Systems household use for the supply of water, heat and sewage disposal, in most cases they are mounted on the basis of plastic pipes. Polypropylene pipes are considered the most common and universal. For correct installation pipeline and its operation, you need to know what diameter plastic pipes are and what they are intended for.

Purpose and characteristics of plastic pipes

To designate polypropylene pipe products in the international format, two letters are used - PP. This material is produced by the chemical industry; thermoplastic polymers are used to make it.

The specified pipe products are produced according to a certain standard, which regulates the sizes of plastic pipes and their characteristics.

As an example, here are some data and their corresponding standards:

• The density of the material according to GOST 15139 is 0.9 g/cm 3 .
• The melting point, determined by GOST 21553, reaches 149 0 C.
• The elongation of the material upon reaching the yield strength in accordance with GOST 11262 is about 50%.
• Tensile strength is regulated by GOST 11262, and can have a value of 34-35 N/mm 2.
• The linear expansion coefficient according to GOST 15173 is 0.15 mm/m 0 C.

Pipe diameter

The most important characteristic is the diameter of plastic pipes. The following types of this parameter are distinguished:

• Outer diameter section.
• Internal diametrical section.

Internal and external section of polypropylene pipe

Communication systems for water supply, heating and internal sewerage are laid using small-diameter plastic pipes. In this case, the minimum value can be 16 mm, and the maximum - 50 mm.

Pipe products with large diameters are used when laying pipelines supplying drinking water and diverting sewage in the housing and communal services sector.

Types of polypropylene pipes depending on the scope of use

Polypropylene pipes are produced in only three names: PN10, PN20, PN25. However, they are enough for complete replacement technologically outdated metal analogues.

Despite the thinness of the PN10 pipe, its service life is about half a century. The main application is cold water supply and heating systems, including underfloor heating systems (read: " "). Small-diameter PVC pipes can also be used in the construction of storm and sewerage systems. The external diameter ranges from 20 to 110 millimeters, the internal diameter ranges from 16 to 90 millimeters.

A pipe marked PN20 can function flawlessly for 25 years. Due to the greater wall thickness, about 18.4 mm, the product can have external parameters similar to PN10, but at the same time have a smaller inner diameter. This makes it possible to use these tubular products in systems with internal operating pressure up to 2 MPa. PN20 pipes are quite suitable for installing full-fledged heating systems. This became possible due to the resistance of the products to high temperatures, up to 90 0 C. For comparison, we can say that a PN10 pipe can function normally at a temperature of no more than 45 0 C.

In the manufacture of PN25 pipes, additional reinforcement of the products with aluminum film or fiberglass is used. The operating period largely depends on the pressure and temperature of the working environment.

The following indicators are considered the main characteristics of pipe products of this type:

• Carrier pressure no more than 2.5 MPa.
• The outer diameter ranges from 21 to 80 millimeters.
• The internal cross-section ranges from 13 to 50 millimeters.
• Wall thickness can vary from 4 to 13.4 millimeters.

The price of a plastic pipe is determined by the listed characteristics.

Pros and cons of polyethylene pipes

WITH positive side New generation pipes are characterized by the following properties:

• Compliance with environmental regulations.
• Long service life, about half a century.
• Resistance to freezing of the working environment and its further thawing. This property is explained by the ability polypropylene pipes expand and return to its original shape without deforming the shell.
• Fast and convenient assembly communication system.
• Resistance to aggressive chemicals.
• Resistance to the occurrence of corrosive processes, as well as to the formation of blockages (subject to the pipe laying rules).
• Low price.

A disadvantage of pipes is a negative attitude towards sudden temperature changes. In addition, such products are not recommended for use in premises with a high degree of fire hazard.

The diameter or cross-section of a plastic pipe for laying water supply, heating and sewerage systems has great importance. This parameter indicates the pipeline capacity that provides the most efficient operation.

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IN last decade plastic pipes for sewerage began to be used everywhere. The reason for their popularity is the presence of the advantages of these products with a small number of disadvantages.

Advantages of plastic sewer pipes

Among the advantages of plastic products it should be noted:

• light weight - for this reason, creating a sewer system using such pipes is simple, since if necessary they can be easily moved and transported to long distances. Even a 2 meter long pipe can be installed by one person; he obviously cannot handle a cast iron product;
• ease of installation - plastic can be cut without problems and easily connected;
• durability – plastic products for sewerage are resistant to aggressive environments, corrosion, high humidity, so they can last for a long time. Manufacturers of these products usually provide a 50-year warranty. As practice has shown, the service life of sewer plastic pipes is much longer;
• resistance to blockages - the fact is that their inner surface has almost no roughness, so dirt is deposited on it slowly. As a result, blockages rarely occur. After installation is completed, cleaning will not be required soon;
• immunity to temperature changes - commercially available plastic pipes for outdoor sewers that can withstand frosty weather well.

