HDPE pipe for cable in the ground. Types of HDPE pipes for cables in the ground - which ones are best to use and how to install them

Cable routes of any size need protection from external factors and accidental mechanical damage, which can lead to a violation of the integrity of the shell of current-carrying conductors. Previously used metal pipes, concrete, brick protection are quite expensive protection methods to manufacture. The amount of work involved in constructing a shell from them is very large. Accordingly, the cost of arranging such communications is prohibitively high. An alternative is HDPE pipe for laying cables, which has high strength and a long service life.

HDPE pipe for cable laying. Low price, high quality.

Laying cables using polyethylene pipes low pressure a cost-effective way to protect it from damage for a significant period. The production of HDPE pipes does not require extremely high costs, while the quality remains high. The service life of HDPE pipes for laying cables exceeds half a century. In such a pipeline it is very easy to replace failed segments of cable routes.

HDPE pipes for laying cables in the ground. Supplies from the manufacturer.

Basically, cable communications are laid underground. Using HDPE pipes, they can be quickly equipped, even if there is no cable. Subsequently, it is laid into pipelines without much difficulty. Purchasing HDPE pipes for laying cables in the ground directly from the manufacturer will help reduce costs. After all, large volumes of supplies imply corresponding discounts for the buyer of the products.

HDPE technical pipes for laying cables indoors.

Our company produces technical HDPE pipes for cable laying. They make it easy to install electrical wiring in rooms. In a floor screed, concrete pouring or brick wall A smooth polyethylene pipe can quickly insert electrical wiring. If it fails during operation, replacement will not be particularly difficult.

HDPE pipe for laying cable in a coil.

Pipes with a diameter of 20 mm, 32 mm, 40 mm and 50 mm, as well as 63 mm and 75 mm are produced in one hundred and two hundred meter coils. This is convenient when installing communications over long distances, when laying cable routes in open spaces. An HDPE pipe placed in a trench, with a cable installed in it, can be immediately covered with soil. This method significantly reduces costs when using special equipment.

Electrical pipe HDPE PE for cable laying. Selling in sections.

The production lines of our company allow us to produce PE electrical pipes various shapes, diameter depending on customer requirements. The material used in their manufacture is high-density low-density polyethylene. Electrical HDPE Pipes over 75 mm in diameter have high rigidity and are produced in sections of 12 meters. The buyer can order pipes for cable laying in segments of the required length.

Various diameters of HDPE pipes for cable laying.

Non-pressure pipes are manufactured in a standardized manner, with diameters of 20 or more. The catalog presents their main types. Starting with a cross-section of 75 mm, products are produced in 12-meter sections. The customer can choose a standard HDPE pipe diameter for cable laying or order custom sizes polyethylene pipes up to 225 mm.

HDPE pipe 20 mm for laying cables in small projects.

20 mm HDPE pipes for cable laying are used in small projects. As a rule, they are supplied to customers in coils, but can also be supplied in lengths. HDPE pipe 20 mm is used in construction when it is necessary to lay hidden electrical wiring in an apartment, cottage, or private house. They can also be installed with open cable routing to prevent cable damage.

HDPE pipes 160 mm for laying cables in large communications.

In cases where cable communications are installed in residential areas, in large industrial enterprises, where a significant number of individual cables are required, HDPE pipes with a diameter of 160 mm or more are used. In addition, the diameter of 160 mm allows you to make plumbing pipelines for draining sewage.

Technical HDPE polyethylene pipes for cable laying wholesale and retail.

The customer can purchase HDPE pipes manufactured in accordance with the technical requirements for these products at retail or wholesale. Retail allows you to order only the required number of meters. Wholesale beneficial to companies in which the use of technical polyethylene pipes is their daily activity. We deliver goods throughout Moscow, the region, and within the Russian Federation. Clients from any region of Russia can order from us required amount HDPE pipes for cable laying and receive them in the shortest possible time.

Work on laying communications is always associated with the risk of subsequent damage. In other words, the wiring can be damaged both by the soil itself and by the builders if the work is carried out carelessly. To prevent such cases, a special HDPE pipe for the cable was created, which is designed to protect it and protect people from electric shock.

The first and most basic feature is that electrical equipment is created from dielectric materials. That is, it serves as an additional protective layer, which is designed to protect others and the cable itself from dangerous, extraneous influences.

