Solder the polypropylene corner without an iron. Connecting polypropylene pipes - different technologies for your convenience. Using butt welding

Poly propylene pipes have long gained great popularity among consumers. Unlike metal options, polypropylene pipes are much lighter in weight, and methods for connecting this type of communications do not require skills in working with a welding machine and metal-cutting tools, as is the case with iron pipes.

Peculiarities

As with any other type of plumbing, installation polypropylene pipes has a number of features.

• When butt welding, the walls should not be thicker than 4 mm. The joining surfaces must be trimmed, and strict parallelism of the connected elements must be maintained. When docking, it is recommended to use special guides.
• Since threading cannot be done on a polypropylene pipe, threaded fittings are used for threaded connections, and a sealant and Teflon tape are used to seal the connection.
• When welding polypropylene pipes, it is necessary to ventilate the room. When the temperature in the room is below freezing, this type of work cannot be carried out, since joining when the elements are insufficiently heated does not guarantee the tightness of the connection.

• At welding work with polypropylene pipes, you need to heat the soldering iron to the desired temperature and place it on the stand. When working, you should follow safety precautions, as we're talking about about a high temperature of 260 C.

To ensure a high-quality connection of elements, it is necessary to maintain the melting time required for a certain pipe diameter.

Below are the diameters and time intervals.

• 16 mm – 5 sec;
• 20 mm – 6 sec;
• 25 mm – 7 sec;
• 32 mm – 8 sec;
• 40 mm – 12 sec;
• 50 mm – 24 sec;
• 63 mm – 40 sec.

What is necessary?

To install polypropylene pipes you will need special tools for cutting and joining elements.

The list of tools includes devices such as:

• pipe cutter;
• welding machine;
• stripping;
• glue gun;
• marker for marking;
• connecting part and tape measure.

Pipe cutter for polypropylene pipes, it is better to use a professional one - such a tool guarantees reliability and a perfectly even cut, it will not allow the formation of burrs on the cut surface. When choosing a pipe cutter, you should consider this important parameter, as the minimum and maximum pipe diameter. You should choose a tool with a blade made of alloy steel only.

Welding machine manual type must have a thermostat and a heating plate with holes for installing nozzles. The welding machine requires a pair of Teflon-coated nozzles. It should be chosen from well-known brands that have proven themselves in the market, since tools from dubious manufacturers may fail during operation, which will stop all work.

Stripping can be done manually or in the form of an attachment to a drill.

• To strip the outer layer, couplings with internal knives (shavers) are used. Select the required coupling for the diameter of the pipe being cleaned. They also use double-sided couplings that allow you to work with different diameters. To clear inner layer pipes, take a trimmer, which has knives inside. The pipe is inserted into the tool and rotated several times.
• Strippers in the form of attachments on a drill differ from manual options only by the presence of a rod that is inserted into the tool chuck.

Glue gun can be used as alternative option other types of connections. This tool has two advantages: glued seams are almost as reliable as welded and other joints, and the glue sets quickly. Such connectors perfectly fasten shaped parts and other elements.

Methods

There are several ways to connect polypropylene communications. Choosing which method to use depends on the type of PP pipes and their purpose.

Cold welding is based on gluing elements with a special adhesive composition. It is applied to the parts that need to be connected. First, the surfaces to be bonded must be degreased. After applying the glue, wait a while and connect the pipe to the necessary element. After a short period of time (approximately 20 minutes), the connection will stabilize and be reliable.

Connection using steel or cast iron fittings. This method is suitable for pipelines with a small diameter. Typically, fittings are installed on bends and branches of communications. The fitting includes elements such as a cover, a sleeve and a clamping ring, which is located in the socket of the product. The pipe is fixed using the seam ring included in the fitting design.

When connecting fittings, you must observe step by step plan actions:

• the pipe cut must be made at a right angle;
• it is necessary to remove all burrs on the surface to be joined;
• then you need to install the nut from the fitting onto the pipe and put the clamping ring on it;
• After this, you need to insert the pipe into the fitting and secure the connection with a clamping ring and nut.

Connection using flanges is considered very reliable and can withstand high temperatures and high blood pressure. This method is used when it is necessary to connect polypropylene pipes without resorting to welding. For connection, bolts are used that are screwed into the flange thread.

