HDPE corrugated pipe for laying in the ground. Laying cables in the ground in pipes: basic rules of work

Cable routes of any scale need protection from external factors, accidental mechanical damage, which can lead to a violation of the integrity of the sheath of conductive conductors. Previously applied metal pipes, concrete, brick protection, methods of protection that are quite expensive to manufacture. The volume of work in the construction of a shell from them is very large. Accordingly, the cost of arranging such communications is prohibitively high. Alternative - HDPE pipe for cable laying, which has high strength and long service life.

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

Cable laying 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 ultra-high costs, while the quality remains high. The service life of HDPE pipes for cable laying exceeds half a century. In such a pipeline, it is very easy to replace broken segments of cable routes.

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

Most of the 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. The purchase of 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 products.

HDPE technical pipes for cable laying indoors.

Our company produces HDPE technical pipes for cable laying. They allow easy installation of electrical wiring indoors. In laid in a floor screed, concrete pouring or brick wall Smooth polyethylene pipe can quickly insert electrical wiring. In the event of its failure during operation, the replacement will not present any particular difficulties.

HDPE pipe for laying cables 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. A HDPE pipe placed in a trench, with a cable installed in it, can immediately be covered with soil. This method significantly reduces costs when using special equipment.

Electrotechnical pipe HDPE PE for cable laying. Sale by segments.

The production lines of our company allow us to produce electrical PE pipes of various shapes and diameters, depending on the customer's requirements. The material used in their manufacture is low-pressure polyethylene high density... Electrotechnical HDPE Pipes over 75 mm in diameter have high rigidity and are produced in lengths of 12 meters. The buyer can order pipes for laying the cable 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 from 20 and more. The catalog contains their main types. Starting from a section of 75 mm, products are produced in 12-meter sections. The customer can choose a standard diameter of HDPE pipe for cable laying or order individual sizes polyethylene pipes up to 225 mm.

HDPE pipe 20 mm for cable laying in small projects.

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

HDPE pipes 160 mm for cable laying in large communications.

In cases where cable communications are being installed in residential areas, on large industrial enterprises where a significant number of separate 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 the drainage of sewage.

Technical polyethylene pipes HDPE for cable laying wholesale and retail.

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

Polyethylene pipes are the best option for laying cables in the ground, since they have excellent technical characteristics, which can be considered advantages. Namely:

1. The products have a low specific gravity, which allows you to easily deliver and install HDPE 160 pipes for cable laying without additional equipment, simple connection with couplings;
2. Polyethylene pipes are not subject to decay and corrosion, unlike metal products;
3. The pipes have excellent insulating properties;
4. High flexibility. Due to the fact that HDPE technical pipes bend well, they can be used when installing a system with many turns, without fear of damaging the material.

Smooth technical pipe HDPE for cable.

Such pipes are most often used for laying cables in a pipe. Pipe diameters from 25 to 225 mm

Double-wall pipes HDPE / LDPE for cable.

Application - for the protection of low and high voltage cables when laying in the ground, water, pipes, blocks, on bridges and overpasses. For the protection of communications - pipelines, gas pipelines, electrical networks, telephone, television and computer communication lines.
Material: outer layer - HDPE, inner - LDPE.
Color classification: red - for electrical cables, blue - for communications and telecommunications systems, black - for cable lines general purpose

The company "Plast Torg" presents the entire range of polyethylene pipes suitable for various areas of use. Thanks to the well-functioning logistics and warehouse program, we can guarantee the exact fulfillment of the delivery time of products. All products are certified and accompanied by permits.

In the face of Plast Torg you will find a reliable and trusted supplier.

Check out the product catalog on the company's website, you will find the names of all models and current prices. If you have any questions, please contact the manager.

A pipe for laying a cable in the ground is one-stop solution for many construction and engineering tasks, such as laying an electrical cable in the bowels, whether it be the Internet, networks, signaling systems or any other.

This polyethylene product avoids the laying of overhead power grids in areas with frequent stormy and gusty winds.

Laying cables in the ground is one of the most popular ways to lay wires.

That is why the range of specially designed pipes for this is not limited to one or two variants.

Why is this high-cost one so popular at first glance?