Flaws sewer pipes made of plastic:

• noisy operation – sewer system made of plastic products It is noisy during operation. This one is especially obvious negative point manifests itself in apartment buildings, where wastewater outlets from several apartments are connected to one riser;
• intolerance to high temperatures – worker temperature regime of these products is from 40 to 90 degrees. When the temperature of the wastewater exceeds these parameters, most types of plastic pipes soften. This disadvantage is not considered significant since the temperature of the wastewater is not that high.

Types of plastic for sewer pipes

Types of plastic sewer pipes differ in the material used.

Polyethylene has the following features:

• resistance to active chemicals;
• immunity to low temperatures (if they drop, polyethylene does not lose its physical properties, while the presence of an ice plug will only stretch the product, and after the ice melts, the pipe returns to its original size);
• the presence of a slippery surface - nothing sticks to it;
• this material softens when low temperatures(at +80 degrees even the most durable products become soft);
• working pressure equal to 2.5 - 16 atmospheres.

Polyvinyl chloride is considered the most popular plastic used for the construction of sewage systems, since PVC is characterized by:

• resistance to alkaline environments, most acids and mineral oils;
• depending on the brand of product with a density from 1.35 to 1.43 g/cm³;
• low flammability (polyvinyl chloride begins to decompose at temperatures above 120 degrees, releasing hydrogen chloride);
• poor conductivity of electricity;
• rigidity and elasticity, but a blow can damage PVC;
• deformation at temperatures above +70 degrees;
• working pressure 6 – 46 atmospheres.

Polypropylene is usually used to create water pressure systems.

But there are also sewer pipes on sale made from this material, which differs:

• low weight - it is lighter than other types of plastics;
• density equal to 0.91 g/cm³;
• abrasion resistance (polypropylene pipes can withstand wastewater containing abrasive fractions);
• softening temperature, which is 140 degrees above zero, melting point - 180 degrees;
• susceptibility to prolonged exposure to highly concentrated acids;
• the ability to collapse at temperatures less than 5 degrees below zero, so an ice plug will destroy the system;
• working pressure about 20 atmospheres;
• welding connection method.

Metal-polymer products (PEX pipes). These products are characterized by strength and durability. This material is three-layer: polyethylene - aluminum - polyethylene. The presence of a metal layer increases the strength of the pipes.

This material has the following features:

• operating temperature is from +40 to +95 degrees;
• it just cuts and bends;
• has high heat-reflecting and anti-corrosion parameters;
• the diameter of plastic sewer pipes of this type is 16-63 millimeters and therefore they are usually used when installing an internal sewer system.

Selection of plastic pipes for sewerage

Since the sewer system can be internal and external, when sewer pipes are made, different plastics are used for them.
The choice depends on the requirements for wastewater disposal.

Outdoor option sewer network characterized by the following indicators:

• high strength, since soil pressure will be exerted on the structure;
• its capacity must ensure timely disposal of wastewater;
• resistance to corrosion and temperature changes;
• reliability of connection of individual elements.

To the pipes for internal sewerage other requirements are imposed, since the network places more gentle loads on the pipeline, the air temperature does not fall below zero, and the amount of waste from individual plumbing fixtures is less.

When choosing pipes, the following parameters are taken into account:

• the internal diameter of plastic sewer pipes is considered one of the most important characteristics, which ensures unhindered drainage of wastewater at a certain point in the system;
• external diameter;
• wall thickness (affects the strength of the pipe);
• type of plastic.

Also, when choosing plastic sewer pipes, their dimensions are of great importance, this primarily concerns the length. Properly purchased elements are the key to high-quality operation of the sewer system and its convenient installation.

Plastic pipe rigidity

Such a parameter of plastic pipes as strength differs for internal and external systems.

In order to distinguish them, manufacturers paint products in different colors(see photo):

• in light brown - pipes for arranging internal sewerage;
• in orange-brown - for external networks.

Plastic sewer pipes differ according to their hardness class:

• SN 2 - products are intended for laying pipelines in areas where vehicle traffic is absent or limited;
• SN 4 – products are used in areas with constant moderate vehicle traffic;
• SN 8 - this class of products is used in areas with heavy traffic of heavy and passenger vehicles.

Dimensions and diameter of plastic sewer pipes

Manufacturers of sewer pipes must indicate their outer diameter and wall thickness. To carry out installation work, plumbers need to know the internal diameter. To determine it, the wall thickness is subtracted from the outer diameter.

Plastic pipes for sewerage, the sizes vary depending on their purpose.