Also, the design of the product allows you to protect the cable from mechanical damage during operation. This guarantees an increase in service life.

Additionally, it is worth noting that for different types styling, products of different designs are used. For example, when pulling power cables through the air, a corrugated HDPE pipe is used, without additional reinforcement or reinforcement - this makes it possible to minimize the weight of the structure and reduce the load on the suspended elements. The main purpose of such protection is to minimize ultraviolet flux, which can destroy the insulating layer.

For underground laying communications, high-strength HDPE pipes are used, often with additional reinforcement. This is necessary to effectively withstand soil pressure and other factors, for example, carelessness of builders (often, cables are touched by bulldozer buckets when performing excavation work).

Advantages of using HDPE pipes

The cable pipe made of low-density polyethylene has a number of features that make its use optimal for various methods gaskets Below is a list of the main advantages.

• Low cost - this type is much cheaper than traditional materials.
• Low weight of HDPE products - much less than metal ones.
• Long service life - more than 50 years.
• High flexibility. The materials used have increased resistance to bending, but we must not forget about the possibility of drawing wiring strands. If the bend is too strong, the wire will not be able to be mounted correctly.
• Providing sufficient technical opening to allow the addition of new wiring.
• Easy to install.
• HDPE casings of relatively small diameter do not require soldering at the ends, which eliminates the need to use complex equipment.
• Does not corrode or age.
• High resistance to significant temperature changes.

This is not a complete list of significant advantages for the use of these materials.

Advantages of corrugated pipe

It is one of the most popular building materials that facilitate the laying of communications.

As a means of increasing the reliability and comfort of installation, additional reinforcement with steel wire can be used - this gives it additional ring rigidity. The corrugation, strengthened in this way, can perfectly withstand the pressure of several meters of soil and perfectly withstand natural factors.

Corrugated covers are also double-walled. The inner surface is smooth and provides good gliding when pulling. The outer part is corrugated, providing significant resistance to aggressive environments.

Special mention is due to the fact that corrugated products can take any shape, as well as their good elasticity. For example, metal protection can bend and burst at the point of application of force, which will lead to moisture penetration into the wiring, but this one does not - it will simply bend, but the integrity will not be compromised. Thanks to this, it is possible to lay non-linear channels, which is especially useful when space is tight or there are specific construction conditions.

The most effective use is on difficult soils, such as rocky, earthquake-prone or moving soils.

It should also be noted that it is resistant to temperature changes. The optimal parameters for installation are temperatures from – 20 to + 70°C.

Types of HDPE technical pipes for cables

The installation of any utilities related to electrical wiring requires impeccable implementation and strictly prescribed norms and rules. Typically, a technical HDPE pipe for a cable is selected exclusively for certain operating conditions. Failure to comply with requirements can have serious consequences.

Such main channels are divided into technical and electrical. These types differ in scope, purpose, as well as technical indicators.

Smooth HDPE technical pipes for cable

Smooth HDPE pipes for electrical installation work are manufactured using recycled materials, which significantly reduces production costs and also minimizes the harmful impact on environment. As a negative factor, this technology changes the characteristics and color of the final product, however, this has a slight effect on performance.

The scope of application of this type of pipe is quite specific - they are usually used for distributing communications along the walls or floors of rooms.

In practice, it looks something like this: a smooth electrical HDPE pipe is mounted in a wall groove or the base of a floor screed. Next, the ends of the main line are brought into place, after which the gate is closed. This creates a free channel for wires and communications. The final stage is drawing the power cores, cutting off excess edges, and installing control plugs that serve to seal the terminals.

Electrical pipes

The second common type is often used as underground pipeline, laying power and communication cables. The main application lies in the use of cables up to 1 kW.

The special, corrugated design allows the HDPE pipe to withstand heavy loads, which is an indispensable factor in such work.

Remarkable. Each shell has its own purpose - the outer shell is a reinforced shell and serves as a solid basis for maintaining the shape of the product. Interior, created from a different type of material. It is smooth and acts as a sliding layer to facilitate wire pulling.

The design also involves division into pipes with or without a probe. The probe itself is designed to make it easier to pull wires through the pipe; it usually looks like a steel core to which the wire is attached. Then, by pulling out the flock, it is replaced with a wire.

