How to cut plastic pipes threw.

How and how to cut metal.plastic pipes at home

When carrying out installation works on the arrangement of pipelines of the heating, water supply or sewage system from plastic pipes, a very frequent operation becomes the cutting of the material. It is not recommended to cut pipes with improvised tools, as this complicates the subsequent installation, negatively affects the quality and reliability of connecting units.

For such purposes, a special tool is used. a pipeline for polypropylene pipes. This device is designed to obtain strictly perpendicular axes of the pipe, neat, pure from burrs of cuts, which provides ideal joints with a variety of connecting details or locking reinforcement.

It would seem. what is the problem of getting such a tool for cutting pipes? But, it turns out, there are certain nuances of choice here.

The variety of pipelines for polypropylene pipes

In specialized stores, customers offer various models of devices for cutting polypropylene (PP) pipes of different diameters. This tool can be both mechanical and electric.

Each type has its own characteristics, advantages and disadvantages. To understand their design and determine the choice, you should consider different options.

All cutting tools can be divided into scissors, guillotines, planetary mechanisms, saws.

Most of the rezaks belong to precision manual instruments. this definition means “accurate”. That is, the cut is ideally flat and appropriate to the applied markup. Such cutters can have a ratchet, guillotine and roller structure, which allows, without making special efforts, to cut the PP with one hand.

The disadvantage of some pipe cutters (this is more related to scissors) are possible difficulties in centering the workpiece that cause the incorrect course of the blades, which leads to the ovality of the cut. That is, the blade with insufficiently correct fixation of the pipe can do a cut not at right angles to the walls (axis).

Then various types of products with manual action or electric drive will be considered.

Purpose

When installing metal.plastic tubes, it is impossible to do without cuts. To perform this operation, you can use:

• Knife with seriator sharpening or hacksaw for metal. Relevant to perform one.time work. If you need to cut many pipes, this method is not suitable, since a large number of costs are required, the ends are uneven, there are burrs.
• Corner grinder. Metal disks quickly cut multi.layer parts, but the power tool makes a lot of noise, after cutting there remains a large amount of garbage.
• Pipeline. The most relevant way, if you need to engage in large.scale laying of pipelines.

Specifications

There are several types of cutters for metal.plastic pipes:

• Khrab cutter. Precision scissors that are suitable for cutting tubes with a diameter of up to 100 mm. Working parts. sharp metal blades. The part is fixed in the clip, the incision is performed.
• Roller cutter. A universal tool that has a C-shaped clip. Large or small videos are installed on different models. The former are suitable for cutting parts with a diameter of up to 125 mm, the latter. up to 50 mm. For cutting, you need to rotate the pipeline around your axis. The videos begin to move towards each other. Since the rollers rotate, cutting, not squeezing.
• Guillotine. Produces uniform cuts over the entire area of ​​parts. The output is flat sections without burrs, bumps. The blade can fall through the rotation of the valve or by the principle of the pistol.

A separate type of pipeline. a mechanism with a clamp latch. The principle of operation of this instrument is similar to a roller cutter, but the workpiece is clamped from all sides, which ensures reliable retention, reduces the risk of irregularities.

Rates of the pipe (

Rules for working with a pipeline

Working with a pipeline is not very difficult, but, nevertheless, requires a certain dexterity. If for you this is the first experience of handling a tool, then before starting work on a specific project, it is worth spending a certain amount of time and pipe to master the cutting technology.

The sequence of actions can be described as follows:

• A mark is applied to the place of the proposed section. It should be strictly perpendicular to the longitudinal axis of the pipe.
• The pipe is fixed. Some pipeline models have special devices for this purpose: a spring or a movable rod. In cheap models of the tool, the pipe will have to be held with your hands.
• The exact coincidence of the mark on the pipe and the place of application of the blade is checked. In roller devices, you can control this moment by the trial turnover of the cutter.
• Pipes are cutting in a method that is suitable for this pipe cutter model.

Varieties

There are several types of cutters for metal.plastic pipes:

• Khrab cutter. Precision scissors that are suitable for cutting tubes with a diameter of up to 100 mm. Working parts. sharp metal blades. The part is fixed in the clip, the incision is performed.
• Roller cutter. A universal tool that has a C-shaped clip. Large or small videos are installed on different models. The former are suitable for cutting parts with a diameter of up to 125 mm, the latter. up to 50 mm. For cutting, you need to rotate the pipeline around your axis. The videos begin to move towards each other. Since the rollers rotate, cutting, not squeezing.
• Guillotine. Produces uniform cuts over the entire area of ​​parts. The output is flat sections without burrs, bumps. The blade can fall through the rotation of the valve or by the principle of the pistol.