Features of installation and operation

1. Since plastic is lightweight and thin material, it cannot absorb vibration and acoustic vibrations. This problem is solved by placing the pipeline in a special box or foam shell.
2. When connecting a pipe to a socket, you should chamfer it outside and clean the burrs from the inside. If this is not done, a blockage will form in places where there are irregularities in the pipeline.
3. When connecting system elements, you need to use a lubricant - for example, glycerin, grease.
4. To fix plastic pipes at a certain angle of inclination, plastic latches and clamps are used.
5. The neck of each pipe is fixed with a clamp, especially when installing a compensating pipe, since the sealing rings will obviously not be enough.
6. Suspensions and clamps should be located on horizontal sections of the network every 50 centimeters.
7. External pipeline buried under dirt roads by more than 50 centimeters or hidden in a reinforced concrete box.
8. When there is an increased load on the ground, a corrugated plastic sewer pipe is used.

Cleaning plastic pipes plumbing cable with a rubber tip or if there is a blockage, disassemble a section of the pipeline.

During installation sewer systems Two types of pipes are used - cast iron and plastic. The size of these products is regulated Technical Conditions(THAT). The standard size, namely diameter, ranges from 50 to 110 mm.

There are products with larger or smaller diameters. From this article you will learn the main parameters that products made of PVC and cast iron have.

They are produced in accordance with TU 2248-022-23208482-02, which allows you to choose an option for any system.

What types of sewer pipes are there?

Today, sewer systems are made from two types of pipes: plastic and metal. Plastic can be of three varieties, from:

Advantages

• Resistant to chemicals such as acids, alkalis, solvents.
• Durability - they can be buried in the ground to a depth of 16 meters.
• Smooth inner surface, which prevents the formation of plaque inside.
• Light weight - the weight of one meter with a diameter of 110 mm will be only 1.5 kilograms.

Metal sewer pipes cannot boast of a large selection of materials; they are produced only from cast iron.

Advantages of cast iron pipes

• Durability - the service life of cast iron products exceeds 60 years.
• Durability - they allow you to install a riser of almost any length.
• Easy installation - the products have a socket, which simplifies installation.

Of course they are very heavy, but this is compensated by their colossal strength.

After familiarizing yourself with the properties of the two types of pipes, you can move on to their sizes.

Plastic pipe sizes

As mentioned above, plastic pipes come in three varieties: PVC, PP, PET. They differ from each other in characteristics, both basic and technical.

And only the sizes remain standard, regardless of the type. Thus, in one system it is possible to use several types from different materials.

Size and PVC application pipes

PVC pipes are produced in accordance with GOST R 51613 - 2000 and VSN 48 - 96. Pressure pipelines are regulated by GOST, and non-pressure pipelines are regulated by construction standards (VSN).

In accordance with building regulations, gravity pipes have three diameter sizes - 50 mm, 90 mm, 110 mm. The wall thickness is 3.2 mm, length 0.5 - 8 m.

Pressure ones differ significantly from their non-pressure counterparts. The number of standard sizes is 13 pieces, and the diameter varies from 63 mm to 315 mm.

However, despite such a large assortment of plastic pipes, not all are in demand. The most commonly used options are:

• Apart from the most popular options 100 and 110 mm, the 75 mm pipe is very popular. They are used as outlets from bathtubs and showers.
• Pipes with a diameter of 100 and 110 mm are used for the construction of risers and installation of external pipelines.
• 200 and 300 mm pipes are used for the installation of industrial sewerage.

PET sewer pipes

Polyethylene pipes are produced in accordance with GOST 22689.2-89 regulations, and have only 4 varieties. The diameter is 40, 50, 90 or 110 millimeters. If the pipe is made of polyethylene low pressure, then the thickness of its walls will be only 3 mm.

PET pipes high pressure are produced in smaller diameters, and the wall thickness is: 3 mm for pipes with a diameter of 40 - 50 mm, and 5 mm for a diameter of 90 - 110 mm. The length can vary from 2 to 9 meters, and this directly depends on the diameter of the product. The larger the diameter, the longer the length of the segment.

Polypropylene pipe

Internal pipes made of propylene are produced in accordance with TU 4926-002-88742502-00. In accordance with these conditions, their diameter can be 50, 100 and 150 mm, and the wall thickness from 3 to 5 mm depending on the diameter. Are used polypropylene products both for risers and for outlet lines from plumbing fixtures.

There are also larger polypropylene analogs that are used for laying external drains. For example, products famous brands Pragma and Korsis can have a diameter from 110 mm to 1.2 meters.

Dimensions of cast iron sewer pipes

Functionality is divided into two types:

1. SMU – there is no detachable connection, i.e. both ends are smooth;
2. SME - equipped with a bell at one end, smooth at the other.

The size is characterized by the internal diameter, for example: the marking DN 100 means that the diameter inside is 100 mm, and outside it will be 110 mm. Standard markings for cast iron pipes are from DN 50 to DN 400. Pipes without sockets, with smooth ends, have increased strength and are produced in lengths of 3 m, while conventional split pipes can be from 15 cm or more.