Important! Despite the significant resistance to mechanical loads, it is not recommended to lay SIP type wire in a HDPE pipe. This can cause a decrease in its service life and also lead to an accident.

Technical parameters of pipes

When manufacturing any type of hoses, strict compliance with all requirements and characteristics is a prerequisite. These requirements are clearly stated in specific documents. For example, GOST 16338 defines the requirements for the manufacture of low pressure with markings 271, 273, 276, 277, and 286. And GOST 16337 applies to products marked as - 10803-020, 15303-003, 15803-20, 16803-170 .

Additionally, violation of the integrity of layers, swelling, cracks or other material defects is not allowed.

Important! The appearance of roughness on the internal walls is not allowed. It is also not permissible to violate the uniformity of the outer layer, both on corrugated and on smooth HDPE pipes

Also, PE pipes are additionally divided according to their nominal pressure.

• Light electrical – 0.25 MPa.
• Medium light - 0.4 MPa.
• Average - 0.6 mPa.
• Heavy – 1 mPa.

Non-standard devices are manufactured individually according to customer requirements.

Marking of pipes for laying electrical cables

Manufacturers carefully monitor the need for markings. Such designations allow you to clearly identify belonging to any type of work, and also indicate specifications.

The first and important difference is the absence of a special color strip along the entire length. Typically, such markings are applied only to water pipes and. In addition, a quality mark and a manufacturer’s identifier must be applied, by which you can determine who produced the product and when.

There are also weight markings that are comparable to their strength.

• T - heavy;
• ST – moderate severity;
• OS – medium-light;
• SL – medium light;
• L – lungs.

Next, the number is applied generally accepted standard, the cross-section, thickness, number of wall layers and nominal pressure are indicated.

Usually an electric pipe technical HDPE PE for laying cables of types PE 63, 80 and 100 is marked as MRS6.3 and 8, 10.

How to choose pipes for cable laying

In order to correctly select HDPE pipes for electrical wiring, it is necessary to take into account generally accepted values, as well as the number of wires laid in them. To accurately determine the diameter of a technical HDPE pipe for cables of different sections, use the table:

Thus, you need to understand that the number of supposed cores increases the flow area of ​​the hose.

Methods and rules for laying HDPE pipes

Depending on the location, methods and rules for laying hoses made of low-pressure plastic vary radically. Therefore, it is necessary to consider each type separately.

Laying pipes inside buildings

At the stage of rough work, the wall is tapped and pipes are placed in it for pulling

Usually during installation hidden wiring, a smooth or corrugated pipe is taken for the cable - this is not prohibited by technical standards or GOSTs.

For wall mounting, it is most convenient to use smooth pipes; for flooring, corrugated ones.

The principle and sequence of actions are given below.

• The required location is marked.
• Fixation is carried out, in the wall with clamps, in the floor with metal brackets.
• The wire is pulled using a special probe or.
• Next, the floor screed is poured or the groove in the wall is closed.

Important! When installing the wiring, tension on the cables is not allowed; you need to give a little slack to allow shrinkage.

Methods of laying in the ground

The technology of underground laying of HDPE pipelines is very relevant in modern realities. This method allows you to reliably cover the veins and ensure a neat appearance of the building.

Separately, for laying cables in the ground, the methods described below are used.

Trenchless method of laying in the ground

This type requires special attention and painstakingness from builders. Due to the extreme labor intensity of the process, it is used extremely rarely, only when absolutely necessary.

The essence of the method is to drill a horizontal well through which communications will then be installed.

Before carrying out work, a special permit is obtained and the composition of the soil is analyzed.

Thus, in order to place a cable in a pipe underground, it is necessary to perform a number of mandatory actions. The basic operation sequence is shown below.

• A pilot well is being drilled. This is done with a thin drill to mark the main trajectory.
• The pilot hole is expanded to the required diameter.
• A PE sleeve is pulled into the passage.
• The cable is being installed.

The main disadvantage of the technology is the significant labor intensity and complexity of the process.

Laying outdoors in a trench

Cable layer

Laying electrical cables in a trench is the simplest in terms of technical feasibility. After selecting the necessary wiring and pipes for laying the HDPE pipeline underground, the following sequence of actions is performed.

• The site is being marked.
• A trench of suitable size is dug.
• The covers are being laid.
• A wire is pulled along the sleeve.
• Next, a sand layer about 15–20 cm thick is applied.
• The trench is completely buried.