Reasons for using pipes for laying cables in the ground:

• With the aerial method of placing the cable, any strong gust of wind can violate its integrity, which will not happen in the bowels of the earth.
• When icing occurs during the winter season, "breakouts" often occur.
  In this case, there is protection against vandals (it is much easier to cut off part of the cable hanging in the air than to dig it out of the ground).
• The damage caused by the downtime of the plant, the enterprise, can be significantly higher than the savings during installation.
• If a short circuit occurs, there will still be no fire.

What pipes are used for cable laying:

• Steel (not suitable for power lines and does not protect the line if the integrity is violated).
• Asbestos-cement (heavy, harmful to human health due to the content of asbestos).
• High or low pressure polyethylene (strong, durable and lightweight pipes that are not subject to any decay or corrosion).
• Propylene (made of heat-resistant and plastic propylene polymer).
  PVC (polyvinyl chloride).

HDPE (low pressure polyethylene) pipes have become very popular in the past few years. They are light or heavy corrugated, smooth-walled rigid, halogen-free, double-walled. Each of the options performs its own functions.

Corrugated corrugations have increased elasticity, and when using a reinforcing mesh inside their structure, they become heavy. Hence they got their name. Double (double-walled) shells include not only corrugation, but also one more layer - high-pressure polyethylene.

A feature of this type of building material is the fact that the value of the ambient temperature when laying such pipes does not matter. They are also lightweight and easy to install, and their service life is about fifty years in theory, in practice even longer.

There are several types of pipes suitable for laying cables in the ground. Among them: asbestos, PVC, HDPE, double. For different types wiring uses pipes that differ from each other in quality.

The use of HDPE pipes and their features

Why is it cheaper? The fact is that the material for the production of this product is waste from other industries with the addition of the necessary synthetic additives.

Among the advantages of HDPE pipes are the following:

• Long service life (nominally - 50 years).
• The use of a welding machine is not required to connect sections of the cable route.
• Low weight.
• When used, no additional grounding is required.
• Pipes do not deteriorate under the influence environment, its factors, as well as the time factor.
• Withstand temperatures ranging from minus twenty-five to plus seventy degrees Celsius.
• HDPE pipes do not emit toxic and other harmful substances, and also do not emit condensation on the surface.
• The polymer, which is the main component of the product under consideration, bends easily in any direction, therefore, does not require additional fasteners and connecting parts. However, you should not bend the pipes too much - the cable will not work.

HDPE pipes are widely used in the modern technological Internet world. With the right approach to the process and correct laying, an excellent result can be achieved: the repair of the object will not be needed for a very long time or not at all.

Technical parameters, marking and types of protective pipes

What are HDPE pipes protected from?

From mechanical damage, stray current, chemical action of the soil and its components.

For the purpose of use, electrotechnical and purely technical HDPE pipes are distinguished.

The first type includes additionally protected corrugated or double pipes ( distinctive feature corrugated product is smooth inner).

For technical purposes, simple single-layer HDPE products are used that do not provide additional protection.

Corrugated pipes can be suitable for laying telephone, television, computer, electric cables in the ground.

It is important that the current flowing through the said wire be alternating or constant, but not more than 1 kV. In turn, corrugated pipes are divided into two subspecies: with or without a probe.

If the first one was chosen for the work, it will pass quickly and without problems. When buying a product without a pulling mechanism, you will also have to purchase a reusable cable pulling mechanism.

The technical parameters of pipes include concepts such as pipe thickness, wall thickness, color, compliance with GOST, the presence of marking, the number of layers. Typically, the following rule applies to this product. How larger diameter pipes, the thicker its walls.

The latter parameter can vary over a wide range. The minimum wall thickness is two millimeters. In this case, the diameter of the pipe itself is from 16 to 50 mm. The maximum wall thickness is almost three centimeters. The pipe diameter is twenty to twenty five centimeters.

Wear-resistant HDPE pipes withstand pressures from twenty to thirty-eight Megapascals, and the linear expansion coefficient is one hundred and forty Pascals. But not all underground cable laying works require such strong and protected products.

