Sewer pipes – types and features, specific differences

Sewer pipes

Sewer pipes – products without which today it is impossible to imagine any comfortable housing. Why is sewage needed and how important is its full functioning, is known and understandable to everyone. But still the question remains, which pipes are better for sewage, because their range is wide, and the sewer system should serve reliably and efficiently.


  • A modern alternative to obsolete pipe rolling
  • Types of sewer pipes
  • Cast Iron – The Traditional Solution
  • Plastic pipes, priorities
  • Pipeline for stormwater drainage
  • Sewer pipe insulation
  • A modern alternative to obsolete pipe rolling

    Waste and dirty water are discharged through a sewer system, which in turn is divided into external and internal. Sewage system is one of the most necessary modern engineering communications. In the 60-70s, the traditional sewer system was constructed mainly of ceramic or concrete pipes. But progress does not stop, alternative materials appear, therefore the replacement of sewage pipes is extremely urgent today, and this is not surprising, modern pipelines have indisputable advantages:

    – lack of electromechanical corrosion;

    – the inner surface of the pipes is smooth – friction loss is reduced;

    – labor saving (2-3 times)

    And plus everything, the cost of polymer pipes is 30-50% lower than metal.

    Types of sewer pipes

    First of all, sewer pipes are divided into two main types: plastic and cast iron, that is, depending on the material.

    Cast Iron – The Traditional Solution

    Cast iron pipes for sewage have been used for a long time and are widely used for these purposes. This is a classic genre, and cast iron is characterized by many positive qualities..

    Cast iron pipes

    Cast iron sewer pipes

    These pipes are durable, durable, sewage from cast-iron pipes has been used for many years. But despite the advantages, there are also some disadvantages, for example, the impressive metal costs and, as a result, the large weight of the finished pipes.

    In addition, the inner surface is characterized by roughness, which means that resistance to the flow of water is created, for this reason, growths form inside the pig-iron pipeline. Installation due to the heavy weight of the pipes is complicated and time-consuming. Well, the most significant drawback, pig-iron pipes are expensive, since the production of this metal is not cheap.

    Plastic pipes, priorities

    Plastic pipes for sewage provide high-quality functionality of this communication. Such pipes are used for domestic sewage and for outdoor.

    Plastic pipes for domestic sewage

    Plastic pipes for domestic sewage

    They have several advantages:

    • a smooth surface creates favorable conditions so that no clogging occurs in the pipes;
    • light weight – an excellent indicator for transportation and installation. During installation, special equipment is not used, sealing with a solution – a plastic pipe is simply inserted into the socket of another pipe, with a sealing ring made of high-quality rubber, which ensures a tight connection for many years. Or installation is carried out using fittings;
    • low cost in comparison with steel and cast iron;
    • long service life.

    Important: proper installation, taking into account all requirements and standards, gives an excellent opportunity to arrange a room with a neat appearance. That is, pipes can be hidden in walls and floors without worrying about their tightness.

    Plastic sewer pipes for outdoor sewage, and for the inner one, they are made of three types of plastic: high density polyethylene, briefly PVP, polyvinyl chloride – PVC and polypropylene – PP.

    PVC pipes

    PVC pipes for sewage are used to a greater extent for gravity-type sewers. They are resistant to ultraviolet radiation, and a low linear coefficient of expansion is perfect for sewage purposes. PVC pipes are characterized by high strength and good resistance to mechanical damage, as well as withstand drains with a 70-degree temperature. But here the fact of exposure to chemicals, aggressive detergents and high temperature liquids negatively affects the condition of the pipes, the walls are damaged and a plaque occurs, which eventually turns into a blockage.

    Polyethylene pipes

    Sewer polyethylene pipes are designed for internal and external pressure pipelines. They are the most non-heat-resistant and expand when exposed to high temperatures. – 40 ° С to + 40 ° С – low range of operating temperatures of polyethylene pipes, therefore, for sewerage with the discharge of hot water their use is not recommended.

    Pipes for sewage polypropylene

    Pipes for external sewage and for internal can be polypropylene. These are excellent pipes that are widely used for the drainage from dishwashers and washing machines, as they are resistant to the destructive effects of alkalis and acids. They are also resistant to mechanical damage and withstand temperatures up to 100 degrees, and this is very good quality..

    Pipeline for stormwater drainage

    Flexible corrugated pipe

    Corrugated pipe for storm sewer

    Pipes for storm sewers, especially used in suburban areas, are corrugated flexible two-layer. Corrugated pipe for sewage has ring stiffness and increased strength, so it can be used in places of heavy load. And flexibility indicators significantly reduce the number of fittings and significantly save money.

    External sewer pipes are painted in orange or red-brick color. At the same time, pipes for domestic sewage are made in gray tones..

    Pipes for outdoor sewage

    Plastic pipes – a great option for a sewer

    In addition, sewer pipes are also classified by size, but the dimensions of the sewer pipe are individual, depending on specific needs..

    Sewer pipe insulation

    Thermal insulation of sewer pipes

    Thermal insulation of sewer pipes is an important stage

    The durability and reliability of sewer communication depends on many factors. Warming of sewer pipes is an important condition. Pipes for external sewage must be insulated so that in severe frost the water in it does not freeze. The result of freezing can be a burst pipe or the formation of an ice plug, then all the liquid will come out, and this is an extremely unpleasant phenomenon. And most importantly, in the winter time such malfunctions are very difficult to resolve, so warming must be taken care of in advance.

    High quality pipes are a direct path to successful operation, but adherence to the process also does not need to be discounted. Today, people often encounter poor quality materials and, unfortunately, the consequences become noticeable after the system starts, when failures begin. To avoid such misunderstandings, you should purchase sewer pipes in specialized stores, requiring sellers to get the appropriate certificate.


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