Important! Immediately before installation, the wires must be carefully examined for damage to the integrity of the insulation.

Installation of cable under the road

When it comes to installation under a road section, it is necessary to coordinate the actions with local authorities.

There are two methods for this operation.

• Trenchless method.
• Trench method.

The first type is described above, so there is no need to go deeper.

Regarding the second type, there are several specific requirements, which are discussed below.

• The depth of the trench should not be less than 1 meter. This is due to the heavy load on the ground.
• Mandatory placement of indicator elements to prevent accidental breakage.
• The cores are located at a distance of at least 10 cm from each other.

Subtleties of laying technical pipes

Depends on individual characteristics method of laying polyethylene pipes. There are several subtleties that you need to know in advance.

• Installation work can be carried out at temperatures down to - 25℃.
• With the trench method, if the depth exceeds 2 meters, additional protection is provided in the form of a horizontal shaft, which is created from concrete or brick.
• Concreting of horizontal wiring is allowed.
• Mandatory sealing of connections underground.
• In cases where condensation is suspected, measures are taken to remove it.

Bottom line

Using quality materials, you can significantly extend the service life of communications. The use of HDPE profiles for this type of work significantly reduces the cost of resources and time for their maintenance, and also guarantees safety for others.

The video shows a simple and original way pulling the cable into the pipe using a vacuum cleaner.

For Cable is the undisputed leader in the field of protection of power wiring, communications and optical cables. Properties such as smooth internal walls, flexibility and long service life make HDPE pipe optimal solution in any large projects.

HDPE technical pipe for cable. The optimum ratio of price and quality.

Technical HDPE pipes perform exclusively protective functions without any special structural loads. Therefore, their production is made as cheap as possible through the use of recycled materials. However, this does not affect the quality at all: technical HDPE pipe for cable has proven its excellent reliability over decades of trouble-free service. Modern technologies ensure stability of the profile geometry along the entire length of the pipe, uniformity of wall thickness and density. The price of technical HDPE pipes is unattainable for analogues made from other materials.

Smooth technical HDPE pipe for cable - pulling without obstacles.

The HDPE material initially has a quality that is very useful for cable laying - smoothness. Due to the specific surface smoothness effect on the walls, the cable easily slides along the inner cavity of the pipe. No less convenience when pulling the cable is ensured by the absence of joints over a section of up to two hundred meters due to the length of the pipe. In fact, when a smooth technical HDPE pipe is used to protect the cable, any mechanical obstacle when pulling wires is eliminated.

HDPE technical pipes for laying cables in buildings and ground.

HDPE pipe has average resistance to ultraviolet radiation, which limits its outdoor use. To increase stability, black pigment is added to the composition, which extends service life in open spaces. But it is ideal for cabling indoors and indoors. HDPE pipe is used for trench laying and laying using the trenchless soil puncture method. As a protective sheath for the cable, it is laid in monoliths during the construction of buildings and structures. HDPE technical pipes for cable laying can withstand various manifestations of static and dynamic loads over a wide range, temperature fluctuations, and exposure to most acids, alkalis, and organic compounds.

HDPE technical pipe for electrical wiring cable.

The dielectric properties of low-density polyethylene are used for the manufacture of electrical protective covers. HDPE technical pipe for cable is used when laying power cables with low and high voltage. The electrical strength of HDPE is comparable to that of mica, the best natural dielectric. Additional protection in case of breakdown of the cable insulation is provided by the fire resistance of the electrical pipe.

Technical HDPE polyethylene pipes for laying communication cables.

There are special technical conditions for laying communication lines, including optical lines. They involve the use of technical HDPE pipes. Simplicity of installation, the possibility of hermetic joining, low cost, physical and chemical properties, durability of at least half a century determine the advantage of technical HDPE polyethylene pipe for cable laying when choosing the protective sheath of communication lines.

Main technical characteristics of HDPE pipes for cable laying.

The main technical characteristics of the HDPE pipe for cable laying are the parameters that fix dimensions, physical, chemical and operational properties.

Based on the outer diameter and wall thickness, the SDR coefficient is derived, which determines the type of pipe - light, medium-light, medium, heavy.