A separate type of pipeline. a mechanism with a clamp latch. The principle of operation of this instrument is similar to a roller cutter, but the workpiece is clamped from all sides, which ensures reliable retention, reduces the risk of irregularities.

Rates of the pipe (

Device and principle of operation

The device of the pipeline depends on the type of tool. Main elements:

Tools can be supplemented with various mechanisms, devices that make them more efficiently, more convenient.

When using scissors for cutting metal.plastic pipes, the cut part is placed between the working parts of the tool, fixed. After that, the tube is cut.

Pipeline (

How to cut metal.plastic pipes correctly?

Cutting metal.plastic pipes requires experience. Only after cutting several tens of meters of material in the hands does confidence appear, and the movements are brought to automatism.

In the case of cutting pipes, the golden rule applies: “measure 7 times, cut 1 time”. It is better to spend the extra 30 seconds on checking the accuracy of the mark than to spoil the material with an incorrect cut

To get two from one pipe, you need to perform consistent operations:

• Make a mark where a cut should be made. It is important that the mark is strictly across the pipe, and not at an angle. Then the blade will pass perpendicular.
• Fix the pipe using a clip of pipeline. Some models capture the part with a spring, others are installed by lowering the rod, and in the third you just need to lay the material, and you will need to hold it with your hands.
• Make sure that the mark strictly coincides with the blade. If this is a roller pipeline, it makes sense to conduct the first turnover of the tool to check the accuracy of the installation.
• Cut the pipe: click the ends of the knot handle, click on the trigger, lower the roller roller roller roller roller roller roller roller shows. it all depends on the chosen pipeline model.

A distinctive feature of cutting metal.plastic pipes, in comparison with sharp polypropylene products, is that the accuracy in this case is very important. The polypropylene pipeline will be connected using high temperature, the plastic will melt a little and thus hide all possible inaccuracies.

But in the case of metal.plastic pipes, this will not happen. The ends are mounted in special cuffs and each mm of inconsistencies threatens with loose fit and the occurrence of leaks. We brought detailed instructions for the installation of metal.plastic pipes in the next article.

After the cut, you need to blow the resulting segment. The chips of aluminum or plastic, which remained inside the pipe after installing the entire system, can disable equipment that is connected to the pipeline, or cause a blockage to occur.

Preparatory stage

The preparatory stage involves stripping tubes from irregularities. To do this, it is more convenient to use a connecting clutch. After that, you can start cutting a metal.plastic pipe.

Cutting technique

You can not use tools not designed to cut metal.plastic. They can damage the material, leave irregularities, burrs. You also can not try to bend the pipe with your hands. To do this, use the pipe.

When cutting, you cannot make great efforts. It is important to control the process so as not to damage the part. The marks of future cuts can be left with a pencil or marker. You can not use sharp objects for this.

Technical features

Yourself, without certain skills, you can cut tubes with a diameter of up to 30 cm. If the dimensions are larger, you need to seek help from experienced installers. It is not recommended to cut parts in hot weather under direct sunlight. The material is heated, the cut mark will shift to the side.

It is important to read the technical passport of parts in advance if it was issued when buying. If it contains more plastic than metal, work must be carried out quickly. If the metal is larger, you need to choose a tool that will have the least friction. After cutting, the tube must be wiped with a damp cloth to remove dust, garbage.

If there is no pipeline under your hands, you can use a knife with an Sergey sharpening. You need to lubricate the blade in advance with machine oil, check its sharpness.

Due to the improved technical characteristics, metal.plastic pipes are very popular. To cut them, you can use an angular grinder, a knife for metal, a sharp knife or a pipeline. The latter option is preferable, since the sections will turn out to be even, without burrs. In addition to this, you do not need to spend too much effort.

Top models in the tools

In a box for instruments in the garage of a home-made master, a chimney-tower for metal-plastic pipes is most often found.

In order not to rack your head, understanding all the variety of tools in the construction departments, it is better to immediately familiarize yourself with the rating of popular high.quality models of different price categories and make a choice based on the experience of other customers.

Budget tools for home use

Among the inexpensive equipment for cutting pipes is the greatest demand by Sturm and WMT brand pipelines.

Practical equipment of the Sturm brand

Sturm. inexpensive and practical option for home use. The device is equipped with a hardened steel blade. Metal parts are covered with protective substance against corrosion.

