Soldering aluminum at home, technologies, methods

1. The simplest and in a reliable way, connect or attach something to aluminum or its alloys - this is, of course, a bolt and nut or rivets. All other methods require some preparation, fixtures, special solders, fluxes for soldering aluminum, etc.

As practice shows, aluminum cannot be soldered at all in the usual way, tin-lead solder, the reason for this is the oxide film, which forms almost instantly after cleaning the surface to be soldered.

2. Therefore, one of the ways to solder aluminum is to cover the surface, immediately after cleaning, with a layer of molten rosin. Not the best, but after repeated attempts, rubbing the soldering iron tip over the soldering area can achieve satisfactory results.

3. Next, you can use a solution of rosin in diethyl ether to solder aluminum. We clean the surface and immediately lubricate it with this flux, and then sprinkle it with copper filings, which serve as an abrasive to remove the oxide film, and tin the soldering area with ordinary solder (tin-lead). Afterwards, solder to the tinned area copper wire or something else.

4. The next technology for soldering aluminum is the use of special solder for soldering aluminum and flux. Most of these solders are low-temperature, but their melting point is higher than that of tin-lead, in the range of 300-600 degrees. C. The key to success is also good heating and for this they use a gas burner or a blowtorch.

High-temperature solders are used for soldering massive parts; they are used to repair and restore parts made of aluminum and its alloys of any complexity (cars, motorcycles, etc.). The soldering turns out to be very strong. In this way, tubes, for example aluminum and copper, are soldered by inserting one into the other and soldering around. But, when soldering aluminum with other metals, make sure that the solder and flux are intended for one and the other metal.

The surface is cleaned and coated with a special flux, as in previous cases, and when the solder melts, you can scrape the solder area with the tip of a knife made of stainless steel(or a stainless steel brush) to better remove the oxide film. Thus, we tin the aluminum surface and solder everything we need to it.

This is not the end of the methods for soldering aluminum at home. You can use the electrochemical method.

5. Clean the surface and apply a few drops of CONCENTRATED solution to the soldering area copper sulfate. Then, we take a power supply of 5-12V and a current of about 1 ampere (more is possible), connect a resistance of 4-5 Ohms and a powerful one to the power supply. 5-10 W, and our device is ready. We calculate the load in such a way that the power supply does not burn out during operation, i.e., at a current of approximately 1-5 Amperes.

Now we connect the aluminum blank to the negative pole of the power supply, and to the positive pole we connect a bare copper wire (you can twist it into a small flat spiral), which is then introduced into a drop of vitriol solution so that the end does not touch the surface of the part. Everything is ready, turn on the power supply and wait a few minutes. A layer of copper, as a result of electrolysis, will settle in place for soldering. And then, wash it off (but don’t try to erase the copper), tin it, and solder the wires or terminal. This method, of course, is not suitable for soldering some massive parts, but it is suitable for contacting wires.

6. Alternatively, instead of vitriol solution, you can use hydrochloric acid: drop a drop into the soldering area and then move the copper drive along the contact pad. Copper precipitation occurs faster than in the first case, but you must be careful with the acid. And be sure to thoroughly rinse the soldering area with water.

Connecting copper pipes: instructions and comparison of various installation technologies

To prevent the acid from corroding the excess area, it can be sealed with tape or filled with paraffin, and the desired area can be exposed. That. You can solder aluminum with copper and other metals, and the contact pads will have a beautiful, neat shape.

That's all, but if there are any other ways to solder aluminum or additions to the above, write.

Victor Donskoy
www.masteru.org.ua

IN modern construction A wide variety of pipes are used. There is also large selection ways to connect them into a single pipeline. Some require the use of specialized equipment and skills, while others can be done by almost anyone. This article will discuss how to connect two pipes.

Connecting metal pipes

Welding metal pipes

To connect two metal pipes, you can use two methods:

• welding;
• threaded connection.

The first option has recently been used less and less. The fact is that welding requires the use of special equipment - a welding machine. Also, such work must be carried out by a specially trained specialist.

The connection itself can be made using various methods:

• transverse butt;
• longitudinal butt;
• one-sided corner;
• double-sided corner;
• socket overlap, etc.

Most of these terms are familiar only to specialists. Therefore, if you decide to connect the pipeline using electric welding, then it is better to call a specialist. The joints themselves are strong and reliable (provided the work is done well).