Important control indicators are the density and the degree of tensile stress that determine the flexibility and elasticity of the pipe. The thermal conductivity of the material is directly related to the flammability class. For HDPE technical pipes this is class B1 or B2 (difficult to ignite and normally flammable).

Resistance to aggressive environments, low specific gravity, wide temperature Range, ease of installation and long service life have determined the popularity of HDPE pipes for electrical work. Our company sells any batches of pipes in Moscow and in the regions. Our organization's catalog contains HDPE pipes of various types, diameters and lengths. Wholesale deliveries and retail sales are possible.

The use of pipes for laying cables in the ground allows additional protection of communications from external influences. The article will discuss the nuances of this process and the pipes used.

Pipes used, reasons for their popularity

One of the most popular options for laying wires is to place them in the ground. To implement this method, special pipes are used.

Reasons for popularity:

• When placed above ground, the cable may be damaged by a gust of wind, and the method described above does not have such a drawback.
• The underground wire is much more difficult to damage, and there is also protection from external weather conditions.
• Even if the wire is short-circuited, there will be no fire due to the protection.

There are five types of pipes designed for laying cables:

1. Polypropylene. This material It is characterized by plasticity and heat resistance. Such pipes are easy to give the desired shape.
2. Steel. Such pipes are not used for laying power lines in the ground. As a rule, a steel pipe for cable is used indoors, using corrugation.
3. Made from high and low pressure polyethylene. This type of pipe is lightweight, durable and has a long service life, and it also has corrosion protection.
4. Asbestos-cement. These are heavy pipes and contain asbestos, which is harmful to the human body.
5. PVC pipes.

The greatest demand at the moment is for pipes made of low-density polyethylene (abbreviated as HDPE). There are a huge number of varieties of such products: smooth-walled rigid, double-walled, corrugated pipes and so on.

Corrugated pipes for laying cables in the ground have high elasticity, as well as heavy weight due to the reinforcing mesh inside. In addition to corrugation, double-wall pipes contain a layer of HDPE.

One of the main advantages of laying the cable inside such a product is that it will be completely hidden from the environment. The pipes are durable; the manufacturer claims that they can last up to 50 years. In reality, this period turns out to be higher.

Features of HDPE pipes

Features of using HDPE pipes:

• HDPE pipes have very simple installation;
• Corrugated pipes are suitable for laying electrical network cables;
• If the installation is done correctly, the pipes form a tight connection;
• HDPE pipes eventually return to their original state linear size. The use of a probe allows you to simplify cable pulling.
• HDPE pipes have a high elasticity index (more details: " "). Therefore, they can be used all year round; changes in soil temperature will not affect them.

For laying signal or power cables, double-wall corrugated pipes are optimal. Their use allows you to protect the line from any external influences.

There are two different types of pipes in the manufacture of which low-density polyethylene was used: products that comply with the GOST standard, and other products from the secondary market. The second option is different worst quality. You can choose it if your budget is limited.

Advantages of low pressure polyethylene pipes:

• Long service life (manufacturers claim 50 years);
• No welding is required to connect individual pipes;
• Lightweight design;
• Over time, the product does not lose its performance characteristics;
• For HDPE pipes external factors do not have a negative impact;
• To lay cables in such pipes, no additional grounding is required;
• Wide range of operating temperatures - from -25 o C to +70 o C;
• HDPE pipes do not have a negative impact on the environment, as they do not emit toxic waste or condensate;
• Pipes made of low-pressure polyethylene are easily deformed; there is no need to use additional fasteners and connecting parts to lay the pipeline. But you should understand that if the pipe is strongly bent, the cable will not fit into it.

Types of protective pipes

What are HDPE pipes used for? They are designed to protect the cable from various influences. The soil contains chemical compounds that can harm it. Also dangerous for the cable are mechanical damage or loads and stray current.

HDPE products are divided into electrical and purely technical according to their intended purpose. The first category includes reinforced corrugated or double pipes. They have a higher degree of protection. Purely technical pipes are simpler, they are single-layer, there is no additional protection. But their price will be lower.

Corrugated pipes for laying wires are used for protection telephone lines, electricity networks and so on. It doesn't matter if it's variable or D.C. goes along the cable. But the voltage should not exceed 1 kV.