Cheap. does not mean low.quality. Yes, budget models of pipelines do not have all the advantages of professional equipment, but they perform their main function

The handle is made of comfortable plastic with a non.slip surface. The cost of a pipeline from Sturm ranges from 400-450 r.

A brief video review of the pipeline of this brand in the next video:

Inexpensive solution to WMT

Another budget pipeline is produced by WMT. This tool will cost you no more than 300 r.

For such money, one does not have to count on additional functionality and other pleasant little things, but the device copes with its work within reasonable limits. It cuts metal.plastic pipes up to 42 mm.

Review of the budget model for minimum money:

Professional equipment for pipe cutting

Among professional tools, good reviews of Ridgit, Milwaukee and Kalde brands stand out with good reviews.

Popular among users RIDGIT pipelines

Ridgit is one of the leaders in the tools for cutting pipes. This manufacturer offers professional equipment that can work in any conditions. Ridgit PC 1375 ML is one of the most popular models of this brand.

Light (only 320 g) steel case and a strong cutter cuts off the pipe in just a few seconds. A wide range of working diameters (up to 42 mm) allow you to work with the most popular pipe sizes. The cost of the Ridgit PC 1375 ML starts with 3600 r.

Any experienced builder will distinguish a professional tool from “amateur”, simply holding it in his hands. And for this it is not necessary to understand the brands. If a thing is of high quality, it speaks for itself

Another popular model from Ridgit-TC-40. This is an automatic pipeline. It is equipped with an engine with a capacity of 0.75 kW and a lithium battery for 12 in. The device easily copes with pipes from 3 to 42 mm, just press the button.

There is such a pleasant addition as illumination for work in low.lit places. Since the metal.plastic pipe is multi.layer, the manufacturer took care of a special adapter for this type of materials. Automatic tool price from 18,000 r.

Reliable Milwaukee models

Professional Milwaukee tool from the USA. a guarantee of high.quality and reliable work for many years of service.

Model Milwaukee Prodex Tubing Cutter. a pipeline for small diameters. up to 25 mm. It is made of strong steel, does not lend itself to corrosion. A comfortable handle has a high level of ergonomics. But the price of a high.quality pipeline is appropriate. from 2300 r.

A rich selection of Kalde brand pipelines

Turkish brand Kalde offers a wide range of scissors for metal.plastic pipes. For example, Kalde (40-63)-a model for cutting large diameter pipes-from 40 to 63 mm. The blades are sharpened very well, the tool does not bend metal.plastic pipes, does not bite the edges and does not leave the chips.

All Kalde products are produced in accordance with European quality standards. The price for a specific model in stores is about 4300 r stores.

Simple rules for working with sewage

Theoretically, the disassembly of plastic sewer pipes does not cause difficulties. However, we recommend contacting specialists. The problem is that in apartment buildings it is extremely difficult to agree with neighbors. It is even more difficult to ensure that everyone adheres to hard agreements, without exception. For years, verified movements have for years. a matter of seconds are spent on replacing important elements. The pros still has the usual hearing, which determines that he will “trample” long before falling.

Dismantling of cast.iron sewage is complicated by itself. Especially when there are details whose excellent tightness was reached at the Soviet factory. With such a system, a direct road to specialists.

What to do in case of failure?

The dismantling of the pipeline is carried out to the permissible limit, because it is better to cut off the pipe until it is switching to the bell. At the same time, the butt of a cast.iron pipeline with a plastic will take much less time and time. It is better to cut the structure with a corner grinder, but if it is not, you can use a hacksaw for working with metal. The use of this tool can greatly increase the duration of the dismantling process.

If the dismantling failed, do not be upset, because you can simply purchase a specialized transition coupling, with which cast.iron and polymer pipes are connected.

If difficulties arise with cutting the pipe, it is possible to cut it half. Then you need to exit minor pressure or rotate so that the element bursts. If it cannot be removed from the bell, you just need to make a few incisions in a circle with an interval of 20 mm, after which it can be removed from the riser.

Before starting the connection of a cast.iron and polymer pipeline, you need to clean the first option from sulfur by heating. Removing the substance, you need to leave the pipes for several hours and let them cool.

Under the overhaul of the bathroom, one of the mandatory stages is the replacement of engineering communications. This process precedes the dismantling of the sewage left after the construction of the house. In modern houses, it is quite simple to do it. But in the apartments of the old fund you will have to work hard. Sewer pipes in them, as a rule, are made of cast iron, and are sealed in conscience. How to remove them without violating the operation of the drainage system in the whole house. you can find out about this from this material.

The standard sewage system in Soviet buildings consists of the following elements:

• the main riser passing between floors;
• shaped tap (cross or tee) for connecting the riser with the highway inside the apartment;
• Intra.apartment wiring.