Soldering copper pipes

If copper pipes are used, the soldering method is used. Such pipelines are mainly used in luxury buildings (copper is very expensive). Therefore, you cannot do without a highly qualified specialist, although if you read the article “Soldering copper pipes with your own hands,” you can try.

A more common method is a threaded connection. Anyone can assemble any pipeline using this method. At the same time assembled structure It can be either straight or with turns and bends. To do this, a thread is cut at the ends of the pipes and a special lock nut is screwed on.

Cutting threads on a pipe by hand

The thread can be cut both in a factory and at home, because when installing pipelines it is often necessary to cut pipes, in this case you can do the cutting yourself. For this, most often they use special device- klupp. This is a special, small tool made of highly durable material. By screwing this device onto the pipe, a thread is cut on it.

Klupp

The locknut is screwed onto the pipe joints. The result is a durable and reliable connection. Tow or fum tape wound around the thread is used as a sealing material.

You can also find a connection without using nuts. In this case, fum or tow is wound onto the threads and the pipes are screwed into the purchased coupling with internal thread.

Pipeline installation diagram on a threaded connection

Among the advantages of this method of connecting two pipes are its simplicity (all work is carried out without welding), reliability and disassembly of the resulting joint. Namely, these are the properties that are needed when creating indoor pipelines.

Connecting pipes made of other materials

Soldering polypropylene pipes

The connection of two pipes made of HDPE and plastic can also be carried out using welding (in this case it is called soldering) and using fittings.

When soldering, two methods are used:

1. Butt.
2. Using fittings.

The first option requires special equipment and can be performed by a highly qualified specialist. Butt soldering is used only when installing pipelines large diameter, therefore, when creating household communications, it is not used. Soldering using connecting elements (electric welded or special) can be carried out independently.

Compression fittings

But most often they use connections without soldering. Special fittings are designed for this, such as:

• compression;
• reduction.

The first option is used when connecting pipes of the same diameter. In this case, the pipes themselves can be made of different materials.

Reducing fitting

Reducing fittings are used when it is necessary to connect pipelines with different diameters.

The principle of their use is quite simple. A fitting is put on each end of the pipe. Then, using a wrench, tighten the nut. The result is a strong and removable connection.

Press fitting for metal-plastic pipes

Joining of metal-plastic pipes is carried out in two ways:

1. Compression split fitting. During the installation process, the ends of the fitting are inserted into the pipe. They have rubber seals that keep them securely inside. Then the fitting is tightened with a collet and secured with a control nut. Such a connection can be subsequently disassembled.
2. Press fitting. This method is used less frequently, since the joint is permanent. The fitting shanks are inserted into the pipe. Then, using a special device, the flexible cuff is crimped. The result is a strong and reliable connection.

Having familiarized yourself with the methods of connecting pipes, all that remains is to choose the product with which it will be most convenient for you to work.

Video

This video shows how to weld metal pipes using electric welding:

See how a plastic pipe is connected to an iron pipe:

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It's simple - How to connect plastic and metal pipes without welding || STROIM-GRAMOTNO.RU

1. Pipe fittings
2. Threaded connection
3. Cutting
4. Complex option

the entire water supply system and only from the pipes, as you wanted, everything will not work out. The heating radiators and heated towel rails are still made of metal. To prevent emergency situations of leaking joints, you need to know how to connect plastic metal pipes by welding.

Fittings for PVC and pipes

Times, in stores the necessary element is almost impossible, fortunately, for a long time. Therefore, combining and plastic, the need to invent Everything has already been invented, produced and displayed on You will only have to go to pay for the purchase (it’s too expensive for you) to bring home. The main thing is to buy what suits you and the metal pipe.

By the way, fittings designed specifically for the joints of metal plastic pipes are high-quality products that will serve you well, provided you can install them correctly.

with thread

Since there are plastic and pipes without, there are several to begin with, the most popular ones.

So, you have a metal pipe, on its own there is a thread for another one. And for the question of how it is with a plastic one that has threads, you again need to go to the store to buy it. The fitting you will purchase is a coupling with a threaded bushing fused into one. Please note that American ones are for different pipes being connected.

In this connection the metal plastic pipes are as follows:

1. Using a special soldering iron for pipes, weld onto the pipe. cooling of the joint.
2. metal pipe, put it on another and screw it in. To seal, you can use
3. Turn on the water and make sure there are no leaks. turn off the leak again, unscrew the nut, and repeat the procedure again with the old FUM tape.