When connecting with flanges, the following installation rules must be observed:

• at the pipe connection it is necessary to make a cut, avoiding the appearance of burrs;
• the gasket that is installed on the cut must have a protrusion of 15 cm;
• a gasket is placed on the flange and connected to another flange installed on another pipe to be connected;
• The gaskets must be installed in such a way that their cross-section does not touch the bolts;
• More than one gasket cannot be installed on a flange, as this will reduce the tightness.

Connection using couplings. To connect with couplings, you need to make a thread on the pipes for their subsequent installation and, to make the connection tight, wrap a little tow around it. The edges to be joined should be cut evenly and the location of the coupling should be marked with a marker. Then you need to apply lubricant to the coupling and install it on the pipe in the previously marked place.

Welding refers to the hot joining method. This type of connection is one of the most reliable, and its essence lies in the melting of polypropylene with a special apparatus under the influence of a temperature of 260 C. The elements heated to the required temperature are pressed tightly against each other, and after they cool down, a reliable connection. The time after joining until the final polymerization of polypropylene will take 20 minutes.

Before proceeding with the connection by welding, it is necessary to remove all irregularities and burrs, and if the pipe has a layer of foil, then it must be treated with a trimmer.

When connecting by welding, the following sequence of actions should be observed:

• turn on the welding machine and heat it to a temperature of 260 C;
• you need to put the device nozzles on the propylene pipes to be connected - this needs to be done very quickly;
• when the elements to be welded begin to melt, they are removed from the apparatus;
• connect the molten elements to each other by pressing firmly for 15 seconds;
• The connected elements must be allowed to polymerize to fully set - this usually takes about 20 seconds.

Common mistakes when connecting by welding:

• displacement of elements during welding at the moment of their heating;
• when joining elements, they must not be rotated - otherwise the seam will be unreliable;
• When welding the valves, the location of the valves was not taken into account, and they cannot move freely.

HDPE or PVC pipe can be connected by soldering. This is especially true for polyethylene construction.

How to connect?

In the case when you need to connect a polypropylene pipe to a metal one, you can use the threaded connection method. To do this, you will need special fittings, one end of which is smooth, and the other has a thread for a metal pipe. With this type of connection, the pipe diameter should not be more than 40 mm.

The thread on the fitting can be either external or internal. Smooth surface, located with reverse side, needed for welding a plastic pipe. Mainly used for sealing flax tow, soaked in drying oil.

The tow should be applied to a maximum of two turns and in the direction of the thread.

Sequence of actions when threaded method installation:

• the pipe is cut at a right angle, its end is lubricated with grease, and then a thread is applied using a thread-cutting tool;
• remove all shavings from the thread and seal the joint with tow;
• a fitting is screwed onto the pipe thread;
• the opposite smooth end of the coupling is welded to the polypropylene pipe.

Polypropylene pipes can be connected either by welding or cold. Greater preference is given to the first option, since it is considered the most reliable and durable.

Welded joint

Before welding, polypropylene pipes and fittings for them must be treated with a degreasing solution, and then allowed to dry - only after this procedure can you proceed directly to welding. Similar preparatory work necessary for any type of PP pipes with the exception of those reinforced with foil. U reinforced pipe The cut is cleaned using a special cleaning tool (shaver), into which the desired end of the pipe is inserted and turned several times. After cleaning, the upper part of the pipe must be degreased.

You must mark the pipe with a marker, marking the required distance to press it into the fitting. Then the end of the pipe must be placed on the mandrel and the fitting must be inserted into the sleeve of the welding machine. All actions should be done very quickly and clearly. After this, the connected elements are heated for a strictly allotted time.

After the elements to be welded have melted, they must be removed from the nozzles and the pipe quickly pressed into the fitting. The connection requires some force, since the elements to be welded must be pressed tightly and held in this position for some time. You should not clamp the joining elements for more than 20 seconds, as this time is quite enough for them to firmly set. After connecting, be sure to let it cool for a few minutes.

When installing communication systems, it is necessary to connect individual elements, however this process can be done completely different ways. The connection deserves special attention plastic pipes without soldering, because in this case it is possible to do without the use of a special apparatus, the price of which is quite high.

Docking using fittings

With this option, a set of shaped parts is used that makes it possible to combine not only two, but also more elements. Every developer who does not have a soldering machine at his disposal wants to learn how to connect plastic pipes in this way.

Advantages of the method

• The low cost of fittings allows you to reduce the cost of connecting communications.
• The ease of installation makes it possible for even non-professionals to do the docking.
• The ability to use parts in pressurized systems expands the scope of application.

