Chrysotile cement pipe: specifications and application

2024 Author: Howard Calhoun | [email protected]. Last modified: 2024-01-17 18:37

Communication systems consist of channels of a certain size. As a conducting element in many of them, a chrysotile cement pipe can be used, the main substance of which is a type of asbestos. This component is less safe than the amphibole analogue, which is banned in European countries due to carcinogenic activity.

Operational advantages and disadvantages

There are quite a lot of materials used for the production of pipelines. Each of them has its own advantages, depending on which conclusions are drawn about the possibility of using it in a particular situation. Further, it is proposed to consider what positive qualities chrysotile cement pipes have.

Basic benefits include:

• capable of operation when exposed to aggressive environments;
• low thermal conductivity;
• easy installation technology;
• no corrosive processes during use;
• long service life.

Of the minuses, excessive fragility should be noted. This causes certain difficulties when laying or installing elements. Products mostly break under point mechanical action.

Classification and application

Chrysotile cement pipes can be divided into two broad categories. The first of these includes pressure-type products. Such elements have increased strength, so they can be used in communication networks with internal pressure. However, they are not allowed to be used as heating mains for hospitals, kindergartens, schools and other specialized institutions.

The second category is represented by non-pressure products. Chrysotile cement pipe BNT 100 mm is the most popular. It is often purchased to create a sewer system for a private house or a drainage structure for a site. Sometimes cables are laid inside the elements to organize communication channels.

Non-pressure type products are also actively used as chimneys if the exhaust gas temperature does not exceed 300 degrees. They can be useful in landscaping. With their help, flower beds, urns are arranged, and columns are also erected. In some cases, the BNT chrysotile cement pipe plays the role of a foundation support post. The number of load-bearing elements is determined by the mass of the building and the cross section of the strapping bars.

Technical data for non-pressure products

With the help of the presented products, mainly communicationsystems without pressure. In this regard, it is proposed to consider the technical indicators of non-pressure elements.

Parameters	Type
	BNT 100	BNT 150	BNT 200
Outer diameter in centimeters	11, 8	16, 1	21, 3
Sidewall thickness in millimeters	9	10	11
Length in meters	3, 95
Weight of one linear meter in kilograms	6, 1	9, 4	18

Chrysotile cement pipes have such characteristics. GOST for their production (GOST 31416-2009) allows you to control the quality. The documentation points provide the main requirements for the final product.

There should be no chips or cracks on the surface of manufactured products. It is allowed to deviate from straightness by no more than 12-24 mm (depending on the length of the element). The value of the tested hydraulic pressure for free-flow analogues must be more than 0.4 MPa.

Product marking

To simplify the selection process, the chrysotile cement pipe must be marked in some way. Usually, a special marking is applied to the outer surface of the product using paint. The inscription containsinformation about the manufacturer, element type, nominal size and lot number.

Transportation and storage

Items must be securely fastened during shipping. In the process of unloading, it is not allowed to drop products directly from the machine. Pipes should be laid in stacks on a platform with a flat surface. If there are bumps and depressions in the storage place, then wooden spacers are used as the basis. In this case, it is desirable to fix the bottom row.

Production process

A chrysotile-cement pipe is made from a construction mixture reinforced with fibers. First of all, the main component is crushed mechanically. Next, a liquid composition is prepared. For 85 percent of the binder, only 15 percent of chrysotile asbestos is placed. In the production, raw materials that meet the requirements of these standards must be used. The activity of radionuclides plays an important role. Its values must comply with the standards that were approved by the GOST clauses.

A little about accessories

The main element is a chrysotile cement pipe. However, it is usually supplied with special couplings. When carrying out work, parts of the same class must be used. As for pressure analogues, they are also equipped with sealing rings made of rubber.

Warranty

If the consumer complied with the recommended rulesstorage, operation and transportation of products, then he can count on the period during which the replacement of low-quality elements can be made. This period is no more than 1 year from the date of shipment by the manufacturer.

Features of installation work

When laying pipelines, there is no need to use heavy machinery or special equipment for connection. Docking is carried out by means of polyethylene or chrysotile-cement couplings. If necessary, rubber seals are inserted, which makes it possible to achieve an acceptable seal. Under pressure, the gaskets adhere tightly to the surface. The radial clearance located between the coupling and the pipe itself allows you to obtain the necessary bend when connecting. A communication channel without compensators is considered inexpensive, but at the same time reliable.

It should be noted that for drainage systems, not ordinary elements are used, but perforated ones. Through the holes, excess moisture from the site enters directly into the channel, after which it is discharged into the collector. To avoid blockages, it is recommended to use a permeable gravel-filled membrane.

Final part

For communication networks of a private house, a 100 mm chrysotile cement pipe is usually purchased, since in many cases it is the best option. If necessary, you can buy elements with a larger or smaller diameter. However, it must be remembered that with an increase in the cross section, the side walls are significantly thickened.products, so the mass increases significantly. For the same reason, the cost of production also increases.