The wall thickness of cast iron pipes is practically no different from plastic pipes and is 4 - 5 mm. But despite the same dimensions - length, diameter and wall thickness, the mass of metal and plastic products differs significantly. For example, 1 meter of cast iron pipe with a diameter of 100 mm weighs 14 kg, and a plastic analogue of the same dimensions will have a mass of no more than 1.5 kg.

In the table below, you can see the recommended diameters of plastic pipes for carrying out internal or external sewerage. All data provided are advisory in nature and may change up or down, depending on technical characteristics plumbing fixtures or sewer system.

Sewer plastic pipes: diameters, prices

Every owner wants everything in his household to work, nothing to break, and to be easy to maintain and install. And sewerage is no exception. It needs to require as little attention as possible - it is very inconvenient if it gets clogged, but it is no less unpleasant to clean it. If you want to have a trouble-free drainage system, pay attention to plastic sewer pipes. They are gradually replacing cast iron ones, and all because they cost less, are easier to install, and have a large assortment - different diameters and length, almost no deposits form on their smooth walls, and their service life is about 50 years. This whole bouquet of properties determines their popularity.

Plastic sewer pipes are made from various polymers and their compositions

Types of plastic sewer pipes

Products made from different types polymers:

• polyethylene (PE):
  • high pressure (HPP) - for internal wiring sewerage;
  • low pressure (LDPE) - can be laid outside, in trenches (they have greater strength);
• polyvinyl chloride (PVC);
• polypropylene (PP)

And further whole line other thermoplastics and their combinations, but they are rare - people prefer to use already known materials.

The material of plastic sewer pipes is selected depending on the application. For example, polypropylene is more suitable for installing sewerage inside a house or apartment. It has a higher operating temperature range - it normally tolerates environments up to 70°C, and for short periods - up to 95°C. If there are different household appliances, discharging waste hot water into the sewer, it will not be superfluous. PVC pipes having more than low prices, are more appropriate when laying external sewerage- here the wastewater is usually already mixed, so the temperatures are lower and PVC can tolerate them without harm (working up to +40°C, short-term increase to 60°C).

An example of an in-house sewerage system made from plastic pipes

Sewer pipes can also be smooth or corrugated. Moreover, not only siphon bends can be corrugated. There are profiled pipes for sewerage with an internal smooth wall and an external ribbed one. They have greater strength - they can better withstand compressive loads (they have increased ring rigidity) and can be buried to great depths. Available in diameters from 110 mm to 1200 mm.

Dimensions and diameters

Sewage plastic pipes, unlike water and gas pipes, are produced in the form of lengths of 50 cm, 100 cm, 200 cm, etc. - up to 600 cm. Maximum length- 12 meters, but some manufacturers can make longer sections upon request. When laying long routes, this is convenient - there are fewer connections, fewer possible places for problems to arise (leaks or blockages).

More important characteristics plastic pipes - diameter and wall thickness. In the markings they usually go side by side: the numbers are 160 * 4.2. What does it stand for: outside diameter pipes 160 mm, wall thickness 4.2 mm. It’s worth remembering here that manufacturers indicate the outer diameter of plastic pipes, and many calculations and planning require knowing the inner one. It is easy to calculate: from the outer wall we subtract twice the wall thickness: 160 mm - 4.2 mm * 2 = 151.6 mm. Calculations and tables usually show a rounded result - in this case - 150 mm.

Parameters of sewer plastic pipes

In general, the industry produces plastic pipes for sewerage with a diameter of 25 mm. The maximum cross-section depends on the type of pipe (smooth or corrugated) and the material from which it is made. For example, smooth PVC sewer pipes can have a diameter of up to 630 mm, and profiled two-layer pipes can have a diameter of up to 1200 mm. But these dimensions are of no use to homeowners or apartment dwellers. In private housing construction, diameters up to 100-110 mm are mainly used, rarely up to 160 mm. Sometimes, for a large cottage with a large number of plumbing fixtures, a pipe of 200-250 mm in diameter may be needed.

How to choose a diameter for connecting plumbing fixtures

According to the rules, a calculation must be made; it is fully spelled out in SNiP 2.04.01085. This is a complex matter, a lot of data is required, so few people really think as it should. Over the years, accumulated practice has made it possible to derive the average diameters of polyethylene sewer pipes for each of the plumbing fixtures. You can safely use these developments - all calculations usually come down to these dimensions.

Plastic pipes for sewerage: sizes and prices

Which plastic sewer pipes to use for which networks, what to pay attention to. How to choose sizes, how to decipher the markings.

Diameter and dimensions of PVC sewer pipes

Have you ever wondered what causes the high demand for PVC sewer pipes?