Note! It must be taken into account that this method applicable for elements with a small diameter, and in other situations it is thermally affected joining that is most often used.

Carrying out work

It's time to understand how plastic pipes are connected directly with compression fittings. Tools you will need: sharp knife for cutting elements, a calibrator, as well as manual or automatic pliers for the clamping operation.

First of all, cutting is done components communication system, if required in specific case. The cut must be made strictly perpendicular to avoid bevels and other flaws. After this, using a calibrator, the ovality at the joint is eliminated.

Next, a special coupling is put on, and the fitting itself is inserted into the pipe with O-rings. The top is crimped using prepared pliers. In this way, it is possible to join the plastic elements.

However, in some cases you need to know how to connect a plastic pipe to a cast iron pipe. For this, a special adapter is used, the diameter of the sides of which corresponds to the size of the pipes used. During the joining process, it is necessary to remember that the linear expansion coefficients of plastic and cast iron are noticeably different.

Gluing individual elements

In addition to the above option, there are other ways to connect plastic pipes. One of these is the gluing process, when the ends of the component parts are joined using a special chemical composition. During the work, it is possible to ensure sufficient tightness.

The principle of operation of the composition

Adhesive intended for plastic products, usually contains polyvinyl chloride, soluble in methyl ethyl ketone, tetrahydrofuran and cyclohesanone. Special additives are also added to two-component formulations to improve adhesion.

Advantages of the glue method

• High-quality grip chemical agent with the surfaces of the elements allows for high tightness.
• Availability basic material makes it possible to use it for a wide range of consumers.
• Invisibility of the joint has a positive effect on the aesthetic perception of the components of the communication system.

Attention! The adhesive used must be stored at a sufficient distance from open flame, as it catches fire easily. In addition, during work it is necessary to protect the skin from contact with the substance.

Application of the composition

You can do the gluing yourself. Work must be carried out at temperatures from +5 to +35 degrees. You need to prepare a brush with natural bristles in advance. In most cases, it comes directly with the adhesive.

Before starting the main steps, it is advisable to assemble the structure without using chemicals in order to perform preliminary fitting. Before applying the substance, the surface must be degreased using solvents.

Apply to prepared surfaces thin layer glue. The plastic product is inserted into the hole until it stops, and rotation or other manipulations should be avoided. The components are held for 15-20 seconds so that the adhesive has time to dry.

Fitting into the socket

The presented method is applicable mainly for, since pressure is not created in them. At the ends of the elements used there are special connections for plastic pipes - sockets. With their help, the fixation itself is carried out.

Positive aspects of technology

• Relatively high speed assembly guarantees installation in the shortest possible time.
• Without the need to purchase additional components, costs can be reduced.
• Possibility of implementation self-assembly allows you to refuse professional help.

Important! For gravity systems This option can be considered quite airtight, because during installation a rubber gasket is inserted inside, which at the same time makes it possible to compensate for the mismatch of the parts being connected.

Description of the assembly process

After making sure before installation that there is a rubber ring in the socket, you need to clean it of various contaminants, then you will be able to achieve good adhesion. On the smooth edge

With polypropylene, it is important to know that High Quality When carrying out such work, it can only be achieved when the thickness of the walls of the products is taken into account. Modern technologies make it possible to create quite durable and reliable communications from such pipes. They are not subject to corrosion processes, which is why they are so widespread. Such manipulations can be carried out in one of several ways, but the work can be classified into two categories:

• soldering method;
• use of fittings.

Connection methods

If you decide to find out how to connect a polypropylene pipe to a polypropylene pipe, you need to understand the methods. For example, thin-walled pipes can be connected by thread. If you need to arrange a supply system cold water, the ambient temperature in which does not exceed +20 °C, then you should use products marked PN 10. The same applies to work on laying heated floors, in which the temperature does not exceed +45 °C.

If it is necessary to arrange a cold water supply system, which will be transported when high blood pressure, pipes marked PN 16 should be used. This recommendation is relevant for pipelines with low blood pressure. Most quality option The connection is welding, it can be used for PN 20 pipes, which can withstand temperatures up to +80 °C. Their walls are thicker compared to the previous ones.

The same connection method is also suitable for PN 25 - pipes reinforced with aluminum foil, which are intended for systems central heating And hot water. Pipes with this marking will be able to withstand temperatures up to +95 °C. The connections may be permanent when welding is used; and also detachable, in this case a thread is used.

