Bend the reinforced-plastic pipe 90 degrees. How to bend a reinforced plastic pipe

When doing a number of both repair and construction works connected with the installation of plumbing fixtures, heating, as well as the laying of pipes, you may have a question: how to bend metal plastic pipe at home? Note that for this you do not need any special knowledge or skills, it is enough to consider a few effective ways bending of metal-plastic structures, which we will talk about.

The photo shows a metal-plastic pipe bent at an angle of 90 degrees.

Material properties

When it comes to metal-plastic structures, not in all cases it is possible to acquire products of suitable sizes and shapes, therefore, the best way out of the situation is to mechanically give the pipes the necessary shape:

The first thing that comes to mind is manual bending, because metal-plastic products bend well.
But, it should be remembered that such a pipe is very fragile, and a strong sharp impact on it can lead to the formation of deformation, as a result of which the inner layer breaks.

Bending options for reinforced plastic pipes

There are several options that allow the unwanted outcome:

Bending method	Advantages	Flaws
Manually using special technology.	The simplest and cheapest option that does not require any tools.	Chances are good that the element will be damaged.
Work using a pipe bender.	The pipe bender allows you to bend the product perfectly evenly, exactly on given angle... This approach eliminates bending defects.	Quite high cost of a pipe bender. This tool is more suitable for permanent work than for single use.
Application of sand.	The sand allows you to achieve excellent results.	The procedure is quite dusty and requires a lot of effort.
Using a special spring.	High accuracy, defects are completely excluded.	There is a difficulty in choosing a spring of the required diameter.
Wire application	The wire allows you to achieve good results with proper skill.	The procedure is quite time consuming. It is necessary to select a wire of a certain stiffness.

Manual bending technology

The simplest and most affordable option is manual bending ().

To do the work correctly and avoid marriage, the following instruction will help you:

Bend the pipe carefully and gradually so that the bend angle is no more than 20 degrees.
Now step back from the fold a few centimeters and bend the product in this place again.
In the event that it is necessary to turn the pipeline 180 degrees, it is necessary to make about 15 such bends.

Advice! In order for the metal-plastic structure to keep the given shape, you must first bend it to a greater angle than required, and then carefully unbend it to the desired angle. Thus, the form will be fixed.

This method can be used for pipes with a radius not exceeding 1 cm. It will be problematic to manually bend products of a larger diameter.

Advice! Insofar as various pipes they react differently to deformation, then it is advisable to first practice on a small segment, and only then proceed to serious work. Ideally, several small pieces can be purchased from different manufacturers.

This way, you will be able to determine the most convenient product to work with.

Using a pipe bender

If you are wondering how to bend metal-plastic pipe at home, then the best solution will be using a pipe bender. With the help of this device, you will be able to carry out the work smoothly, without making significant efforts.

The simplest and most effective is the so-called crossbow pipe bender. Its design features make it possible to bend metal-plastic as quickly and safely as possible.

The instruction consists of just a few steps:

We set the required bend angle.
We insert the pipe into the apparatus.
Now you just need to bring the handles together, and the product will smoothly bend to the specified angle.

Wire use

This is one of the most effective methods for bending a metal-plastic pipe.

The work must be carried out in several stages:

Cut the soft wire into lengths of 30-40 cm.
We place the resulting cuttings in the pipe, in the place where the bend will be carried out.
We carry out a neat bend. The wire will help you avoid cracks and breaks.
We remove the wire.

We bend with a spring

If you have a spring of a suitable diameter, then you no longer have to think about how to bend metal pipe at home. Giving a metal-plastic structure of a given shape using a spring is a well-proven folk method.

In order to make the necessary bend with your own hands, you will need to follow simple instructions:

We place the spring in the product... It should be located exactly in the place where the bend will take place.

Slowly and carefully bend the product to the desired angle.
We remove the spring.

Sand bend

This method is one of the most effective. In addition, it is distinguished by its low price, since you only need sand to work.

The procedure is carried out as follows:

We glue one of the pipe holes.
We fill it with sand.
Now we gently bend the product. The sand will perfectly protect the pipe from any defects that arise during the bending process.