Cutting

Thread dies

If there are no plastic pipes on your pipe (this happens, you decide the existing plastic pipes in your apartment or apartment), you will have to thread them first. Do this using something called a thread cutter. They can also be electric. you will depend only on its availability to you.

An electric thread cutter is not made from Therefore, if you need it for one or two times a day, rent it from someone, don’t buy it. True, it is easier for them than with a ruler, so you don’t have to put any effort (to hold the pipe in place if it comes out of you. The thread cutter kit includes types of rulers for different pipes.

Please note: If the distance of the pipe to is too small, you can simply put it on the pipe. it’s also quick enough for you to take breaks from work, cutting into several

Regardless of which thread cutter you use, there are some that are necessary to get the result of a neat required length:

1. Before starting work, you need to clean the existing paint.
2. If the surface of the pipe has metal stains, it is necessary to
3. When using a manual one, try not to first go forward, then turn back, repeat everything until the thread is the right length for you.

option

Clamp coupling

The connection with the help guarantees a tight seal. However, there are times when, when thinking about connecting plastic metal pipes by welding, you abandon the path. This usually happens because the metal is too long or located so that you can’t cut a thread on it.

You will have to take advantage of this difficult option, some consider it unreliable. In fact, this is true, and you are correct, then the plastic and pipes will last quite a long time.

To connect the two you will need a Quick coupling (made in Poland):

1. Clean metal pipe old paint.
2. Take the coupling into your hands and disassemble its elements.
3. Consistently onto the metal parts of the coupling. from seal to end should be less than 10
4. Carefully insert the metal pipe into the connecting body, then push in all the rings and the nut.
5. So coupling reverse side thread, then you can connect the metal one with the American one to the pipe

When choosing this connection, it is not that Quick couplings are available in different diameters. And if you have a coupling on a pipe, then you most likely bought the wrong thing for you

Well, to check how much you have tightened on the pipe, pull the second pipe, so as not to tear it out of the wall, it should not be along the pipe.

records

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How to connect two pipes of the same diameter: current methods for independent implementation

In this article we will look at what are the instructions for connecting one-size pipes made from various materials. The topic of the article is interesting, since there is a wide range of products on the market various pipes, which differ from each other not only in operational and technical characteristics, but also different methods connections into a single system.

But, before considering the features of conducting installation work, let’s look at what types of plumbing accessories can be purchased.

The figure shows a threaded connection of heating pipes made using a coupling

Classification

Separable connection profile pipes bolts during greenhouse construction

All water pipes, in accordance with the production materials used in their manufacture, are divided into the following categories:

• metal modifications;
• polymer modifications;
• metal-plastic products.

Important: Each of these modifications is presented on the market wide range products that are characterized by one or another connection method. Therefore, when planning the installation of water supply in your apartment or country house, you need to take the choice of materials and connection methods with maximum responsibility, since the price, durability and appearance of the finished system largely depend on this.

So, let's look at how to independently connect the mixer to the pipe.

Joining of metal pipes

Threaded connection on a steel water pipe

In the process of installing metal (cast iron, steel and copper) plumbing and heating systems, threaded and welded joints are used.

Let's look at each of these methods in detail:

1. Threaded installation, which, by the way, also includes American pipe connection, is a technology that allows you to assemble water pipes from elements with the same cross-sectional diameters.

To do this, a thread is cut at the ends of both pipes, over which a special metal coupling is screwed - a fitting. Using special fittings, you can assemble both straight and curved plumbing and heating systems.

The fitting used on such structures has an internal thread, while the pipes have an external thread. If fittings for installation are purchased with already cut threads, then on the joined elements you will have to cut them yourself using dies.

Among the advantages of the technology, we note the strength and durability of the finished result. In addition, if necessary, the threaded fitting can be unscrewed and the entire structure can be disassembled in order to repair the damage or redo it.

Important: As a rule, standard threads are used on pipes and fittings. But if you purchase foreign-made accessories from little-known brands, you need to make sure that the product will correspond to the metric thread type.

1. Installation plumbing systems using welding is rarely used. Main disadvantage welded joint- this is the impossibility of doing it yourself, since a professional welder with special equipment and experience in using this equipment can cope with such work.

To install two pipes of the same size, the following types of welded joints are used:

• transverse butt (without boring or with internal boring) with a backing ring;
• longitudinal butt (without edge bevel or with bevel) with one-sided seam;
• transverse butt with one-sided seam;
• one-sided corner;
• double-sided corner;
• socket overlap.