Threaded connection

Before connecting a polypropylene pipe to a polypropylene pipe, you need to figure out which method is best to use. For example, for a threaded connection you need to prepare fittings with threads, because cut the threads into polypropylene products it is forbidden. The connection is made using a special tape, which will make the joint strong and reliable.

Fittings used

If you decide to use a threaded connection, you will need:

• solder couplings;
• triple square;
• combined crosspieces;
• couplings;
• 90° squares;
• combined angles;
• ball valves;
• solder angles at 45°;
• plugs;
• adapter with external thread;
• water socket;
• fittings made of polypropylene with factory threads.

Welded joint

If you are thinking about how to connect a polypropylene pipe with a polypropylene pipe, then you can use welded method. However, it is important to note that the connection will be permanent. When melting, the molecules of one part move to another, diffusion occurs. From heating by welding electrical apparatus the parts are organically connected to each other, because they have the same chemical composition.

To carry out the work you should prepare:

• soldering iron;
• welding machine;
• polypropylene fittings and pipes;

In addition to the listed tools and materials, you should prepare a hacksaw or metal scissors, a tape measure, couplings such as taps, corners and pipes. It is important to stock up on fum tape. As for the welding apparatus, it will consist of heating element And welding nozzles, the diameter of which varies from 16 to 40 mm.

As soon as the indicator goes out, you can begin work, because this will be a signal that the desired temperature of 260 °C has been reached. This will take approximately 15 minutes. If noted subzero temperature environment, then welding work must be abandoned. If it is necessary to weld pipes with a diameter of 60 mm, you should use the socket welding method. For a more impressive diameter, butt welding is suitable, which does not involve the use of additional parts.

For pipes whose diameter varies from 16 to 50 millimeters, a hand soldering iron should be used. More impressive diameters will be joined using a mechanical welding machine. The ends of the pipes should be well heated with removable sleeves, then all that remains is to press the elements together, applying little force. This effect should last for several seconds.

Electrofusion welding acts as a more good option compared to the previous method, because the process is controlled by the program. The quality of the joint will be higher, and there will be no need for fixation. Devices with electrodes are used to supply voltage to the heater inside the coupling.

Before connecting two polypropylene pipes using the socket method, it is necessary to cut the products at right angles.

Next, the master should apply a mark to the depth of the socket, to which 2 mm should be added. The connection of products begins with heating using special device. Afterwards the parts are connected to each other. And if polypropylene has an aluminum layer, then the connection can be made through perforated holes. This allows you to significantly increase the strength of pipes marked PN 25.

Using butt welding

Before connecting polypropylene pipes to each other, you should think about which method is best to use. Butt welding may be suitable, which will allow pipes to be connected together for external sewerage. This approach is relevant if the pipe wall thickness exceeds 4 mm.

At the first stage, the welding points should be trimmed to parallelism. Afterwards you need to heat it up and ensure accuracy with a centering device. Welding must be accompanied by ventilation of the room, because polypropylene emits carbon dioxide and water vapor, as well as smoke.

Solderless connection

Quite often, novice home craftsmen wonder how to connect polypropylene pipes without soldering. For this purpose, fittings made of the same material as the pipes are usually used. If the heating system contains fiberglass-reinforced lines, then other types of products will not be suitable.

You should stock up on polypropylene fittings, which are reinforced with fiberglass. An exception is the case when there is a need to combine polypropylene with another material. In this case, threaded elements are used, for example “American”. Before connecting polypropylene pipes without a soldering iron, you should ask what fittings can be found on sale for arranging water supply and heating systems, among them:

• Y-shaped;
• straight;
• T-shaped.

It is necessary to use these elements, taking into account the method of application and position. There are several types of connection depending on the type of connection. shaped products, namely:

• compression (crimp);
• welded

Polypropylene compression fittings are supplied ready-made; there is no need to assemble them additionally. Compression fittings have advantages compared to welded ones. They are:

• ease and simplicity of installation;
• no need to use welding equipment;
• installation options polypropylene fittings for any weather conditions, because they are not afraid of negative temperatures;
• there is no need for the technician to have special skills in installing compression fittings.