The thing is that they are easy to install, easy to use and, most importantly, inexpensive.

The modern market offers a wide range of materials with which sewerage can be installed.

And in order to do right choice, you need to have at least minimal knowledge about their characteristics.

Purpose of PVC pipes and main characteristics

The scope of application of this material depends on its physical properties. It doesn’t hurt to know that polyvinyl chloride is one of the representatives of the group of thermoplastics, which, after heat treatment and even under mechanical stress, retain their shape and integrity. The pipe production process also uses ethylene, stabilized chlorine and additives to improve properties.

The main purpose of PVC pipes is their use in the sewerage system. Depending on their thickness, the scope of use and, accordingly, the type are determined. It could be:

Plastic pipes: orange - for external sewerage, gray - for internal

This classification applies to those models that have undergone appropriate processing. Non-plasticized polyvinyl chloride PVC-U has the best technical characteristics.

Performance properties directly depend on technical characteristics. As for PVC pipes, they are characterized by the following indicators:

• high level of mechanical strength, moreover, three-layer manufacturing technology and external corrugation allows it to be installed deeply;
• resistance to negative influence aggressive environment;
• a perfectly smooth wall from the inside, which prevents the retention of solid elements;
• high internal pressure, minimum 6 bar, maximum 16;
• the highest temperature of wastewater that is allowed is +65 degrees Celsius, and the minimum is -10 degrees. There are models that can withstand +90 degrees, but if this happens for a short time;
• specific gravity 2 kg per linear meter (the figure varies depending on the thickness and diameter);
• the tensile strength is 50 MPa, and the service life is about 50 years.

Features of the diameter and size of sewer pipes

Diameter of PVC sewer pipes

D is the outer diameter of the pipe; Dy is the internal diameter of the pipe; Dр - outer diameter of the socket; Lр - length of the socket; L is the length of the pipe without socket; L1 = L+Lp

Diameter of PVC sewer pipes is the main parameter when choosing them, and this does not depend on whether waste system internal or external. It is worth noting that the different sizes of pipes mean that they are intended for various tasks. Do not forget that the installation of the sewer system will be easy and correct if you choose the right size.

PVC sewer pipe diameter table

According to the table, a pipe with a diameter of 40 mm at a slope of 1.3 cm should be used to drain the bathtub, then:

• shower - diameter 40 mm, slope 1.48 cm;
• toilet - 100 mm/1.2 cm;
• sink - 40 mm/1.12 cm;
• bidet - 30-40 mm/1.2 cm;
• sink - 30-40 mm/1.36 cm;
• combined drain - 50 mm/1.8 cm;
• central riser - 100 mm;
• bends from the riser - 65-75 mm.

Pipeline parameters include:

• external diameter;
• inner diameter;
• conditional passage - means internal section;
• nominal section.

PVC sewer pipe size chart

The table will help you understand what sizes of PVC sewer pipes there are. You can view it below:

Dimensions of PVC sewer pipes - Table 1

The dimensions of pipes for external sewerage are not regulated in any way; the only recommendation is that its diameter should not be smaller than the circumference of the external main. For example, in private houses pipes with a diameter of 110-250 mm can be used, and in intensive load systems even larger (about 400 mm).

Dimensions of PVC sewer pipes - Table 2

The thickness of the material is also of considerable importance in operation; it depends on the stiffness class to which the pipe belongs. If we talk about wall thickness, then for sewerage installation internal type There are no specific standards, but in gravity systems it is not advisable to use pipes thinner than 1.8 mm.

How to choose the optimal diameter of sewer pipes?

Of course, the availability of PVC pipes of different sizes can be considered an advantage, but for those who encounter them for the first time, certain difficulties may arise when choosing. To avoid misunderstandings, it is important to know that:

• the diameter of the horizontal pipe cannot be less than the riser through which they pass wastewater. This may cause blockages;
• horizontal connections are mounted only with the help of oblique tees and angles, this prevents unnecessary clogging;
• It is mandatory to install an inspection at each turn, which is a special hole for cleaning. In multi-storey buildings they are installed every 3 floors. Even if the area is long (more than 12 m) and deaf, an inspection will still not hurt;
• the optimal slope of the sewer pipe is 1.2 cm;
• cutting hollow objects that are not too wide is quite simple using a hacksaw or grinder.

How to choose the diameter? If you will be using a pipe to drain a dishwasher or washing machine, then its circumference should be 25 mm, and if it is a siphon or shower stall, then 32 mm. On average, sewer pipes installed inside an apartment should be 40-50 mm. Hollow objects are used for the street round section with a diameter of 160-200 mm.

Methods for connecting PVC pipes depending on their diameter

If the pipe circumference does not exceed 63 mm, then the following connection technologies are allowed for their connection:

1. socket welding - the principle is to place a smaller object into one that is larger;
2. sleeve welding - an additional part in the form of a sleeve is used.