The butt joint is the most common, as the finished result is characterized by high strength, provided that the joined elements are correctly centered.

If a water pipe with an internal diameter of up to 500 mm is being assembled, a one-sided seam is welded, the strength of which is quite sufficient. If the diameter is larger, the root of the seam is welded from the inside, resulting in increased strength of the joint.

The weld is considered optimal type connections when installing industrial water pipelines, but is used extremely rarely in everyday life due to the high cost of the finished version and cramped conditions for using the welding machine.

Brazing of copper components is a technique used in the assembly of premium plumbing systems.

The installation principle is as follows:

• the ends of the joined elements are cleaned and covered with solder;
• cleaned and coated with solder inner surface fitting;
• the pipe is inserted into the fitting and heated with a burner;
• After the solder cools, a strong and durable coupling joint is obtained.

Types of connection of polymer products

The diagram shows a step-by-step connection of corrugated pipes

If the question is how to connect HDPE pipes, then in this case the installation is much simpler than assembling a metal water supply system. No threads are cut on the plastic, and installation is carried out using two methods: by soldering or using fittings.

1. Connecting HDPE pipes using fittings is popular when assembling household water pipes and sewer systems. The relevance of the method is not surprising, since the fittings, regardless of modification, can be installed even by a novice plumber.

Fittings according to design features are divided into the following categories:

• Crimping modifications are simple yet effective and versatile mounting accessories. For installation, special pliers are used to evenly distribute the applied force along the entire perimeter of the crimp collar.
• Press fittings are the most reliable, as they guarantee a complete absence of leaks.

In the picture PVC connection pipes using compression fittings

Copper pipes are used during installation DHW systems, cold water supply, air conditioning, heating, gas supply. They are expensive, but durable, flexible, and resistant to corrosion. But to engineering communications of which have served for decades, the connection of copper pipes must be done correctly.

We will tell you how to install copper pipelines that ensure the tightness of the transported medium or circulating coolant. The article presented for review describes installation technologies in detail. Taking into account our advice, the construction of the systems will be completed “perfectly”.

To install internal pipelines in the house, you can choose a pipe made of plastic, metal-plastic or stainless steel. But only the copper analog can last for more than half a century without problems or major repairs.

Properly installed copper pipeline systems in practice work properly throughout the entire service life of a cottage or apartment building.

According to accident statistics, the fittings and solder joints used during installation are more reliable than the copper pipes themselves - if a breakthrough in the system occurs, it is only on the wall of the pipe product

Copper pipes are not afraid of long-term heat loads, chlorine and ultraviolet radiation. When they freeze, they do not crack, and when the temperature of the internal environment (water, wastewater, gas) changes, they do not change their geometry.

Unlike plastic analogues, they do not sag. This plastic is subject to expansion at high temperatures; this does not happen with copper by definition.

Copper pipe products have two disadvantages - high price and softness of the metal. However, the high cost of the material pays off with a long service life.

And to prevent the pipe walls from being damaged from the inside by erosion, filters must be installed in the system. If there are no contaminants in the water in the form of solid particles, then there will be no problems with the destruction of pipelines.

Requirements for pipe processing and welding

When working with copper pipes, the following rules must be observed:

1. When installing hot water supply or hot water supply by soldering, you should avoid using lead solder - lead is too toxic.
2. The water flow speed should be no higher than 2 m/s, otherwise the smallest particles of sand or other solids will gradually begin to destroy the walls of the pipe.
3. When using fluxes, after completion of installation, the pipeline system must be flushed - flux is an aggressive substance and will contribute to corrosion of copper pipe walls.
4. When soldering, do not allow the joint to overheat - this can lead not only to the formation of a leaky joint, but also to a loss of strength of the copper product.
5. Transitions of pipes from copper to other metals (steel and aluminum) are recommended to be made using brass or bronze adapter fittings - otherwise steel and aluminum pipes will quickly begin to corrode.
6. Burrs (metal deposits) and burrs at the cutting sites must be removed - their presence leads to the formation of turbulent turbulence in the water flow, which contributes to erosion and reduces the service life of the copper pipeline.
7. When preparing copper pipes for connection, it is strictly forbidden to use abrasives - particles remaining inside after installation will lead to damage to the metal and the formation of a fistula.