Information about the technical characteristics of pipes indicates: colors, markings, dimensions, wall thickness, number of layers, compliance with GOST. Usually for this type of product the following pattern applies: the wall thickness directly depends on the diameter of the pipe. The larger the first parameter, the larger the second.

In pipes, wall thickness can vary greatly. The minimum value of this parameter is two millimeters. In this case, the pipe diameter is in the range from 15 to 50 mm. And the maximum value is up to 3 cm. Then the pipe diameter reaches 25 cm.

Classification of pipes according to maximum pressure:

• Light (permissible pressure - 0.25 MPa);
• Medium-light (permissible pressure - 0.4 MPa);
• Medium (permissible pressure - 0.6 MPa);
• Heavy (permissible pressure - 1 MPa).

The cable marking corresponds to its performance characteristics. You can find it on the “sleeve”. This indicates the weight of the product.

Pipe markings:

• “L” - light;
• "SL" - medium-light;
• "C" - average;
• "OS" - medium-light;
• "ST" - medium-heavy;
• "T" - heavy.

In addition to information about the weight, which directly depends on the strength of the product, they also indicate the diameter of the pipe and the wall thickness. This necessary information for cable laying. For example, if you plan to lay a cable underground with a cross-section of up to 2 square meters. mm, then the radius of the pipe should be in the range from 8 to 12 mm.

Several cables can be laid simultaneously inside the pipe (maximum 4 pieces). If its cross section is from 6 to 8 square meters. mm, then you need to buy a pipe with a diameter in the range from 20 to 40 mm.

You need to choose a pipe taking into account the number of wires in it. For example, if you plan to install three cables with a cross-sectional area of ​​10 sq. mm, then a pipe of the same diameter as for two cables with a cross-section of 25 square meters is suitable. mm.

Let's move on to thicker wires. For cables with a cross-section from 35 to 70 sq. mm, the optimal pipe diameter will be from 40 to 50 millimeters. It is worth considering that as the lumen width increases, the sleeve size decreases.

Another significant characteristic of a pipe that determines its quality is the SDR indicator. To calculate it you need to divide external diameter products for wall thickness. The higher the value of this indicator, the lower the reliability of the pipe. Therefore, you cannot choose products with a wall that is too thin relative to its diameter. After all, it will fail faster due to low strength.

Laying technical hoses according to general principle similar to laying electrical hoses. The only differences here are the purpose and the corresponding labeling. Technical pipes made of low-density polyethylene are intended for laying non-electrical communications in the ground. For example, they can be used for heating pipes or sewerage.

For the production of technical HDPE pipes, recycled raw materials from processing are used. For example, from products marked “PE 32”, “PE 64”, “PE 80” and “PE 100”. The diameter of such pipes ranges from 2 to 50 centimeters.

Such pipes can be used not only for draining technical liquids or sewage water. They are also suitable for the implementation of drainage and reclamation systems, installation of free-flow water supply and similar communications.

Technical pipes for cables in the ground cannot be bent or deformed, unlike corrugated products. Therefore, to create turns, connecting fittings are used: couplings, fittings and adapters. For absolute sealing, butt welding or the use of compression fittings is possible.

You can find out detailed information about the HDPE pipe from the markings. Using it, you can determine the technical characteristics of the product.

The principle of laying cables underground

When laying plastic pipe To lay a cable in the ground, you must follow the following steps:

1. The first step is to check the HDPE pipes. They must not be damaged in any way. The same applies to the pulled cable.
2. Markings must be applied to the pipe laying areas.
3. Now you can proceed to digging a recess of the required dimensions for laying the cable.
4. Then comes the laying of the pipe itself.
5. And now the cable is being pulled through the pipe. It should not be stretched inside.
6. The entire structure must be buried with a layer of sand of 10 centimeters and a layer of soil of 15 centimeters.
7. Signaling tape can be laid on top of the embankment. You can skip this step. The tape will act as a marking.

If it fits power cable, then it is best not to use adapters and couplings at all. When this is not possible, their number should be kept to a minimum. The fact is that adapters and couplings will violate the tightness of the pipeline, which is so necessary for the power cable.

In those places where pipes emerge from the soil and enter the building, special fittings should be installed. What about minimum cross-section cable for placement underground? It's best to take not the best ones thin wires. For example, a cable with a cross-section of 4 mm or more is suitable.