Conclusion

There are a large number of options for bending reinforced plastic pipes. And it is absolutely not necessary to buy an expensive pipe bender at the same time. Some of the above technologies have been actively used for more than a year, which makes it possible to achieve high results ().

The main thing is accuracy and lack of haste, then you will be able to bend the metal-plastic product using any of the methods presented above. If you are interested in this topic, then be sure to check out the video in this article.

With the advent of metal-plastic pipes, the work of laying networks has become so much easier that sometimes the installation process resembles a Lego game. Meanwhile, this business has its own minor difficulties, such as changing the shape of elements and creating corners. We will learn to overcome them now. So, how to bend a reinforced plastic pipe at home?

Features of working with metal-plastic products

Before bending metal-plastic pipes, it does not hurt to find out what kind of structure it is, what it consists of, what properties it has, how it differs from its "brothers".

Composition and device

So, a metal-plastic pipe is a hollow aluminum structure covered (both outside and inside) with polyethylene. The integrity of the aluminum base is achieved by welding - ultrasound using the "overlap" method, or by laser, following the "butt-joint" technology.

With the help of metal-plastic pipes, you can implement such a project for floor heating. Craftsmen among themselves call this material "building plasticine"

Why coat aluminum on all sides? This step significantly improves its performance. Thanks to the inner polyethylene coating, the product is protected from the appearance of deposits, rust formation and other problems that impair the system's patency. The polyethylene layer makes the pipe cavity perfectly smooth, so lime or other "debris" simply has nothing to catch on inside the system. As for the outer layer, it protects the network elements from moisture, condensation, and corrosion.

Sometimes experts call the main "heroine" of an article a five-layer, implying that, in addition to the three layers listed, there are two more layers of special glue.

Manually or mechanically? It all depends on your budget and your skill level

Flexion rules

When do we start to think about how to bend a metal-plastic pipe? Most often during the laying of the heating network, installation of the underfloor heating system and in other cases, work with metal-plastic products. The need for such work arises due to the lack of elements of the required shape, with the required angles, etc.

Is it possible to bend metal-plastic pipes on your own? Let's figure it out. Due to the plasticity of the components of the product, you can bend practically playfully. However, one should not be like the hero of the proverb "there is strength - no mind is needed." Due to its special properties, the material is very fragile, so even the slightest wrong movement can nullify all your efforts. Most often, improper bending results in deformation of the inner layer, which makes pipes vulnerable to corrosion and clogging. Moreover, you may not even understand that you violated the system device. So, we are learning how to bend plastic pipes correctly.

It looks like a special "device" for bending metal-plastic products

Bending technology

We will discuss all possible options for bending pipes with our own hands, and then talk about the TOP-3 best techniques.

Moving on to practical lessons?

Description of existing techniques

So, technologies for changing the angle of elements available for implementation at home:

The manual method is the simplest possible option, but also the most risky, since for an inexperienced householder the first attempt is often unsuccessful.
Using sand. Excellent results at no cost. Meanwhile, the technology is "dusty" and laborious - for non-lazy users.
Wire application. Some people call this technique the best, but for the job you will need a wire of suitable stiffness (not the first one that came to your hand), as well as scrupulousness and patience.
Spring action. The technology excludes the occurrence of damage, the main thing is to choose a spring with a special diameter.

Spring-operated version

Using a pipe bender - a special "device" that provides the ideal angle - as you planned and set on the tool mark. In fact, there is no such thing as a marriage with such a device. However, the price of a pipe bender can scare away those novice craftsmen who do not plan to often repeat their "feats" of bending products.

Photo example - the result of successful work

Manual method

Let's start with the simplest option that does not require additional investments. So, how to bend a plastic pipe at home with only two hands and a desire?

Step 1. Make sure that the product and hands are dry, not greasy.
Step 2. Hold the structure securely and confidently in your hands.
Step 3. Bend the pipe gradually, making sure that the angle does not exceed 15-20 degrees.
Step 4. Step back a couple of centimeters from the site of intervention and repeat the operation.
Step 5. To turn the net 180 degrees, repeat the described procedure 15 times.

