welded joint, additional elements are required - bushings and heating plates for pipes of different sizes.

Coupling with couplings

The coupling type of connection is used to fasten pipes of external sewerage. Corrugated pipes are connected using sliding pipes, and to ensure the tightness of the joints, it is necessary to use rubber seals. Thus, a tight connection is achieved, protected from penetration. external factors inside the sewer system. At the same time, welding machines are not used, installation is quick and simple.

As you can see, polypropylene pipes are widely used in the arrangement of both internal and external sewer systems. Due to the technical characteristics and versatility of the material, they can be buried in the ground, used in internal sewers and embedded in walls. When selecting pipes, you should take into account the quality of raw materials and always pay attention to the labeling of products from the manufacturer: having learned how to do this, you can easily select all the necessary pipes yourself.

INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION

INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION

INTERSTATE

STANDARD

Specifications

(ISO 7671:2003, NEQ)

(EN 1451-1:1998, NEQ)

Official edition

Moscow Standartinform 201 in

Foreword

The goals, basic principles and basic procedure for carrying out work on interstate standardization are established in GOST 1.0-92 “Interstate standardization system. Basic Provisions” and GOST 1.2-2009 “Interstate Standardization System. Interstate standards. rules and recommendations for interstate standardization. Rules for development, adoption. application, renewal and cancellation

About the standard

1 DEVELOPED by LLC "NTC Systems of pipelines made of polymeric materials"

2 INTRODUCED technical committee according to standardization TC 465 "Construction"

4 Order federal agency on technical regulation and metrology dated December 30, 2013 No. 2384-st interstate standard GOST 32414-2013 was put into effect as a national standard Russian Federation from January 1, 2015

5 This standard complies with the international standard ISO 7671:2003 Plastics piping systems for soil and waste discharge (low and high temperature) inside buildings - Polypropylene (PP) Wastewater(low and high temperature) inside buildings - Polypropylene (PP)] and European standard EN 1451-1:1998 Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure - Polypropylene (PP) - Part 1: Specifications for pipes, fittings and the system low and high temperatures) inside buildings - Polypropylene (PP) - Part 1. Specifications pipes, fittings and system).

Degree of conformity - non-equivalent (NEQ)

6 INTRODUCED FOR THE FIRST TIME

Information about changes to this standard is published in the annual information index "National Standards", and the text of changes and amendments - in the monthly information index "National Standards". standards." Relevant information, notification and texts are also placed in information system common use- on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet (www.gost.ru)

© Standardinform. 2016

In the Russian Federation, this standard cannot be fully or partially reproduced. replicated and distributed as official publication without the permission of the Federal Agency for Technical Regulation and Metrology

Figure 11 - Plug

4.5 Symbol

4.5.1 Symbol of pipes includes:

The word "pipe";

Abbreviated material designation: Latin PP-N for polypropylene homopolymer. PP - for polypropylene copolymer (or Cyrillic PP-G for polypropylene homopolymer. PP - for polypropylene copolymer);

Nominal size (nominal outside diameter) and minimum wall thickness;

Symbols of this standard.

4.5.2 The designation of the fitting includes its name, abbreviated designation of the material, nominal size (nominal outer diameter), designation of this standard.

Legend Examples

Pipe with a nominal outer diameter of 110 mm and a minimum wall thickness of 2.7 mm made of polypropylene homopolymer:

Tee 45° reducing nominal outer diameter 160 mm to nominal outer diameter 110 mm from polypropylene homopolymer:

5 Technical requirements

5.1 Characteristics

5.1.1 The outer and inner surface of pipes and fittings shall be even and smooth. Blisters, cavities, cracks and foreign inclusions visible without the use of magnifying devices are not allowed on the surface of pipes and fittings.

5.1.2 Pipes must comply with the characteristics of table 5.

Polypropylene pipes have high performance characteristics, this is ensured by the properties of the feedstock. Resistance to external and internal factors allows you to actively use products not only in the formation heating system or water supply. Installation of sewerage from polypropylene pipes is a promising solution that provides numerous benefits over a long service life.

Advantages of using polypropylene pipes for sewerage

The rapid development of technology allows you to choose the material for construction and repair with a minimum set of shortcomings and weight positive properties. Polypropylene pipes reasonably occupied a wide segment of the market, representing products for arranging water supply, sewerage and heating. What are common virtues polypropylene products:

• The flexibility and strength of the material contributes to stability when mechanical action for a polypropylene product. A blow can provoke a slight deformation, after which the shape of the object will return to its original form.
• The chemical inertness of the feedstock ensures that the pipes come into contact with caustic liquids without subsequent damage.
• Environmental safety of the product, including the process of recycling waste from polypropylene.
• The heat resistance of PPR pipes is significantly higher than that of PVC analogues. At operating temperature up to 90 ° C and a short increase to 100 ° C, the polypropylene construction is more versatile than PVC option operating in the range of 40-60 o C.
• The use of additives in the production of polypropylene pipes contributes to their high frost resistance, reaching a low mark of -50 ° C. These properties allow the material to be used in the northern regions.
• A guaranteed service life of 50 years is a weighty argument for preferring polypropylene. Laboratory research talk about the probability of flawless use in work for 100 years.