Therefore, manufacturers and on sale in stores have a whole line of different pipes:

• Lungs - withstand pressure up to a quarter of a Megapascal
• Medium-light - up to four tenths
• Average - up to six tenths
• Heavy - up to one Megapascal

Each "sleeve" for cable routing has its corresponding technical specifications marking. These are symbols showing which parameters a particular product corresponds to.

In addition, the application of markings on pipes allows you to control the compliance of the declared quality level with that of a particular pipe.

Product classes with appropriate markings:

• "T" - heavy pipe
• "ST" - medium-heavy pipe
• "OS" - medium lightweight pipe
• "C" - middle pipe (by weight)
• "SL" - medium-light pipe
• "L" - light pipe

In addition to information about the weight, which is directly proportional to the strength, it and the thickness of the wall are also indicated. To protect a thin cable underground (cross-sectional area one and a half to two square millimeters), a pipe with a radius of eight to twelve millimeters is required.

Moreover, the number of wires can vary from one to four pieces. If the cable has a cross-section of six to sixteen square millimeters, you will need a HDPE pipe with a diameter of twenty to forty millimeters, respectively.

The final choice should be based on the calculation of how many pieces of wires will be enclosed in low pressure polyethylene. For example, for three cables, each with a cross-sectional area of ​​ten square millimeters, you need to select the same pipe as for two cables with a cross-sectional area of ​​twenty-five millimeters.

What about thicker wires? If the cable in the cross section contains from thirty-five to seventy square millimeters, then more pipes will be needed. Namely: from 40 to 50 mm in diameter.

If the pipe is not corrugated, it cannot bend and is sold in limited length: for a diameter of up to nine centimeters, the length of the product can be one hundred or two hundred meters.

With an increase in the width of the lumen, the polyethylene sleeve decreases - for example, twelve meters each.

Another important criterion for assessing the quality of a pipe is an indicator called SDR. It is calculated by mathematically dividing the outer diameter by the wall thickness. With an increase in this special indicator, the overall strength of the pipe becomes lower.

The installation of technical protective sleeves is a process similar to the installation of electrical sleeves. The differences are only in the very purpose and labeling. HDPE pipes of this type are used for laying underground networks that are not electrical. For example, a heat pipe, sewerage.

Waste from other industries is used for the production of such pipes. For example, from brands "PE" thirty-second, sixtieth and eightieth, as well as the hundredth. The radius of the product can vary from one centimeter to twenty-five.

In addition to technical and sewage water such polyethylene products are used for non-pressure water supply systems, in storm, drainage systems, for land reclamation, irrigation of crops.

Installation is carried out using fittings, adapters and couplings, since they cannot bend like corrugated pipes. In some cases, when it is necessary to ensure one hundred percent sealing, a special butt welding or compression fitting is used.

The quality and operating parameters of HDPE pipes are judged by the marking, which shows all the important technical features products.

More information about corrugated pipe can be seen in the video:

How cable is laid underground

To lay a cable in a special pipe underground, you must follow a clear sequence of such actions:

• Inspection of the HDPE product for damage. The same should be done with the cable itself.
• Marking the places where the pipe should be laid.
• trenches of the required depth for the cable (at least twenty-five centimeters).
• Pipe laying.
• Pulling the cable (it should eventually lie inside without tension).
• Filling the structure with a ten-centimeter layer of sand and a fifteen-centimeter layer of soil or earth.
• Laying the signal tape around the entire perimeter of the cable laying (optional).

When performing these works, you need to remember that when laying the power cable, it is better to avoid the use of adapters, couplings altogether, or use them only when absolutely necessary. Of this simple rule must be adhered to to ensure the safest possible seal.

In places where the structure exits the ground and enters the building, special fittings must be used. With regard to the minimum cable cross-section for underground installation, it is recommended to use not the thinnest ones. For example, a wire with a cross-section of four millimeters or more is suitable.

A pipe for laying a cable in the ground under the road, near buildings, industrial facilities must take into account all the maximum load that can be placed on it from above.

But this is not the only requirement for its successful and long-term operation, as well as for the operation of the cable in it.

It is also necessary to strictly follow the installation rules.