Everything is relatively simple, but, of course, it is better to practice on unnecessary fragments of structures left after cutting. The only limitation: this technology is applicable only to pipes with a radius of up to 1 centimeter. Elements exceeding the specified radius in diameter are unlikely to be handled manually.

It is worth paying attention! To keep the pipe in shape, initially bend it at a slightly larger angle, and then unbend it to the planned figure.

When bending the product, do not rush or make sudden movements

Use of sand

For work you will need:

sand (fine);
stubs;
blowtorch;
vice.

Step 1. Sift the sand making sure it is not wet.

Step 2. Stuff the product with sand.

Step 3. Plug the ends.

Step 4. Place the structure in a vice and fix it.

Step 5. Make a mark where the fold will be made.

Step 6. Turn on the blowtorch and bake the pipe in the designated place.

Step 7. Bend the product.

Step 8. Remove the sand.

It is worth paying attention! To what extent should the material be heated? Bring a piece of paper to the area of intervention. If it starts to char, then it’s enough to heat it.

And this is a marriage that can be taken to the trash

Pipe bender application

Have you decided to purchase a special "device"? It is commendable that you practically do not have to do anything: just read the instructions for the device and act based on the information studied.

A device for bending metal-plastic products is popularly called a pipe bender-crossbow. In shape, it resembles a crossbow - hence the name.

How to use the device?

Step 1. Set the desired bend angle.

Step 2. Place the product in the groove.

Step 3. Bring the handles together.

That's it - you did it! It remains to take out the bent structure and tackle the next element.

It is worth paying attention! Can't afford to buy a pipe bender? Borrow from friends, offering to help them out in return if you need any of the units available on your farm.

If you did everything right, you will get such a beauty. This is a "warm floor" system

You see, bending a metal-plastic pipe at home is as easy as shelling pears if you are familiar with the advice of experts.

Video: how to bend a pipe without special tools

Reinforced plastic pipes are made of polymer materials, reinforced inside aluminum foil or metal mesh.

This design provides sufficient strength and reliability, and also allows you to quite easily give the desired bending shape, which is very convenient when installing systems.

The popularity of these products, in our opinion, is due to the fashion for the installation of water heated floors, where metal-plastic systems are simply irreplaceable due to the long length of the heating main and, accordingly a large number bends.

No other type can be so easily and at the same time bend qualitatively to the desired shape.

Connection options

Metal-plastic pipes are connected using special fittings by crimping them with a sleeve with rubber gaskets.

The range of docking fittings is quite high and includes a variety of elbows, tees, connectors, splitters, angles of various slopes.

And yet, quite often, to ensure the required shape of the structure, it is necessary to resort to bending the pipe itself.

Theoretically, you can do without bends and use the desired shape of the fittings, but this significantly increases the number of connections, which significantly increases the cost and the likelihood of leaks.

Methods

First you need to remember that the minimum bend radius must be at least 5 pipe diameters.

You can bend with a smaller radius, but at the same time you are guaranteed to get dangerous deformations and creases, which either immediately or for a short time will make itself felt in the form of leaks and flooding.

For the correct marking of the area to be bent, we suggest recalling the school geometry:

L = 2p * R / 4;
L is the length of the section that will be bent;
R-bend radius (at least 5 pipe diameters);
P-constant equal to 3.14
With these simple calculations, you can't go wrong and ruin the bend.

Basic ways

You can bend it manually and with the help of devices.

Small diameter products (16 - 20 mm) can be bent by hand.

To do this, you need to tightly grip the pipe with both hands in your fists, rest your thumbs on it and gently bend it to a small angle (at a maximum of 10 - 15 degrees at a time), then move 1.5 - 2 cm and repeat the procedure.

Thus, you need to act until you get the desired result.

It should be noted that different products have different rigidity, so it is advisable to pre-train on a small piece.

The result is considered satisfactory when no sagging in the form of an accordion is observed on the inner radius.

Hand bending with fillers

A more reliable result is achieved when the inner space of the bent pipe section is densely filled.

To do this, pour salt, sand, any other bulk materials into the pipe, close the ends with plugs and bend.