Important ! The listed advantages apply exclusively to products that meet GOST. Be careful when choosing a material to the manufacturer's data.

Relative softness polypropylene material provides for a number of features in the operation of pipes for external sewerage. Traditional products will not work here, as the soil will crush the entire structure. For the arrangement of external sewerage, polypropylene pipes are produced using a special technology that ensures uniform distribution of the soil load. The essence of the method is to create a two-layer pipe, the inner part of which is ideally smooth, and the outer part is a corrugated surface, which reduces soil pressure. When installing internal sewage, smooth pipes are used due to the lack of pressure from the outside. Polypropylene pipes for sewerage won leadership among competitors due to the following factors:

• resistance to temperature changes and low thermal conductivity is optimally suited for the arrangement of industrial wastewater;
• the low coefficient of friction of the material contributes to greater throughput than in similar metal products;
• cleanliness and environmental safety guarantees the absence of salt deposits and the formation of bacterial sediment inside.
• ease of installation helps to reduce the period construction work, the material does not need additional use of heavy equipment.
• standard sizes of polypropylene pipes, matching with metal and ceramic counterparts, provide a painless replacement a separate section sewerage.

Thanks to these properties, the palm among products intended for arranging sewerage rightfully belongs to polypropylene pipes.

Product standards and labels

Unified GOST according to polypropylene products, intended for the arrangement of sewers, does not exist. However, regulations have been developed that regulate individual stages of production. According to these documents, for the manufacture of polypropylene pipes:

• raw materials that meet GOST 26996 are used;
• the equipment is made with rubber seals - GOST 9833;
• the technological process is regulated by GOST 12.3.030.

Important ! In the event of a fire hazard when working with the material in accordance with GOST 12.1.044, inert gases, foam and water from sprayers are used. Additionally, access to fresh air should be isolated.

Labeling of polypropylene products allows you to get necessary information about the purpose of the product and its operational capabilities. It reflects:

• what raw materials are pipes made of;
• what working pressure the product can withstand;
• the maximum allowable temperature limit;
• diameter.

It is optimal to use PPR 80 pipes for arranging sewerage.

Product range

The cross-sectional diameter and dimensions depend on the purpose of the product. According to the industry document TU 4926 for sewerage, the following should be produced:

• Length from 2 to 8 m with a step of 1 m between sizes, in some cases the length reaches 12 m.
• For a non-pressure sewerage system, pipes Ø 50, 110 and 150 mm are produced. The first two options are the most common.
• The range of products for pressure systems is wider. The diameter varies between 32-2000 mm, and the step between sizes is one inch. The length of the product sometimes exceeds 12 m.

Therefore, in the absence of the required dimensions among the assortment of a non-pressure system, they turn to the choice of polypropylene pipes for a pressure-type sewerage system. External sewerage is equipped exclusively with corrugated products, the required throughput is provided by a large diameter, it starts from 2000 mm and above. in residential and administrative buildings for internal sewerage wiring, material Ø 50 mm is used. The thickness of their walls is 1.8 mm, the length varies between 2.5-30 m. Sewer risers are equipped with pipes Ø 110 mm, the wall thickness of which exceeds 2 mm.

Types of fittings

When installing a sewerage system, connecting elements are required. All components of this series are divided into fittings for glued connections and fittings for socket connections. The range of fittings includes the following products:

• Removable bell, put on a pipe Ø 310 mm. Applies exclusively to industrial scale, for household sewerage not used.
• Transition pipe, designed for joining pipes with a diameter of 50 and 110 mm. One end of the pipe is a smooth pipe, and the other is a socket.
• Elbows providing angular conjugation of horizontal and vertical lines.
• Tees and crosses are used when inserting side branches into the central sewerage system. They may be the same or different diameters. Insertion is carried out in a perpendicular or parallel plane. The ends of the parts are presented in the form of a socket or have a smooth shape.
• Docking of two polypropylene elements is carried out using couplings. This is a piece of pipe, having a length of 90 to 160 mm, the ends are designed in the form of sockets, and the diameter corresponds to the diameter of the pipe.

In addition to fittings, the sewerage assembly procedure will require the use of two more products - a tee with a plug and an expansion pipe. Their purpose is to facilitate the installation of the system and simplify further maintenance of the polypropylene structure built into the wall.

Mounting options

Installation of sewerage from polypropylene pipes is not difficult. Even when cutting parts, you can get by with a traditional knife without resorting to using special tools. There are three main options for installing sewerage from polypropylene elements:

• socket connections;
• application of welding;
• use of couplings.

The most common is the first option, when the connection occurs by docking using a socket. The second method will require the presence of special thermal welding equipment. Polypropylene parts connected in this way do not need additional stripping. The process consists in the adhesion of the ends of the parts melted under the influence of high temperature. After hardening, they are a high-strength monolithic product, and the joint is practically invisible.

Remark ! The welding method assumes the presence additional elements- bushings and heating plates.

Installation of external sewerage is carried out by the coupling method of connection. Corrugated pipes are joined using sliding parts, tightness is ensured through the use of rubber seals. This method guarantees a tight fixation with full protection against foreign elements entering the sewer from the outside. The absence of welding machines contributes to a quick installation process that takes place without complicated actions.