This is what the coupling looks like

Some models have threaded connections, and their use requires flare fittings.

In the case of pipes larger than 63 mm in diameter, the butt welding method is used. No couplings are needed here, however, the reliability of the connection is in no way inferior to similar methods.

Diameter of PVC sewer pipes: size table

The diameter of PVC sewer pipes is the main parameter when choosing them, and this does not depend on whether the sewage system is installed internally or externally.

Dimensions of plastic sewer pipes

Nowadays, plastic pipes have replaced the former cast iron and metal sewer pipes. They are gradually replacing old materials for sewerage installation from use, as they have better technical characteristics.

The advantages of plastic sewer pipes include:

• simplicity and speed of installation: they are easy to cut and connect;
• light weight: easy to transport and move, installation can be easily handled by one person;
• impossibility of damage from corrosion and the absence of roughness on the inside of the pipes, on which decomposition products can gradually build up;
• durability: the manufacturer guarantees a fifty-year service life for plastic sewer pipes, and in reality they will last longer.
• cheap: compared to cast iron and metal, plastic pipes cost mere pennies.

The disadvantages of plastic sewer pipes include:

• increased noise compared to cast iron: this is felt in panel apartment buildings with high sound permeability;
• susceptibility to high temperatures: When the temperature inside the pipe is above ninety degrees, the pipe gradually softens and deforms. But in the sewer system, as a rule, such high temperatures are not created for a long time.

Standards and range

The parameters and dimensions of plastic sewer pipes depend on their area of ​​application - whether it is an internal pipe or an external one. The outer ones have greater wall thickness, and, consequently, strength. Plastic pipes differ in the material from which they are made:

1. Pipes made of polypropylene (PP), the most common option, are produced in accordance with GOST 26996-86, which determines the composition of PP and copolymers. GOST does not establish a specific standard for them “plastic sewer pipes sizes”. But in conditions market economy standard sizes PP pipes developed independently: the following diameters of sewer plastic pipes are available for sale: 32, 40, 50 and 110 mm; length options: 150, 250, 500, 750, 1000, 2000 and 3000 mm.
2. Polyethylene pipes high density(PVP) are produced in accordance with GOST 22689.2-89. Since they are produced wound into spools and cut into lengths of any size required length, GOST establishes only their diameters: 40.50, 90 and 110 mm. PVP pipes are divided into pressure and non-pressure. For pressure pipes GOST 18599-83 prescribes the diameter of sewer plastic pipes from 10 to 1200 mm.
3. Polyvinyl chloride (PVC) pipes. The dimensions of this type of plastic sewer pipe are established by GOST 51613-2000. According to his instructions, PVC pipes should be from 10 to 315 mm in diameter, with a length of 4 to 12 m.

Dimensions of plastic sewer pipes: diameters, lengths, manufacturers

Dimensions of plastic sewer pipes: diameters, lengths. Standards and assortment: polypropylene (PP) pipes, high-density polyethylene (HDPE) pipes, polyvinyl chloride (PVC) pipes

Sewer plastic pipes: dimensions, characteristics, installation features

Plastic sewer pipes in many areas of human activity have today almost completely replaced traditional metal pipes. The first is based on:

The most popular for arranging modern sewer systems are PVC pipes, because they are resistant to aggressive substances found in household and industrial wastewater. Negative Impact elements that are in the ground can also have an impact.

Why use plastic

If we're talking about As for high-quality plastic pipes for laying sewers, they have a perfectly smooth surface, so clogging during operation is extremely rare. During installation, there is no need to use any special tool; a hacksaw for metal will be sufficient for cutting, and its small teeth practically do not form burrs.

Key Features

Sewer plastic pipes are made from complex polymer compounds that are obtained during use latest technologies. This guarantees durability and reliability. If you want to choose especially durable products, then you should prefer metal-polymer sewer pipes.

Plastic pipes are quite easy to install; their installation requires less labor, this applies not only to the inside of the house. Such products have excellent throughput and are easy to bend at a certain angle. You can lay the pipes yourself. They have many advantages, including:

• reasonable cost;
• no need for cathodic protection;
• low thermal conductivity;
• reliable protection against the spread of viruses and bacteria;
• durability;
• resistance to chemical influences, corrosion and external aggressive environments;
• light weight.

Sewage plastic pipes are ready to last more than 50 years. They do not require constant maintenance.

Size information

The products described may have the most different sizes. If we are talking about an impressive diameter, then it is designed for increased load, so such pipes are installed to service buildings of social facilities, cottages and apartment buildings. For example, a diameter of 200 mm is suitable for a hospital, hotel or sauna.