The main riser is not a whole pipe, but a set of cast.iron sections, the length of each of which is equal to the height of the ceiling in the apartment. All these sections are connected to the same. At the upper end, each has a bell into which the direct lower end of the shaped lifting is started. The latter is connected in the same way with the following section. All joints are reliably sealed either with gray, or carbillas, or cement mortar.

Important! When dismantling the pipeline, the main difficulty is not to damage the bell of the section located below. She will remain in work after replacing the riser, so no cracks and chips should form in it.

The easiest dismantling option

The ideal option for replacing sewer pipes is to agree with the neighbors on the riser and replace the pipeline in several, or even in all apartments. In this case, difficulties with how to dismantle cast.iron sewer will simply not arise. The riser can be cut into pieces or in extreme cases, divorced with the help of a sledgehammer, not taking care of its safety.

Another good option is when the neighbors from above do not mind unlocking holes in the inter.story floor between your apartments and work in their bathroom. In this situation, you can remove the entire cast.iron section to the tee located above. But alas, it is not always possible to implement these options. The following is an action plan in the most difficult option. when the work site is limited only by one apartment.

We advise you to find out what breakdowns can occur with and how to eliminate them with your own hands.

Read: What are the advantages for bathrooms.

Methods of connecting metal.plastic pipes

You can connect pipes made of metal.plastic in two ways:

The first method, in turn, can be divided into two subtypes:

Installation of a metal.plastic pipeline using compression fittings

The installation of the pipeline can be carried out both according to the collector and trigeminal scheme. When using the latter fittings, you can attach to the pipes sequentially or cut after laying the pipeline.

Instructions for the connection of the pipeline using compression fittings:

• Alignment of the pipe, providing a direct even segment before and after a cut of at least 10 cm.
• Then the pipe is prepared, as described above. It is also necessary to provide the entry chamfer on the ends no more than 1 mm.
• A united nut is put on the pipe, and after it a split ring.
• They put the pipe on a moisturized fitting so that its end rests on the edge of the fitting with the entire plane.
• By hand, twisted on the fitting of the uniform nut all the way. The nut should easily go along the thread
• The fitting case is held with one wrench, and another key is reached by a rolled nut for 1-2.5 turns so that 1 or 2 threaded threads remain in sight.

Cutting technique

Self.cutting can be carried out with products with a diameter of 5 to 30 cm. So, if the product does not fall into these boundaries, it is best to contact professionals.

When conducting any such manipulations, it is important to remember the basic rules:

• Metal.plastic products are very sensitive to temperature, so that some problems may occur in hot or cold weather. The material is easily compressed and expands, which makes it difficult to determine the true size.
• Metal.plastic, like polypropylene pipes, can be cut by any improvised means. But in order to avoid various negative consequences, it is best to do this with special tools.
• An excellent tool is a special self.staining knife. But if it is planned to carry out work to replace one section with another, it is better to abandon the tool in favor of scissors.
• The material is quite fragile. The attachment of too much effort is fraught with the appearance of cracks or specific deformations. The permissible load can be seen in the passport of the product that was issued at the time of installation of the water supply.
• The type of cutting directly depends on the shares of metal and plasticity in the product. If the metal is larger, then when cutting friction should be as few as possible. Otherwise, a large fraction of plastic implies a greater intensity of work with great friction.
• Before starting work, it is necessary to make sure that water or gas does not go through the pipe. You need to block all the taps and wait a bit.
• After completion of work, you need to cleanly clean the inside of garbage, which can lead to bolts or break specialized equipment.

The use of electronic cutting tools is not considered reasonable, since the specifics of the material for this is not designed. You can cope with manual means.

Classification of pipelines according to other parameters

For bending pipes made of metalloplasty, you can use different types of pipelines

• Circiding methodology, when the design is located between the motionless and rolling rollers of the device. The gradual effect on the pipe using the outskirts of the stand-up movements practically excludes the possibility of deformations;
• winding methodology, when clamps press the structure to a rotating bending roller. In order to avoid crushing the pipe, Dorn should be inserted inside it. a metal rod of the corresponding section, which has a rounded end. Dorn can be flexible, made from several sections interconnected.

Briefly about the water disposal system

The sewage device is a description of all components and the principle of functioning of the system as a whole and by separate nodes. Divided:

Internal

• Plumbing devices (sources of dirty water formation): toilet, bidet, washbasin (kitchen sink), bath (shower), washing and dishwasher.
• Siphons and compound elements (transition couplings).
• Diting pipes Ø 30-50mm. For the toilet 100mm.
• Transition elements: fittings and couplings, check valve, audit.
• The main riser is an element that collects in one sewer pipe, drains from all sources. The diameter of the collector should not be less than 100mm.