If in the plumbing or heating system in a house, in addition to copper, there are also pipes or elements made of other metals, then the water flow should go from them to copper, and not vice versa. The flow of water from copper to steel, zinc or aluminum will lead to rapid electrochemical corrosion of the latter sections of the pipeline.

Copper pipes can be cut and bent without problems; even a novice master can handle connecting them into a single pipeline system. You just need to select the appropriate tools and follow the instructions

Due to the ductility and strength of the metal, copper pipes can be cut and bent without problems. Rotation of the pipeline can be done either by using a pipe bender or using fittings. And for the installation of branches and connections with various devices, there are many parts made of heat-resistant plastics, brass, stainless steel and bronze.

On the interaction of copper with other metals

In most private homes, domestic water pipes are assembled from steel and aluminum pipes. Heating systems also contain radiators made of steel or aluminum. Incorrect insertion into such copper pipe routing is fraught with considerable problems.

By building regulations In order to eliminate corrosion processes in the pipeline from pipes of different metals, the water flow should be directed towards the copper

Most best option installation is the use of pipes and devices exclusively made of copper and its alloys. Nowadays you can easily find bimetallic aluminum-copper radiators, as well as corresponding fittings and shut-off valves. It is worth combining different metals only in extreme cases.

If combination is inevitable, then copper should be the final element in the chain of pipeline elements. It is impossible to rid it of its ability to conduct electric current.

And in the presence of even a weak current, this metal creates galvanic pairs with steel, aluminum and zinc, which inevitably leads to their premature corrosion. When installing a water supply system, bronze adapters must be inserted between them.

Another potential problem is oxygen in the water. The higher its content, the faster the pipes corrode. This applies to pipelines both made of the same metal and those made of different ones.

Often, cottage owners make a serious mistake by frequently changing the coolant in heating system. This only leads to the addition of completely unnecessary portions of oxygen. It is best not to change the water completely, but to add it when the need arises.

Mounting choice: detachable vs permanent

To form a single pipeline system, you can use several methods of connecting them. Various plumbers use crimp and press fittings, welding or soldering. But before you start the work yourself, you need to decide whether the pipeline should be permanent or detachable.

There are three installation technologies for connecting copper pipes:

• electric welding;
• soldering using a torch or electric soldering iron;
• pressing.

All these technologies can be used in the formation of both detachable and one-piece systems. Here it is more a matter of using a variety of fittings and adapters or refusing them.

If a structure cannot be disassembled without destroying its individual parts, then it is considered one-piece - it turns out cheaper, but it is more difficult to repair.

If the pipeline system needs to be detachable, and also easier to repair and add new elements, then the connections must be made detachable.

Fittings are used for this:

• compression;
• threaded;
• self-fixing.

It is easier to make detachable connections yourself; you can even do without soldering. They do not require excessively high qualifications from the master.

However, such units require constant inspection and tightening of the nuts to prevent leaks. Changes in pressure and temperature in the system lead to weakening of the fasteners. And from time to time it is recommended to tighten them.

If access to copper pipes is planned to be tightly closed with finishing or concrete screed, then it is best to connect them into a one-piece structure by soldering or welding. This system is more reliable, durable and resistant to abrasions.

Carvings are prohibited on copper products. This metal is too soft in its structure. When installing a detachable pipeline, all threaded connections must be made using fittings. The latter can be connected to a copper pipe by pressing or soldering.

Before making connections, copper pipes are prepared in a special way:

Image gallery

Cutting a copper pipe is done with a hacksaw or pipe cutter. The cutting line must be exactly at a right angle

After cutting, the end of the pipe must be processed with a deburring tool to remove the slightest irregularities and burrs

The part of the pipe immersed in the socket prepared for soldering is thoroughly cleaned of dirt and degreased

It is mandatory to clean and degrease the socket of the coupling, elbow or tee that will be soldered to the pipe

Cutting copper pipe before joining

Removing burrs with a deburring tool

Degreasing and cleaning the external surface

Cleaning the bell of the coupling and fitting

Three main connection methods

Before connecting sections of copper pipes, they must be cut in accordance with the wiring diagram and prepared. You will need a pipe cutter or hacksaw, a pipe bender and a file. And for cleaning the ends, fine-grained sandpaper will not hurt.

Only having a diagram of the future pipeline system in hand can you calculate the required amount of consumables. It is necessary to decide in advance where and what diameter the pipes will be installed. It is also necessary to clearly understand how many connecting elements are required for this.