If the above method of laying pipes with cable is not possible, then horizontal laying is used. To implement it, drilling is required. Among the advantages this method one can highlight the lack of need for earthworks. There is no need to dig a trench for communications.

To begin with, perform engineering survey. This is the name of work to study the soil characteristics in the area where construction is planned. Drilling cannot be carried out until the relevant documents have been received.

When you have the permit in hand, you can move on to the main part. It all starts with drilling a pilot well. A special drill with a radiating head is used, which easily destroys the soil. When it encounters a void, it fills with liquid. It is designed to cool the drill, and also prevents the collapse of the earth.

At the next stage, the well is expanded. To do this, put an attachment called a rimmer on the drill. Then you can proceed to tightening the pipe and wire into the well. A drilling rig is also used for this. This is the most critical stage of the work, and it is also the final one.

Laying cable in a pipe under the road

In some situations it is necessary to lay the cable under the road. This is a rather difficult method, which is used if it is impossible to dig a trench. A specialized organization that has the necessary equipment will be able to handle the drilling.

When choosing pipes, it is necessary to take into account the load that will be placed on them. If you plan to lay the cable under the road, near houses or industrial facilities, then it is best to choose the most durable products.

You must fully follow the installation rules. In this case, the cable will be maximally protected from environmental influences, and the HDPE pipe will not wear out prematurely.

During the installation of communication networks, HDPE cable pipe is very often used as a protective sheath. It is often used when laying power lines. HDPE pipe very reliably protects the cable from the influence of stray currents, aggressive soil influence and mechanical damage.

Cable installation technology depends on the location and purpose of utility networks.

Application of HDPE pipes for installation of communications For laying power lines and other engineering communications they use different types HDPE pipes. They differ design features

1. and technical parameters: When laying electric cable
2. in a brick wall or floor screed, a smooth black HDPE pipe is used. Products with corrugated outside used for hidden, semi-hidden and open method for telephone, electrical, computer and television networks operating from direct or alternating current electrical voltage, the value of which is less than 1000 Volts. Electrical equipment
3. This type can function indoors and outdoors.

To lay cables in the ground, HDPE pipes with a corrugated surface are used, which are characterized by high strength and elasticity, as well as ease of installation and the ability to restore the lost shape.

Depending on the product specification, it may be equipped with a probe. The probe is a special design designed for pulling a cable inside a pipe. Using it, you can reduce the time for laying communications and power networks.

In the absence of a probe, the cable is pulled using special reusable equipment. In this case, the labor intensity of the process increases slightly, and there is also a need to purchase technical equipment. In this case, HDPE pipes for cables that do not have a pull can be used several times. This is especially true with frequent repairs of communication systems. Among the companies producing HDPE pipes for laying cables, DKS is now the most popular. This manufacturer produces"Octopus", which are used to install hidden wiring inside a building. In addition, DKS produces various boxes and accessories that allow the installation of communications in full compliance with established rules.

Advantages of HDPE pipes

Compared to metal protective casings, HDPE cable pipe will cost the owner much less. This is evidenced by the fact that for laying power lines and other communications it is not necessary to use products manufactured in accordance with the requirements state standard. For these purposes, production from recycled materials is quite acceptable. Technical HDPE pipe is made from industrial waste mixed with various polyethylene additives. It changes a little performance and color of the product, but makes it possible to significantly reduce manufacturing costs, thereby reducing the cost.

In addition, communication pipes made of low-density polyethylene have the following advantages:

• Individual sections of the structure can be connected without the use of welding equipment;
• The service life of the product under normal conditions exceeds 50 years;
• Pipes are lightweight compared to metal protective casings;
• They have a high electrical insulation rate, so they do not require grounding;
• Do not lose their quality due to aggressive environments and corrosion;
• They retain their characteristics even in aggressive operating conditions and can withstand temperature changes from -25 to +70 degrees Celsius;
• They do not release condensation onto the surface and do not produce toxic substances.

The cable inside the HDPE pipe can be laid along any desired path without the use of connecting elements, because the polymer bends very well. It is especially easy to change the design of small diameter products. At the same time, you should not bend the HDPE pipes very much, because this may cause a crease and it will not be possible to stretch the cable.

Electrical cable laying technologies

The technical features of installing HDPE pipes depend on the conditions of its use and the location of the cable. These characteristics influence the list of equipment used and required design elements.