If the diameter is increased to 300 mm, then such a pipe will be suitable for the operation of industrial facilities. IN individual construction small diameter products are required. A 150 mm riser will not be fully used, even if there are several bathrooms in the house. Square pipes can be used to solve irrigation problems personal plots. To organize drains from individual appliances such as washbasins, showers and baths, you can use 75 mm pipes.

To ensure the toilet works, it is necessary to use a 100 or 110 mm pipe. When choosing sizes, it is also important to take into account the wall thickness, which will depend on the diameter of the pipe. If the cross-section is 160 mm, then the wall thickness will be 3.9 mm. In this case, a parameter of 110 mm will indicate that the wall thickness is 3 mm.

The weight of the pipe also depends on the diameter. For example, a 160 mm pipe weighs 2 kg, while a 110 mm pipe will weigh 1 kg. Sewage plastic pipes also have a certain length. According to state standards, manufacturers produce separate sections from 1 to 6 m, the step will be 1 m.

Specifications

Plastic sewer pipe, the characteristics of which you should know before purchasing of this product, has a high mechanical strength. This is due to three-layer manufacturing technology and external corrugation. That is why these elements can be installed to a depth of up to 8 m. The pipes are resistant to aggressive environments. This especially applies to PVC-U materials, because they are used for transporting gases and chemical liquids.

The internal pressure will depend on the wall thickness and design, the maximum value can be up to 16 bar, while the minimum is 6 bar. The main disadvantage of these pipes is temperature limitation. Maximum temperature is 65 °C, while the minimum is -10 °C.

Some models allow short-term exposure to temperatures up to +90 °C. Specific gravity may vary depending on the wall thickness and diameter, but on average it is 2 kg per linear meter. At rupture, the maximum tensile strength is 50 MPa.

Characteristics of plastic sewer pipes for indoor installation

The sizes of plastic sewer pipes have been mentioned above. But this parameter cannot be called the only one that you should be interested in when purchasing these products. For example, it is also important to pay attention to the color, which indicates the purpose.

A gray tint indicates that in front of you is a pipe for internal sewerage. It has smooth walls and is connected by a socket. The most popular sizes are: 32, 40, 50 and 110 mm. The length can vary from 315 to 3000 mm. Taking into account the rigidity conditions, the wall thickness should be selected. However, for gravity systems this parameter cannot be less than 1.8 mm.

Characteristics of pipes for external sewerage

External plastic sewer pipes are usually yellow or orange colors. They are used for outdoor installation and are used under more severe conditions. This determines that they have their own list of wall thicknesses for each diameter. For example, for a 200 mm diameter the wall thickness will be 3.9 mm. This applies to pipes for light conditions; they are laid to a depth of up to 4 meters.

With the above diameter, the wall thickness will be 4.9 mm if the pipes are operated under average conditions of rigidity and are buried 6 meters. The wall thickness will be increased to 5.9 mm if the burial depth reaches 8 meters and the rigidity conditions are severe.

Cost of sewer plastic pipes

A plastic sewer pipe 50 mm is a product where the diameter is indicated. You will have to pay 94 rubles for the product. In this case, the wall thickness will be 3.2 mm. In this case, we are talking about hardness class SN 4. A plastic sewer pipe 110 mm will cost the consumer 200 rubles. The wall thickness remains the same. With an increase in diameter to 160 mm, the price increases to 579 rubles.

Connection Features

Plastic sewer pipes must be securely sealed and connected to each other. Ultimately, the master must obtain a complete design. For this, universal fittings are used, including:

A tee Y-fitting is used for connection at an angle of 45°C. If it is necessary to form a right angle, a T-Y fitting should be used. If you need to connect a pipe of a larger diameter with a thinner pipe, then a sleeve is put on the socket, which allows you to reduce the diameter.

To avoid blockages, experts recommend using any connections less frequently. Before connecting sewer plastic pipes, the structures should be cleaned; this is necessary when the pipe will be soldered to the socket. If uneven surfaces form on the inner wall, they will collect solids from the drain. When connecting with force, you can use a lubricant such as soap, glycerin or grease.

Carrying out installation

The dimensions of the plastic sewer pipes must be selected before you begin laying the system. Next you need to follow technology. At the first stage, the elements are adjusted, and the master needs to check the correspondence of the slopes and angles. You can make markings so as not to get confused in large quantities nodes

On next stage elements are connected to each other. It is important to check that the product fits into the socket one third of the seat. However, you should not attach special effort. To ensure tightness, the connections are glued together with a special compound. After applying it, you can put on the fitting. To create a branched system, you can use tees or other distribution elements. After completing the work, it is important to check the tightness of the system within an hour. If no leak is found, then installation work were carried out successfully and efficiently.

Features of arranging a sewerage system using plastic pipes

Plastic sewer pipes, the prices for which were mentioned above, must be laid with a certain slope, which will ensure unhindered discharge of waste and wastewater.