Option #1: Welding copper pipes

To perform automated or manual welding of copper pipes, electrodes and gas are required to create a protective environment (nitrogen, argon or helium). You will also need a DC welding machine and, in some cases, a torch. The electrode can be graphite, tungsten, copper or carbon.

The main disadvantage of this installation technology is the significant differences in the characteristics of the resulting seam and the pipe metal. They differ in chemical composition, internal structure, electrical and thermal conductivity. If welding is performed incorrectly, the joint may even separate later.

Due to the alloying of copper as a result of the action of the deoxidizer present in the electrode, the weld seam is in many respects very different from the base metal being welded

Only a qualified craftsman can properly weld copper pipes. This requires certain knowledge and skills.

This installation option has a lot of technological nuances. If you plan to do everything yourself, but have no experience working with a welding machine, then it is better to use a different connection method.

Option #2: Capillary soldering

In domestic conditions, copper pipes are rarely connected by welding plumbing fixtures. It is too complex, requires specialized skills and is time consuming. It is easier to use the capillary soldering method using a gas torch or blowtorch.

The technology of soldering copper pipes with solder is based on the capillary rise (seepage) of the latter after melting along the gap between two pressed metal planes

Soldering of copper pipes happens:

• low temperature - soft solders and a blowtorch are used;
• high temperature - refractory alloys and a propane or acetylene torch are used.

These methods of soldering copper pipes do not make much difference in the final result. The connection in both cases is reliable and tear-resistant. The seam with the high-temperature method is somewhat stronger. However, due to the high temperature of the gas stream from the burner, the risk of burning through the metal of the pipe wall increases.

Solders are used based on tin or lead with the addition of bismuth, selenium, copper and silver. However, if pipes are soldered for a supply system drinking water, then it is better to abandon the lead version due to its toxicity.

Image gallery

To implement low-temperature welding, it is not necessary to have special equipment and special skills of the performer. It can be done on our own

Low-temperature soldering connections are mainly used in the assembly of pipelines from soft pipes R 220. They can withstand a pressure of 220 N/mm², which does not exceed the operating parameters in domestic heating and water supply networks

To perform low-temperature soldering, pipes and solder just need to be heated with a standard blowtorch.

To create a melt that fills the capillaries and the gap between the connected pipes, low-melting solder is used, which quickly melts and flows freely along the socket

Low temperature welding at home

Coil with soft copper pipes

Blowtorch for low-temperature soldering

Using low melting point solder

There are two methods for soldering copper pipelines:

• bell-shaped;
• using fittings.

The first option involves expanding the end of one of the connected pipes with a special expander. Then this socket is put on the second pipe, and the joint is soldered using solder.

The end is expanded so that there is a gap of 0.1–0.2 mm between the outer and inner walls of the connected products. No more is needed. Solder on it, due to the capillary effect, will still fill the entire available gap.

In this technology, it is important not to damage the pipe during expansion. If it is made of solid copper (R 290), it will have to be pre-fired. In this case, the metal at the joint acquires the properties of a soft analogue. It is important not to forget about these changes when calculating operating pressure parameters in the pipeline.

The use of special fittings for capillary soldering eliminates errors with the degree of expansion of the pipe when forming the socket; they are initially adjusted to the required dimensions

To simplify the soldering of copper pipeline elements with your own hands, it is enough to purchase ready-made couplings, turns, tees and plugs. They already have the necessary bell. The use of these parts increases the cost of installation work, but greatly simplifies it.

To clean the metal at the soldering site and lubricate the solder, the ends of the connected pipes are coated with flux. It should only be applied to the outside of pipe walls. It does not treat sockets and fittings from the inside. This is simply not necessary.

Image gallery

To perform high-temperature soldering, the use of a gas propane or acetylene torch is required

To quickly carry out low-temperature melting, fittings with low-melting solder fused into them are used. They can be used for high-temperature soldering

To improve the quality of the solder, the connected sections of pipes are coated with flux, which acts as a lubricant and etching of the metal. In high-temperature soldering, borax is used as a flux.

To produce high-temperature soldering, you will need refractory solder made of bronze or a silver-copper alloy. It is supplied in the form of rigid rods with a diameter of 3 mm

Propane or acetylene gas torch

Using Fused Solder Fittings

Treatment of the joint area with flux

Rod refractory solder

To perform soldering, the pipes are inserted into the socket and heated with a burner. When the desired temperature is reached, solder is applied to the gap. It begins to melt and flow inside.

