Chrysotile-cement pipe: technical characteristics and application

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

Operational advantages and disadvantages

The materials used for the production of pipelines are quite numerous. Each of them has its own merits, depending on which conclusions are drawn about the possibility of use in a particular situation. Further it is proposed to consider what positive qualities chrysotile cement pipes possess.

The basic advantages include:

• The possibility of exploitation under the influence of aggressive media;
• Low level of thermal conductivity;
• Simple mounting technology;
• Absence of corrosive processes during use;
• Long service life.

Of the minuses, it should be noted excessive brittleness. This presents certain difficulties when laying or installing the elements. The products are mostly broken off under point mechanical action.

Classification and application

Divide chrysotile cement pipes into two large categories. The first of these includes production of pressure type. Such elements have increased strength, and therefore can be operated in communication networks with internal pressure. However, they can not be used as heating mains for hospitals, kindergartens, schools and other specialized institutions.

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

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

Technical characteristics of non-pressure products

With the help of the products presented, mainly communication systems are arranged, in which there is no pressure. In this regard, it is proposed to consider technical indicators of precisely non-pressure elements.

Such characteristics are chrysotile-cement pipes. GOST for their production (GOST 31416-2009) allows you to control the quality. The documentation points out the main requirements for the final product.

On the surface of the products produced there should be no chips or cracks. From straightness it is allowed to deflect by no more than 12-24 mm (depending on the length of the element). The value of the tested hydraulic pressure for non-pressure analogs should be more than 0.4 MPa.

Product Marking

To simplify the selection process, the chrysotile cement pipe must be somehow labeled. Usually, a special marking is applied to the external surface of the product with the help of a paint. The inscription contains information about the manufacturer, the type of the element, the conditional pass and the batch number.

Transportation and storage

When transporting items must be securely fastened. During the unloading operations, it is not allowed to drop the products directly from the machine. Laying of pipes should be carried out in stacks on a platform with an even surface. If there are hillocks and hollows in the storage area, wooden pads are used as a basis. At the same time, the lowest row should be fixed.

Manufacturing process

A chrysotile cement pipe is produced from a fiber-reinforced building compound. First, the main component is crushed mechanically. Further, a liquid formulation is prepared. 85 percent of the binder is only 15 percent of chrysotile asbestos. In production, raw materials that meet the requirements of these standards should be used. The activity of radionuclides plays an important role. Its values must comply with the norms that were approved by the GOST.

A little bit about the accessories

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

Warranty

If the consumer observed the recommended rules of storage, operation and transportation of products, he can count on the period during which the replacement of defective items can be made. This period is not 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 equipment or special equipment for connection. Docking is carried out by means of polyethylene or chrysotile cement clutches. If necessary, rubber seals are inserted, so that an acceptable seal can be achieved. Under the influence of pressure, the gaskets fit tightly to the surface. The radial clearance, located between the coupling and the pipe itself, allows one to obtain the necessary bending 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, excessive moisture from the site falls directly into the channel, and then is diverted to the collector. To avoid blockages, it is recommended to use a water-permeable membrane with an embankment of gravel.

Final part

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