Polypropylene sewer pipes - an innovative solution in the

22-02-2018
Pipes

This material has recently become a real bestseller, thanks to its excellent qualities. At the same time, polypropylene sewer pipes according to GOST must have certain technical indicators. This information must be known today, so we will introduce you to it.

In the era of high technology, more and more new and sophisticated materials appear.

Properties

Any building material has its own characteristics that it is desirable to know in order to have a holistic view. Therefore, our instruction will tell in detail about them (see also the article Elimination of sewage obstruction: 3 effective ways).

Merits

First of all, we will consider the positive qualities that polypropylene sewage has.

There are a lot of them:

  • Excellent resistance to almost all chemically aggressive substances. This is very important, because different trains can get into the main line.

Interestingly, thanks to this property, this material is not afraid of tools for cleaning pipes.

  • Not afraid of corrosion and rust. In this aspect, polypropylene pipes for sewage benefit from their metal counterparts.
  • Absolutely smooth surface. As a result, various entities do not appear in the system.
Due to the presence of various forms of connecting elements, you can implement the most complex projects.
  • Low weight, which significantly reduces transportation costs.
  • High speed of installation, thanks to a bell-shaped technique of connection.
  • The possibility of mounting their own hands with a bend.
  • The widest range of styles and colors, which allows you to bring to life any ideas.
  • Long service life - about 50 years.
  • Ecological purity. Over time, they do not begin to emit harmful substances.

disadvantages

Unfortunately, any material has its drawbacks. Sewer polypropylene pipes are not an exception.

Let's understand the disadvantages that they have:

Such material allows you to create a variety of fittings. This photo shows only a small part.
  • Perhaps the only serious minus of polypropylene is that it cannot withstand high temperatures. Therefore, it can not be used for heating lines and fire hazardous facilities.
  • Based on the above, it can be stated and the lack of resistance to fire. In case of a serious fire, such pipes will simply melt, which would entail disastrous consequences.
  • The need for special equipment. To create the joints and their further processing, you need special equipment, the price of which is quite high.
  • If we are talking about samples with external reinforcement, they often have defects in the upper layer. In addition, the reinforcing layer is likely to swell when heated.
  • This technology is currently new, so there are cases of assumptions of various defects in production. In addition, there are errors in the choice of connecting elements. As a result, the connection is obtained poor quality, as a result there is a need to constantly tighten the joints with a special key.
These connectors allow you to create any kind of highway
  • In the end, we note that polypropylene is afraid of exposure to direct sunlight. However, quite rarely sewage elements are located in the air.

Species

The main value for sanitary elements is the temperature and pressure in the system. It is by these indicators that the products described by us are classified. There are four types:

Variety Allowable temperature, degrees Operating pressure, MPa
PN10 20 one
PN16 60 1.6
PN20 95 2
PN25 95 2.5

Note: the first type is applicable only for cold water supply, the second and the third for hot water, and the last can be used even for central heating.

Specifications

Now it is time to examine in detail the technical characteristics of sewer polypropylene pipes. We first consider the expected service life, depending on the operating temperatures.

Here you can see what sizes are
Working temperature Estimated Duration Pipe variety
PN10 PN16 PN20 PN25
Maximum possible operating pressure exceeding
20 ten 13.3 21.6 21.6 33.5
25 13.1 21 26 33
50 12.8 20.6 25.8 32.2
thirty ten 11.6 18.6 23.5 9
25 11.1 18 22,6 28
50 109 17.5 22 27.5
40 ten ten sixteen 20.1 25
25 9.6 15.5 19.3 24.2
50 9.1 14.5 18 23
50 9 13.8 17 23.3 21.5
23 7,8 12.5 sixteen 20
46 7.1 11.5 14.5 18
60 ten 7 11.2 14 18
25 6.2 9.5 12.1 15.2
50 5.3 8.5 10.8 13.5
80 five five 7 8.5 10.5
ten 4.8 7 7,8 9.8
25 4.5 6.5 7.2 9.2
95 one 3.8 6.5 7.2 8.5
five 2.8 4.5 5.2 8.2

As you can see, if you exceed the operating conditions indicated in GOST, then the life of the material is significantly reduced. However, in sewer lines, temperatures rarely reach critical values.

Now consider the key characteristics of the example of products Borealis RA - E 130 (Finland), which today are the benchmark for quality in this area.

  • Density - 0.896 g. / Cm3.
  • The turnover rate is 0.3 g. / Min.
  • The softening temperature is 132 degrees (69 according to Vic).
  • Melting point - 145-150 degrees.
  • Heat conduction index - 0,23 W / m * gr.
  • The coefficient of thermal expansion is 1.45 * 10 ^ -4.
  • Specific heat capacity - 2 kJ / kg * gr.
Carefully select the fittings, for the quality of the connection will depend on them.

Note! Different manufacturers, these figures can be significantly different.

At last

On this we finish our story, however, if you still have any questions, then there is no reason for frustration. In the presented video in this article you will find additional information on this topic. Viewing it will help you understand all the nuances (see also the article Sewage treatment plants: how to choose the best option).

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