If you are thinking about the question of how to connect polypropylene pipes at home using fittings, then you should familiarize yourself with the technology. At the first stage, they prepare Building tools, namely:

• gas and adjustable wrenches;
• screwdrivers;
• open-end wrenches;
• sealant;
• special scissors;
• pipe cutter;
• chamfer;
• caliber.

You may want to think about the placement of the pipes, which may be in or on top of the wall. There should be no hard corners in the diagram. Product flexibility is achieved through construction hair dryer. If you decide to use polypropylene pipes for heating, you should know how to connect them.

The connection point must be sealed in any way convenient for you. This can be done using fum tape. Then the system is assembled according to the design principle; at the corners and in places where the flow is distributed into several parts, special elements such as corners and tees should be used.

Conclusion

Now you know how to connect polypropylene pipes with fittings. However, as practice shows, the welding method is more reliable, because diffusion occurs during the process, which ensures the reliability and strength of the system.

Polypropylene pipes are much more convenient and practical than their metal counterparts. Their main advantages:

1. easy installation;
2. not a lot of weight;
3. not subject to corrosion;
4. not expensive.

Due to their advantages, they are becoming increasingly popular.

How to connect polypropylene pipes

Another important advantage of this material is that you don’t need to hire anyone for installation; you can do everything yourself. Therefore, if you need to replace an old leaking water supply system, you can safely get to work. Polypropylene can be joined by soldering or using cold method.

Method 1 - soldering

This method requires the presence of a special welding machine, which experts call an “iron.” An iron is a kind of soldering iron powered by electricity. It comes with nozzles of different diameters.

If you are not going to professionally install water pipes, you do not need to buy such a device. You can rent it; usually all sellers provide this service. The process of soldering polypropylene pipes is not complicated.

Video: How to solder pipes with your own hands

Soldering technology

Polypropylene products are connected under the influence of high temperature. The pipe itself must be heated with outside, and all connecting elements are from the inside. This creates a strong connection.

Soldering stages

• Turn on the soldering iron, it should heat up to 270 degrees C. While heating occurs, you can cut the necessary workpieces and clean them. For convenience, you can make notes that will show to what depth to immerse them in the welding machine. They are cut with a special pipe cutter or a regular hacksaw. If cutting is done with a hacksaw, you should pay attention to the burrs and if they remain, they must be cut off with a knife.
• After the soldering iron has heated up to required temperature, insert the pipe and connecting elements onto its nozzles. For high-quality soldering, all elements must be inserted evenly. Movements must be fast and confident. Parts that are exposed to heat must not be moved or twisted.
• When all the elements are well heated, they are removed from the soldering iron and connected to each other. This is also done with quick and confident movements. The parts are connected with light pressure (without rotation) and fixation for 10-15 seconds.
• After this procedure, you can proceed to soldering the next unit and so on until the bitter end, when the water supply is completely soldered.

Heated polypropylene cools quickly, thereby forming a strong and reliable connection. In just an hour, water can be supplied to the system.

Method 2 - without soldering

This is a connection method that does not require soldering equipment. With this method there are two options: connection compression fittings and the so-called “cold welding”.

For the option with compression fittings, you only need a special crimp wrench. This wrench is usually sold complete with fittings.

If you choose the “cold welding” option, then you will need a special “aggressive” glue. It is applied to the parts, after which they are connected and pressed, fixing them in this position for several seconds.

Connecting polypropylene pipes with glue is only suitable for water pipes with cold water. The connection of polypropylene pipes without soldering has big drawback, namely, compared to soldering, the time required to install the pipeline is significantly longer.

In conclusion, I would like to say that in independent connection there is nothing complicated about polypropylene pipes. Like most others construction work, you will be required to conscientiously and strictly comply with all technological standards.

Then the process of connecting polypropylene pipes will be completed quickly and, most importantly, efficiently. And the quality of the work performed is the key to durable and reliable operation water supply systems and.

Watch the video: How to properly solder polypropylene pipes with your own hands

The most often used for this is the so-called cold welding. This technology involves the use of an adhesive composition special purpose and fittings.

Advantages of using pipe connections without hot soldering

If you are thinking about how to connect a polypropylene pipe to a polypropylene pipe, then you can use a method that involves the use of special fittings. This technique has many advantages, among which we can especially highlight the increased efficiency of installation of drainage and water supply systems, the reduction of the possibility of leaks that can occur during butt welding or when chemical compound. Among other things, the described technology is less labor-intensive and also requires less energy consumption. Among other things, it is associated with lower material consumption. they are quite cheap. Using fittings and glue, you can connect pipes of various diameters, which range from 6 to 400 millimeters.