If too much of it gets into the joint, it will leak out from inside the pipeline, which will lead to a narrowing of the internal diameter of the pipe. And if the flow rate is low, the connection will be insufficiently soldered.

If problems arise with the use of solder, then you can use fittings that already have it in them. required volumes. To simplify the work, we are still at the factory during these connecting elements a capillary belt made of the appropriate alloy is introduced from the inside. This part just needs to be put on the pipe and heated with a burner.

Option #3: Push-in fittings and press couplings

Permanent connection of copper pipes can also be made using press couplings or compression (collet) fittings. They use an O-ring instead of solder. The first option is clamped onto the pipe with special pliers, and the second - with union nuts and a wrench.

If you are interested in how to connect two aluminum pipes, we will talk about the intricacies of this matter and reveal its small tricks. The need for this operation appears quite often in everyday life and can sometimes confuse very experienced craftsmen. Typically, this task is performed using welding or threading. But there are other ways. After all welding work not only expensive, they require professional equipment and a specialist and cannot always be performed in the right place. In addition, sometimes pipes need to be connected very quickly, without waiting for the welder to arrive with the equipment.

Fittings can do anything

To quickly and reliably connect aluminum pipes at home, special fastening elements - fittings - have been created.

They are divided into two types:

• along the cross-section of the elements to be connected: straight (two identical diameters) and transitional (two different diameters),
• by purpose: corners and bends, tees, couplings, crosses, fittings, adapters, plugs, caps.

Fittings not only productively solve the problem of how to connect aluminum pipes without welding, but also simplify the process of installing any communication networks or manufacturing various structures.

The most popular fittings are the crimp type of installation, or more precisely, press fittings.

Why are compression fittings recommended:

• the joining of pipes is completely sealed,
• strength and reliability of the connection,
• vibration resistance.

Types of fittings

Couplings are the most commonly used type of fitting elements. High-quality couplings with fasteners allow you to quickly and reliably ensure reliable joining of two or more pipes. A variation of it called the Gebo coupling is also often used.

Flanges with rubber gaskets ensure reliable joining of pipes. It is preferable to select such elements with a large cross-section.

Also, the question of how to connect an aluminum pipe to each other can be answered by a device such as a repair and installation clip. This is a coupling or triple type of fitting, consisting of 2 parts attached to each other. This is very good way for an express option for joining pipes - for example, in case of an accident or other emergency situation.

No less effective and simple is the method of joining pipes using a clamp, which ensures a reliable connection. It tightens on one side, which makes it different from a clip. The connection is therefore considered more durable.

How to Join Square Aluminum Tubes

Aluminum pipes of square, rectangular or other cross-sections are usually connected using a crab system or clamps.

The crab system is narrow strips of metal made of 2 parts connected to each other. They have the shape of the letters T, X or G and can securely cover pipe sections. The resulting joints are highly reliable. But the joining occurs only at right angles and is made for pipes small size sections.

A more universal method of joining pipes with complex profiles is a clamp. We offer to select and buy aluminum pipes on our website at favorable prices and in a wide selection.

Installation of pipelines for water supply and heating networks is usually carried out by welding, less often - using threaded connections. When executing repair work usually the same technologies are used.

Situations often arise when the use of welding or threaded connection difficult for some reason. For example, in an apartment it is necessary to repair the heating or water supply pipework, which runs close to the wall or to another pipe.

It is impossible to perform a circular welding of the joint of such a pipe or to cut a thread on it. In this case, the acute problem arises of how to connect pipes without welding and threading. And there is a solution to this problem.

Connection without welding or threading is possible thanks to special parts - fittings. A fitting (from English “to mount”) is an element used in the following cases:

Mounting parts designed to perform various functions have their own names. To connect pipelines of the same diameter, couplings are used; pipes of different diameters are connected by adapters.

To turn the pipeline route, bends having the required angle are used. A double branch in a perpendicular direction is made using a tee, and there are also crosses, fittings, plugs, and manifolds.

Fittings can be threaded or crimped. Since we are talking about pipe connections without welding and threading, the subject of consideration will be the relatively recently introduced compression fittings, otherwise called compression fittings.

Compression fittings for pipe systems

The technology for using crimp parts, which allows connecting metal pipes without welding or threading, has appeared relatively recently.

A pioneer in the production of fittings for pipe connections without threads and crimp welding was Gebo Armaturen GmbH, which received the first patent for this technology back in 1937.