• Installation in fencing structures

Indoor electrical cable, closed by pipe HDPE is laid using the following technology:

1. The location of the cable is outlined;
2. The pipe is fixed, and it can be attached to the floor using metal brackets, and to the walls and ceiling with special fastening elements with a latch;
3. The cable is pulled so that it is positioned freely, without tension;
4. The structure on the floor is filled with concrete screed, and in the ceiling or wall it is sealed with plaster or other materials, depending on the size of the protective casing.

Using HDPE pipe you can reduce the length electrical wiring and re-stretch the cable and renovation work without the possibility of damage to the surface of walls and ceilings.

When installing communications inside a building, you can use different kinds connecting parts for fastening individual elements of the protective case: couplings, bends and other components. However, elements with a corrugated surface are most in demand for turning in places where the structure passes through the floor slab or transition between different planes. In this case, a polyethylene pipe can be bent even at a right angle, which cannot be done without using additional elements designs. According to current instructions for installing hidden electrical wiring located inside walls or floors made of non-combustible materials, the use of corrugated and smooth HDPE pipes is allowed.

• Laying HDPE pipes in the ground

This technology is in great demand when laying communications in private homes and country houses. Before starting work, you need to carefully inspect the cable and check the integrity of the protective casing. If the shell is damaged protective function polyethylene pipes will lose its meaning.

1. Make markings and dig a trench of the required depth;
2. A polyethylene pipe will be placed in the hole the right size with or without broaching;
3. The cable is pulled and laid in such a way that it is positioned freely;
4. The pipe is covered with a layer of sand approximately 10 centimeters thick, and then with earth to a depth of 15 centimeters.

To quickly find the location of the cable, you can lay a special signal tape over it.

When using HDPE pipes to lay power networks underground, it is advisable not to use couplings and other connecting elements, because this may worsen the sealing of the system. Do not forget that the use of fittings when leading cables into a building is mandatory. To lay a cable on a straight section, it is best to use solid parts with a cross-sectional diameter of more than 4 millimeters. If the section is too long, then to tighten the electrical cable you need to use an elastic metal wire or a special nylon broach. Initially, they are launched into the pipe, and then the tied cable is tightened.

• Cable laying without trench

To lay electrical cables located in places with difficult accessibility, trenchless installation technology is used. Most often it is used utility services, because it is performed using special equipment and complex technology. The essence of this method of laying cables is horizontal drilling, which allows you to lay communications underground without disturbing the surface layer of the soil. Initially, the composition of the soil is studied, after which it is necessary to obtain permission to carry out such work. Afterwards, the installation of the cable in the HDPE pipe begins, which includes the following steps:

1. Drilling a pilot well. The soil is punctured using a drill head that has built-in radiation and a bevel in the front part. As it enters the ground, a mixture is supplied through special holes to fill the well. It reduces the likelihood of collapse and cools hot equipment.
2. The well is expanded using a rimmer, which replaces the drill head.
3. Laying HDPE pipes with cable inside. The structure is pulled into the well using a drilling rig.

The main disadvantage of horizontal directional drilling technology is the complexity of the process, therefore, when carrying out such work, it is necessary to enter into an agreement with specialized organizations that have staff and required equipment for carrying out such work.

Laying the cable with the protection of low-pressure polyethylene pipes ensures reliable protection of the communication system for a long time, but do not forget about the installation instructions, because even a little negligence can ruin all the work.

HDPE pipe for laying cables in the ground

When choosing a product, you must pay attention to two characteristics of the pipe: the diameter of the pipe and its type.

Diameter internal section pipes must be at least one and a half times the outer diameter for cables with stranded conductors and twice the outer diameter for cables with single-wire conductors.

In each of these cases, for cables up to 10 kV, pipes with an internal diameter of less than 50 millimeters for a length of up to 5 meters and less than 100 millimeters for a longer structure cannot be used. For example, if you need to lay a cable with a small cross-section over a distance of 6 meters, then you need to use pipes with a diameter of more than 100 millimeters. When designing networks of particular importance, it is recommended to use double-walled HDPE pipes with a diameter of 110 millimeters, even in cases where some sections are less than 5 meters in length. Even though this leads to unnecessary costs, since pipes with smaller diameter and their installation is cheaper, this gives confidence in the reliability and durability of the system.