Installation of the sewage system indoors is regulated by regulatory documents: SNiP (sanitary norms and rules) 3.05.01–85 “Internal sanitary.technical systems”.

Outer

• Stopping highway from pipes Ø 100-200mm (for individual housing).
• Overflowing (observation) wells.
• Clushes, fittings.
• Stock receiver (cesspool, septic tank, bio.cleaning station).

Sewer installation outside the building is regulated by SNiP 2.04.03–85 “Sewerage. External networks and structures “.

Top models in the tools

In a box for instruments in the garage of a home-made master, a chimney-tower for metal-plastic pipes is most often found.

In order not to rack your head, understanding all the variety of tools in the construction departments, it is better to immediately familiarize yourself with the rating of popular high.quality models of different price categories and make a choice based on the experience of other customers.

Budget tools for home use

Among the inexpensive equipment for cutting pipes is the greatest demand by Sturm and WMT brand pipelines.

Practical equipment of the Sturm brand

Sturm. inexpensive and practical option for home use. The device is equipped with a hardened steel blade. Metal parts are covered with protective substance against corrosion.

Cheap. does not mean low.quality. Yes, budget models of pipelines do not have all the advantages of professional equipment, but they perform their main function

The handle is made of comfortable plastic with a non.slip surface. The cost of a pipeline from Sturm ranges from 400-450 r.

A brief video review of the pipeline of this brand in the next video:

Inexpensive solution to WMT

Another budget pipeline is produced by WMT. This tool will cost you no more than 300 r.

For such money, one does not have to count on additional functionality and other pleasant little things, but the device copes with its work within reasonable limits. It cuts metal.plastic pipes up to 42 mm.

Review of the budget model for minimum money:

Professional equipment for pipe cutting

Among professional tools, good reviews of Ridgit, Milwaukee and Kalde brands stand out with good reviews.

Popular among users RIDGIT pipelines

Ridgit is one of the leaders in the tools for cutting pipes. This manufacturer offers professional equipment that can work in any conditions. Ridgit PC 1375 ML is one of the most popular models of this brand.

Light (only 320 g) steel case and a strong cutter cuts off the pipe in just a few seconds. A wide range of working diameters (up to 42 mm) allow you to work with the most popular pipe sizes. The cost of the Ridgit PC 1375 ML starts with 3600 r.

Any experienced builder will distinguish a professional tool from “amateur”, simply holding it in his hands. And for this it is not necessary to understand the brands. If a thing is of high quality, it speaks for itself

Another popular model from Ridgit-TC-40. This is an automatic pipeline. It is equipped with an engine with a capacity of 0.75 kW and a lithium battery for 12 in. The device easily copes with pipes from 3 to 42 mm, just press the button.

There is such a pleasant addition as illumination for work in low.lit places. Since the metal.plastic pipe is multi.layer, the manufacturer took care of a special adapter for this type of materials. Automatic tool price from 18,000 r.

Reliable Milwaukee models

Professional Milwaukee tool from the USA. a guarantee of high.quality and reliable work for many years of service.

Model Milwaukee Prodex Tubing Cutter. a pipeline for small diameters. up to 25 mm. It is made of strong steel, does not lend itself to corrosion. A comfortable handle has a high level of ergonomics. But the price of a high.quality pipeline is appropriate. from 2300 r.

A rich selection of Kalde brand pipelines

Turkish brand Kalde offers a wide range of scissors for metal.plastic pipes. For example, Kalde (40-63)-a model for cutting large diameter pipes-from 40 to 63 mm. The blades are sharpened very well, the tool does not bend metal.plastic pipes, does not bite the edges and does not leave the chips.

All Kalde products are produced in accordance with European quality standards. The price for a specific model in stores is about 4300 r stores.

Conclusions and useful videos

With such a wide range of building tools, both manual and electrical tools choose a pipeline that will cope with its function, but will not cost more than the heating system itself, is a very real task.

Knowing what varieties of devices, as well as having become acquainted with the most popular models, you can easily choose and buy equipment for working with metal.plastic pipes.

Want to supplement our material with useful Комментарии и мнения владельцев or share our own experience cutting metal.plastic pipes? Or want to tell about the pros and cons of your pipeline? Write your opinion and recommendations under this article, add unique photos of your model of pipe scissors or the cutting process itself.

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