Today the name of the company has become a household name; the fittings for crimping pipe connections are called “Gebo coupling”.

In the production of connecting fittings, Gebo Armaturen uses ductile cast iron. The company's product range includes fittings for various types connections and branches.

Gebo fittings are designed to work with pipelines made of different materials. With their help you can connect plastic pipes, pipe products made of steel, copper, aluminum. There is no need to use welding or threading.

Repair and installation clip

A universal product that can be used to repair pipes metal products without welding, as well as polyethylene pipes - this is a repair and installation holder.

It consists of two cast cages in the form of semi-bushings, having four ears for bolt fastening. Included in the package rubber seal in the form of a hose cut to length and four bolts.

In essence, it is a clamp that plumbers often use, but it is made very well. Available for pipes different diameters, making it possible to repair them without welding and threading.

The product is used for repairing damaged pipelines for various purposes. If it occurs in a pipe through hole, a split seal is placed on the damaged area, with the cut oriented in the direction opposite to the damage.

Clips are installed on top of the seal and the bolts are tightened. These repairs do not require welding and can sometimes be done under pressure without shutting down the pipeline.

Repair and installation clip with outlet

This product differs from the previous one in the presence of an outlet with an internal thread on one of the cast-iron holders.

The seal in this fitting also has the shape of a cut hose, but on the side opposite the cut there is a hole, which should be aligned with the outlet during installation.

This fitting makes it easy to make a branch from the pipeline; just drill a hole in its wall. Can be used when installing watering lines. Taps or water sprayers can be screwed directly into the threaded elbows.

Double-sided crimp connections

A universal product that can be used to make connections steel pipes, and also pvc pipes. It is this fitting that is most often called the Gebo coupling. It can be used to connect two pipes end to end.

To make a connection, the pipes must be cut evenly and cleaned of dirt and rust, the ends of the pipes must be well processed. A clamping nut is put on the end of the pipe, then a clamping washer, which is a collet - a conical bushing with a cut on one side.

The inner side of the sleeve is covered with circular notches. IN seat coupling, designed to stop the end of the pipe, a sealing gasket is inserted. After this, the clamping nut is tightened.

Moving along the thread, the hole in the nut presses the conical part of the split sleeve against the pipe. At the same time, the internal notches of the sleeve cut into the surface of the pipe, tightly fixing it and pressing it against the end gasket. This way ensures the necessary tightness and mechanical strength of the connection.

A similar procedure is performed on the second side of the coupling, where the end of the second pipe is inserted.

Single and double clamp and thread connections

A fitting with a one-way clamp is like half of the coupling described above. On one side the pipeline is connected, the other side is a branch with internal or external thread.

Where a tap or outlet can be screwed in. It is, in fact, a tee. The double clamp connection can be used to quickly install a perpendicular pipe bend without welding.

For the installation and repair of heating and hot water supply pipes, the company produces a full set of fittings equipped with elastic gaskets capable of operating at a temperature of +95°C.

All these fittings, like those described above, are universal and can be used to connect polypropylene pipes.

Gebo's range of fittings includes connecting devices for large-diameter main pipelines intended for underground installation. The connection of pipes in such pipelines can also be carried out without welding and threading.

Flange Applications

A flange connection is used in cases where it needs to be disassembled at some intervals. To make such a connection, flanges must be installed at the ends of the pipes - round plates with holes for bolts.

The flanges must be secured by welding. For subsequent assembly and disassembly, the connections will only be needed wrenches for tightening bolt threads.

When installing a flange interface, an elastic gasket is placed between them, after which the flanges are pressed against each other and clamped with a bolt thread.

In water supply and heating systems, flange mountings often have metering devices and circulation pumps, which must be removed every season for prevention, repair and verification. Flanges can be used during installation summer water pipelines, which must be dismantled every autumn.

Fastening professional pipes

Profile pipes used for manufacturing load-bearing structures, are most often connected by welding. In the event that such a pipe structure must be dismountable, it is necessary to connect the profile pipes without welding. For this purpose, various fasteners and clamps.

The so-called crab systems, which are stamped from sheet metal curly braces.

Crab systems allow various options joints of two, three and four profile pipes in different planes.

The angles formed by the pipes connected by such a system are always 90°. With the help of crab systems it is convenient to assemble temporary structures from profile pipe elements, for example, scaffolding. The system is tightened using the threads of bolted connections.