Equipping country cottage area, the owners have to solve many operational issues associated with the new construction. To live comfortably in country house, you will need to think about high-quality water supply systems, sewerage systems, as well as electricity. Laying cables in the ground in pipes is necessary to provide power to lighting fixtures, heaters and other household appliances. To independently perform this work, it is necessary to study the technology of its implementation. This will create a high-quality and durable system.

General requirements for work

Not every site owner is satisfied with the air conduction of the cable system to the house. Gaining more and more momentum underground option laying of power communications. They enter the house through the basement. Therefore, this type of work is performed even at the stage of laying the foundation.

A plan for such an electrification is being developed even before construction begins. All cable branches are thought over. At this stage, the condition of the soil, the type of climatic zone and other aspects of the safety of the operation of the system are taken into account.

The laying of cables in the ground in pipes must be carried out taking into account existing requirements and regulations. When carrying out such work, it is necessary to take into account the norms of SNiP and PUE, as well as GOST. Carrying out all the necessary installation operations, be sure to comply with labor safety rules.

Types of materials

Laying cables in the ground in pipes (PUE, SNiP clearly regulate this process) requires a choice the right materials... First and foremost, they must be safe. But their cost should also be acceptable. Today there are communications that do not need to be carried through pipes. These are armored cables. However, their cost is very high. Therefore, the trench installation method involves the use of a cheaper cable in special pipes.

A cable that runs underground must be marked with a self-supporting insulated wire. This variety allows you to apply all existing standards. However, it must be installed in a trench manner in a pipe. The track can be metal or plastic.

Made of plastic. They are quite sturdy and have smooth surface... The DKC type corrugated pipe is allowed to be used only for internal work, for carrying out communications under a layer of plaster.

Method advantages

Laying cables in the ground in HDPE pipes, metal or metal-plastic varieties has a number of advantages. This allows you to protect the wire from adverse weather conditions, mechanical damage.

If you need to replace the conductor once, you can easily get the old cable and run a new one along the existing route. This technique allows you to comply with fire safety rules. This is especially important in wooden houses... A pipe designed for trench installation prevents sparks and overheating of surrounding materials.

The advantage of this system is additional cable protection. Thanks to the pipe, it will not be damaged by rodents, microorganisms. If the conductor is buried in the ground without such protection, moles can gnaw through it.

Trench arrangement

The laying of cables in the ground in pipes (photo is presented below) must meet a number of mandatory requirements. The depth of the conductor in the ground must be at least 70 cm. This indicator varies depending on the climatic zone.

The route must not be laid under the foundation. The cable should run no closer than 60 cm from it. The width of the ditch is selected in accordance with the number of conductors passing along the route. They should be located no closer than 10 cm from each other.

The trench is covered with sand and compacted to a level of 15 cm. Before arranging the route, it is necessary to consider the site plan. It is not allowed that pipes with electrical conductors pass closer than 1 m from gas or 2 m from water supply lines.

If brick is used to strengthen the transmission line (with significant soil subsidence), it should not be hollow. On top of the route, it is necessary to lay a tape with an inscription about the passage of a power cable here. Further, a layer of sand and earth with a slide is again poured.

Features of a bookmark in plastic pipes

Laying cables in the ground in HDPE pipes has a number of features. They must be studied before carrying out work. Initially, you need to complete a drawing of the route. The pipe must be fastened every 60-80 cm. For this, special brackets or clips are used.

To pull the cable through the pipe, use special broaches or metal wire. All elements of the track are connected using a special soldering iron. The cable should be connected inside using special couplings.

If the track is vertical, it is made with a slope. This will prevent condensation from collecting in it.

Features of a bookmark in metal pipes

If you need to pull the conductor in wooden building, bath, it is better to give preference to This strong product. It can be galvanized or iron.

It should be noted that buried cables in DKC pipes are not permitted. They are used especially for indoor cable laying. Welding or threaded fittings can be used to connect the metal elements of the route.

When arranging such a system, grounding must be performed. The slope must be towards the pipes and the joints must be painted to avoid corrosion. For interior work, it is better not to use such structures. When the floor is poured with concrete, the painted surfaces will not adhere well to it.