You can use pieces of rigid wire, which are tightly driven into the pipe, and after giving it the desired shape, are removed one by one.

This method is preferable because the filler prevents the walls of the inner radius from breaking.

To simplify and improve the bending quality, as well as to large diameters thick-walled products, you can and should use mechanical devices made specifically for these purposes.

Bending devices

Mechanical or electromechanical devices designed to bend pipes are called pipe benders. Consider the types designs these devices:

Crossbow. The basis of these devices, special sets of dies, on which the pipe is pulled by a mechanical device, giving it the required shape. This species is compact, easy to use and gives nice results... It is important to understand that an individual matrix is used for different diameters and for each bend radius. This must be taken into account when planning work.

Spring loaded. Such devices consist of a rigid spring itself inserted into the pipe and limiting the deformation of the bending radius.

The essence of the work is as follows. A section is marked on which it is necessary to form a radius and a spring is driven into this place from the inside, the pipe is bent and then the spring is removed. To facilitate removal, the spring is rotated simultaneously with pulling outward.

IMPORTANT! - the torsion movement must coincide with the direction of the coils of the spring itself, otherwise it will be unrealistic to remove it.

Such a device is very easy to use, but you will have to purchase its own spring for each diameter.

Segmental. Their principle of operation is the same as that of crossbows. The difference lies only in some design features.

Dornovye. These fixtures are professional. They are designed to be folded steel pipes large diameters with thick walls.

V Lately some simplified similarities of these devices appeared for working with soft metal-plastic, copper, thin-walled, steel small-diameter pipes.

They are segments of various shapes, laid inward on hangers and gradually moving in the pipe as it bends.

Their shape allows bending without dangerous deformations.

This process is quite versatile and gives good results, but at the same time it requires a fair amount of skill and professionalism, so we recommend that amateurs choose the option from the simpler ones described above.

Prices for spring mechanisms for bending pipes vary from 50 to 1000 rubles, depending on the composition of the kit and the manufacturer.

Bending a pipe using mechanical devices will cost you from 12,000 to 15,000 rubles.

We wish you success.

Any pipeline has corners and turns, and the fewer there are, the more reliable the system. The ability to bend metal-plastic pipes facilitates installation and allows the pipeline to be completed with a minimum number of nodes. The durability of the structure depends on the correct execution of bends and turns of the pipe.

Reinforced-plastic pipes are assembled in the manner of a sandwich: between two layers of polyethylene high pressure there is a reinforced metal layer.

Reinforcement gives the product the necessary strength and rigidity, and polymer layers protect the metal from chemical attack.

This structure makes the pipes strong, reliable and flexible. But when turning 90 degrees or more, there is a difference in the stress of the materials, which can lead to irreversible deformation or breakage of the pipe. The bending process is performed carefully, trying to distribute the applied force.

Note! Most often, the need for bending metal-plastic pipes arises when installing a warm floor, where the contour has the shape of a snake or a spiral. In this case, angles and 180-degree turns are required. In those cases when it is necessary to bypass an obstacle, I perform a “duck” - a Z-shaped bend.

Basic methods of bending metal-plastic pipes

Thin pipes are bent by hand without aids. For bending thick and hard ones, resort to additional means and tools.

At home, the necessary bending of pipes is given by the following methods:

manually without aids;
manually using means for damping: bulk substances, wire or a conductor spring;
using a pipe bender.

Bending pipes manually

Pipes with a diameter of up to 2 cm are bent by hand - it is difficult to cope with a greater thickness manually. This method requires training in order to achieve accuracy. Better than others, it suits when a lot of turns are not required.

The procedure is as follows:

The places where the bend begins and ends are marked on the pipe.
They are taken in two hands so that the thumbs are located along the pipe and touch.
Bend at an angle of no more than 20 degrees, the larger the radius, the smaller the angle at each point of impact.
Move the fingers along the pipe by 1-3 cm and bend again.
They continue to move along the pipe until the end of the bend.
If the angle turns out to be excessive, holding on to the straight sections near the bend with your hands, carefully unbend to the desired angle.

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