Comparison of cold soldering with mechanical and welded joints

Before connecting a polypropylene pipe to a polypropylene pipe, you should consider all the advantages of the cold soldering method. Thus, this technique, with low material consumption, speed and quality of work performed, is not inferior to traditional welding. This gluing technology does not involve the use special equipment, which greatly simplifies manipulation. You don’t have to use a special machine designed for welding, which consumes quite an impressive amount of electricity during operation. Due to this, it is possible to reduce costs installation work. If you are faced with the task of how to connect a polypropylene pipe to a polypropylene pipe, then it is worth comparing the mechanical mating of elements using fittings. The latter technology is not so energy-intensive, but more material-intensive. This is due to the need to purchase additional fittings, which increases the cost of work.

Features of connection using fittings and glue

If you do not know how to connect a polypropylene pipe to a polypropylene pipe, then it is important to familiarize yourself with the technology. To do this, you will need to use glue, which is intended for connecting pipes to parts such as fittings. The latter are most often made from chlorinated polyvinyl chloride. After application, the glue begins to dissolve the surfaces of the parts by 1/3 of the thickness. This makes it possible to implement diffusion cold welding. On this process affected by air temperature and humidity. Before connecting polypropylene pipes using cold welding and fittings, you must make sure that the ambient temperature is between 5 and 35 degrees. If there is a need to carry out installation work at temperatures below zero, then you should purchase frost-resistant glue, which can be applied until the thermometer drops to -18 degrees. If the work is carried out in hot weather, then gluing must be done in much more short time, which will eliminate the possibility of the composition drying out before the manipulations are completed. Before connecting polypropylene pipes using the described technology, you need to make sure that the glue has a uniform consistency, sufficient fluidity and does not have foreign inclusions.

During breaks between work, the container with the adhesive composition must be closed as tightly as possible, which will prevent the evaporation of volatile active components.

Technology for connecting pipes using fittings and glue

If you decide to use the cold connection method, then you need to use the technology described below. At the first stage, you need to cut off part of the pipe in such a way that you can obtain an element of the required length. For this purpose it is recommended to use a pipe cutter, special scissors or a hacksaw, the latter of which has fairly fine teeth.

If you are thinking about the question of how to properly connect polypropylene pipes, then at the next stage the end of the product is chamfered, and it is important to maintain an angle of 15 degrees. In the process of carrying out these manipulations, a chamfer is used; it is important to prevent the formation of burrs. The next step is to thoroughly clean the fitting socket, as well as the pipe, from dust, dirt and moisture.

In order to achieve effective cleaning connecting elements, you need to use cleaners designed for pipes made of CPVC. With the help of this composition it will be possible to prepare the surfaces well enough for further gluing.

Nuances of the work

If you are faced with the task of how to connect polypropylene pipes without a soldering iron, then at the next stage you can apply glue. In this case, you need to use a brush, carefully distributing the composition over the surface of the socket and pipe. The elements are inserted into each other; to distribute the composition evenly, you need to rotate the fitting 90 degrees relative to the pipe. The parts are fixed for 30 seconds, during which time they should not be rotated again. It is important to complete the entire process within 1 minute. If you are thinking about how to connect polypropylene pipes without soldering, then after gluing is completed, you need to check the presence of a bead, which is a uniform adhesive layer located around the circumference. You may have to get rid of excess glue using a soft rag.

Why is it worth using the cold method of joining plastic pipes?

Before connecting polypropylene pipes with fittings, you need to weigh all the positive negative sides other technologies. If we are talking about adhesive connection which was described above, it is worth highlighting the advantages that it is possible to implement high-quality installation pipes even in places where access is particularly difficult. The master will not have to use additional expensive equipment that can consume during operation a large number of electricity. The whole process can be carried out independently, without resorting to help. professional companies. In the process of gluing parts, a structure is formed monolithic type, which ensures the tightness of the joint. If you decide to use adhesive cold welding, then, unlike conventional welding, inner surface the product will not form sagging, which can narrow the lumen and contribute to the settling of solid particles.

Conclusion

If you connect polypropylene pipes to each other, following the simple rules and recommendations described above, then leaks and sagging of the pipeline will be eliminated. The service life of a pipeline installed using this method can reach 50 years.