If the slope is too great, then build-up will form on the inner walls, which over time will lead to the formation of blockages and traffic jams. If the slope is made smaller or not provided at all, then the wastewater will not leave the house on its own, and the system in this case will be inoperative. Plastic sewer pipes, the prices of which should interest you if you plan to use them when arranging the system, are used in conjunction with metal fan pipe. It is required for ventilation and is installed at a height of four meters. Its diameter usually varies from 50 to 110 mm.

When it comes to urban multi-storey buildings, where it passes through all the floors sewer riser, its diameter must match the outlet pipe from the toilet. This value is 110 mm. In this case, the pipe is routed to the roof, it is left open. It will communicate with the atmosphere and eliminate vacuum, which could lead to the appearance of unpleasant odors.

When assembling the riser, it is important to strengthen the neck of each pipe with a clamp. If a compensating pipe is installed, its fastening is carried out using the same technology. You should not assume that O-rings will suffice for plastic pipes. Over time, they will certainly become loose, and the joints may lose their tightness.

Conclusion

Installation of plastic sewer pipes is quite often carried out under highways. In this case, the system should be located at a depth of one meter or more. If it is no longer possible to deepen the system, then it must be pulled through a reinforced concrete box.

It is important not only to correctly lay the sewage system made of plastic pipes, but also to ensure operation in accordance with the rules. To clean sewer risers, steel wire is used, which is not suitable for plastic structures. This is due to the fact that the wire can scratch the inner walls of the products. Therefore, it is recommended to use a soft cable that is protected by a rubber tip.

Sewer plastic pipes: dimensions, characteristics, installation features

Plastic sewer pipes are made from complex polymer compounds, which are obtained through the use of the latest technologies. This guarantees durability and reliability. If you want to choose especially durable products, then you should prefer metal-polymer sewer pipes.

The parameters and dimensions of plastic sewer pipes depend on their area of ​​application - whether it is an internal pipe or an external one. The outer ones have greater wall thickness, and, consequently, strength. Plastic pipes differ in the material from which they are made:

1. Pipes made of polypropylene (PP), the most common option, are produced in accordance with GOST 26996-86, which determines the composition of PP and copolymers. GOST does not establish a specific standard for them “plastic sewer pipes sizes”. But in a market economy, the standard sizes of PP pipes have developed independently: the following diameters of sewer plastic pipes are on sale: 32, 40, 50 and 110 mm; length options: 150, 250, 500, 750, 1000, 2000 and 3000 mm.
2. Pipes made of high-density polyethylene (HDP) are produced in accordance with GOST 22689.2-89. Since they are produced wound into coils and cut into pieces of any desired length, GOST establishes only their diameters: 40.50, 90 and 110 mm. PVP pipes are divided into pressure and non-pressure. For pressure pipes, GOST 18599-83 prescribes the diameter of sewer plastic pipes from 10 to 1200 mm.
3. Polyvinyl chloride (PVC) pipes. The dimensions of this type of plastic sewer pipe are established by GOST 51613-2000. According to his instructions, PVC pipes should be from 10 to 315 mm in diameter, with a length of 4 to 12 m.

Sewer pipes, like any equipment, require replacement over time. Now old cast iron pipes are increasingly being replaced with modern PVC (polyvinyl chloride) products, which has many advantages over metal.

Polyvinyl chloride is modern material, which has proven itself well in the pipe and fittings market.

Typically, PVC pipes are used when laying sewers (both internal and external), in pressure systems and wells, drainage structures and gravity drainage.

PVC products differ:

• anti-corrosion properties;
• immunity to damage by microorganisms;
• smoothness inner surface, which prevents sedimentation and sediment build-up;
• dielectric properties (polyvinyl chloride does not conduct electricity);
• environmental safety, absence of harmful emissions;
• inertness (PVC pipes do not come into chemical contact with the transported medium);
• resistance to temperature changes;
• resistance to barometric loads;
• long service life;
• ease of installation;
• light weight of products;
• a large assortment of pipes for various purposes and shaped products;
• attractive cost, which is significantly lower than the price of metal ones.

Passing inside PVC premises pipes in most cases do not need insulation. If such a need arises (for example, when installing underground communications or installing under open air), it is rational to additionally insulate and insulate the pipeline.

Types of PVC sewer pipes and adapters

Depending on which section of the highway the product will be used, there are:

1. Lightweight pipes SN-2 are used in areas with the least load: when laying domestic sewerage indoors, as well as in residential areas where there is no traffic load.
2. Denser SN-4 pipes are used for laying sewers under roads with moderate traffic.
3. Industrial pipes SN-8 are intended for use in neighborhood and city sewerage mains, in production, as well as in areas with intense traffic load.