Connection rules

The laying of the cable in pipes in the ground, the norms of which are regulated by the PUE and GOST, must be carried out responsibly. Connections in pipes are not allowed. This is done only in the most extreme cases and at the same time they use special couplings.

Better that such field connections were carried out in junction boxes. This is required

The track must not be bent more than 90 degrees. Otherwise, it will be impossible to replace the old conductor. The pipe joints must be additionally sealed. The inlet must be sealed.

The wire size must be selected according to the system load. Better to give preference to copper cable. Aluminum conductors are only applicable for interior work.

The correct laying of cables in the ground in pipes is quite simple on your own. However, you should take into account the advice of experts. They recommend using a track that is 3 times wider than the conductor itself.

If the winters in this climatic zone are very harsh, the soil may freeze by more than 70 cm. To prevent the pipes from deformed, they should be carefully fixed. But it's better if the track goes even deeper.

When developing a plan, avoid trenching under car parks, playgrounds, or garden paths.

Having familiarized yourself with such technology as laying cables in the ground in pipes, you can do this work yourself. Observing all safety requirements, you can create a high-quality, durable track. Its operation will be safe.

Underground routes of electric cables and communication lines are subject to various threats - flooding, mechanical destruction during ground movements or pressure on the soil surface, the effect of stray currents. Although most cables are covered with durable layers of insulation and braid, additional protection is needed. In recent decades, HDPE pipes for cable have been used for this purpose, which you can purchase with delivery to Moscow by placing an order on the website or by phone.

Types of HDPE pipes for cable

From the entire range of tubular products, almost all articles can be used for cable laying. But two types meet the requirements the most - technical and electrical pipes. The first are smooth-walled black products, which are successfully used for free-flow cold water pipelines. In the case of electrical installation technical pipe HDPE for cable laying is used if the lines pass through concrete screed or a brick wall. They are also very convenient for the installation of underground lines by the puncture method (HDD). In this case, the pipe is pulled into an inclined or horizontal well with a cable installed in it. The technology is quite complex and requires special equipment and highly qualified personnel. Smooth-walled rigid HDPE pipe with low SDR (up to 9) is ideal for cable laying at great depths - it withstands significant ground pressure and protects the cable from possible breaks.

Special pipes for electrical purposes

In most cases, for underground and surface mounting of highways, an electrotechnical HDPE pipe is used for cable laying. It is two-layer - smooth inner (LDPE) and corrugated outer (HDPE). The inner one has minimal resistance to cable pulling. For this, a special steel or polypropylene cable is used - a probe. Standard HDPE cable conduit can be supplied with or without an internal probe. A HDPE pipe is produced for electrical purposes in accordance with GOST 16338 (marking 277, 276, 286, 273 and 271) or GOST 16337 you can recognize them by other markings, for example 0803-020. According to the standard, the product is divided into several types: heavy and light corrugated; double-walled; heavy smooth; halogen-free. They are distinguished, first of all, by their ability to withstand external pressure, which determines the possibility of installation at different depths. Lungs are designed for a pressure of no more than 0.25 MPa, medium - 0.4 - 0.6 MPa, heavy - up to 1 MPa. When ordering non-standard items, the allowable pressure limit is also selected. The mass of the pipe and its strength directly depend on the SDR indicator. For cable lines, products with SDR from 7.4 to 26 are used, depending on the operating conditions of the future trunk and the method of pulling. For the HDD method, you can take only products with a ratio equal to 7.4 - 11. Also, shells for various purposes differ in color: red - for high-voltage lines; blue - communications and telecommunications; black - general purpose.

Plain HDPE pipes for cables

Smooth HDPE pipes for cables are black, they are produced with a single-layer wall and are not reinforced. Some types of double-layer are reinforced, they are designed to operate in difficult conditions. The company "Promtekhkomplekt" offers a full range of electrical and water pipes made of polyethylene. You can buy HDPE pipe for cable in Moscow both in coils and in sections of the required length with delivery to the destination. We have the lowest price for HDPE pipes for cables - we cooperate with the five largest factories for the production of this type of product and receive goods at a special dealer cost. This allows not only to keep prices acceptable to the customer, but also to offer discounts and bonuses for regular partners and wholesale buyers.