How to cut large diameter polypropylene pipes
This is small weight, high elasticity, heat resistance and zero receptiveness of corrosion, which is very important for the water supply. This material is a type of plastic, but with a low density, thanks to this it is so easy
Singing polypropylene pipes is easy, having a minimum of the tool that we will talk about further, as well as fittings (special small details of various forms made of polypropylene), which act as connectors.
If we talk about the main advantages of polypropylene materials in more detail, then the following points are distinguished:
- Durability-the life of such a cavity, if cold water is supplied through it, is 50-60 years, in the case of hot water-30-40 years. These indicators are much higher than that of all kinds of analogues.
- Elasticity. polypropylene cavities have pronounced elastic properties. This means that such material reacts well to compression and expansion due to changes in the water temperature inside the water supply, and during installation, the risk of spoiling the pipe, t, reduces the risk.to. She bends well.
- Lightness. this material weighs little, especially in comparison with metal.plastic pipes and even more so by steel.
- Simplicity of installation. as mentioned above, the spike of pipe from polypropylene is so easy that even a person who had previously had any experience with plumbing and similar materials will cope with this.
In addition to the general characteristics of waterproof water materials, another factor should be known. heat resistance. The fact is that polypropylene is a type of plastic and there is a temperature limit inside the system, in which the site is damaged or melted.
The device for welding polypropylene pipes Elitech SPT 800 The most affordable market
The maximum operating temperature of PP pipes is 140 degrees Celsius. This means that if the water is too hot, there is a risk of violation of the integrity of the material and even the spike of polypropylene pipes (connection place) may not withstand.
But when creating the pipes discussed, they are assigned their own marking, which indicates specific properties, such as: heat resistance, wall thickness, acceptable pressure in the system and area of application. Thus, two common markers stand out:
- PN 20. the most popular type of pipes, withstands a pressure of 20 atmospheres and a temperature of 95 degrees Celsius. These indicators allow the use of a water supply in the laying of hot and cold water, but not in heating systems.
- PN 25. This type of pipe pipe is great for laying heating, as it easily copes with a temperature of 95 degrees and a pressure of 25 atmospheres. Such indicators of heat resistance and strength are achieved thanks to partial reinforcement, due to this the material is not deformed due to temperature changes.
Another property of polypropylene pipes is the ability to lengthen with an increase in temperature inside the water supply. It looks like sagging long areas of water supply, or wave.shaped deformation. For these, the reason should be properly soldering polypropylene pipes and it is extremely recommended to make long straight fate in the water supply, but use compensators (pipe insertion in the form of the letter “P”). Then, with the thermal lengthening of the “legs” of the compensator, the pipe is not deformed.
Installation of polypropylene pipes with your own hands
Today, it is not a very difficult thing to install polypropylene pipes with your own hands, especially since this can largely save the family budget funds.
However, when installing polypropylene, it is worth observing a certain sequence of actions and some technical rules in order to prevent errors in the process.
We describe in more detail the stages of installation of polypropylene pipelines.
- Familiarization with theoretical material, having thought of laying polypropylene lines at home, first of all, you need to get acquainted with information about polypropylene, with a type of pipe product from this material, as well as with installation methods. The course of the implementation of high.quality installation of polypropylene pipes will largely depend on theoretical knowledge.
- Calculation of the pipeline diagram of how to start mounting communications from polypropylene, you must first draw up a detailed scheme of the future system. What will such a scheme give? According to the plan, you can easily calculate the required number of the following materials:
- devices and important components of the mounted system;
- the length of polypropylene pipes;
- couplings and adapters;
- corners and crosses;
- locking reinforcement;
- other fitting elements.
At this stage, based on individual needs, it is necessary to choose the right pipe from polypropylene and all structural elements (we talked about the types of pipes and the necessary tools above in the article).
- According to the scheme, the pipes are cut into segments of the required length;
- The ends of the pipes are cleaned from burrs;
- If a reinforced type of polypropylene has been chosen, then the ends are mandatory.
- On the wall, markings are made for fasteners of polypropylene pipes;
- The with a pedorator is drilled with dowels, the distance between which should be 1 m;
- The dowels will subsequently install clamps to fix the pipeline.
The implementation of this type of work has the following features:
- On the desktop, a welding machine is stationarily installed and prepared for work;
- All constructive elements of a certain section of the system are selected;
- their preliminary soldering is made, in other words, on the desktop is connected into a single whole section of the pipeline, and there should be as few turns and tees and tees;
The finished section of the polypropylene pipeline is fixed with special clamps on the wall;
- In this priority, installation and subsequent sections of the system are performed;
- For soldering on weight, only the connection of the fixed areas and the connection of all system devices will remain.
- As you can see, most of the works on the combination of polypropylene pipes with their own hands occurs in a stationary position, and this, in turn, will not require the cost of great physical efforts, and the combination of elements will occur more accurately and qualitatively.
Types of pipeline equipment
In stores, a tool for cutting polypropylene pipes (PP) is offered the most different. These are both manual mechanical and electrical devices.
Each of them has its own virtues. Choosing the most suitable equipment should be based on the volume of work and their complexity.
When choosing equipment for cutting polypropylene pipes, the main attention must be paid to two points:
- The blade must be made of alloy steel.
- Each pipeline model has two indicators. the minimum and maximum pipe size. This range should be selected so that it is enough to perform work.
The case of the case of such equipment is usually made of metal. And best when it is aluminum, not steel. A pipeline with aluminum handles is light by weight, work will take less strength to them. Soft polypropylene pipes do not require unnecessary efforts when cutting. Aluminum tool will cope with arising loads without problems.
A pipeline can have replaced or irreplaceable incisors. Sooner or later they will be worn out. In the second case, the tools will have to be bought again. However, if the cutting device is needed for one.time work, it is better to take a cheaper model with an unprofitable equipment.
Option #1. Guillotine
The simplest in design and the exact quality of the cut pipeline equipment is guillotine scissors. They can be manual and electric drive. Structurally, this is a blade that descends onto a pipe from polypropylene, which makes an even and strictly perpendicular to the longitudinal line.
Most of the manual guillotine is designed to cut pipe products with a cross section of up to 70 mm. But some models are subject to diameters of 100-150 mm. This is enough to perform installation work at home. Everything that is higher is already referred to as industrial equipment.
The knife as they press on the soft polypropylene easily open it. Pipe deformations do not occur due to the severity of the cutter coated with teflon and the smoothness of its movement. After the cut of polypropylene, additional processing of the end is no longer required. The pipe is completely ready for soldering and using fittings.
The only drawback of the guillotine that is worthy of mention is the low speed of work. Each time the blade needs to be returned to its original position by prolonged twisting the rod. But the cut is perfectly even, and for this you can twist the handle. However, if it is planned to cut polypropylene pipes, then it is better to choose a different type of pipeline.
Option #2. ratchet
This class of a pipe.cutting tool in shape resembles ordinary scissors with two handles. Only their blade is on one side. The second half is made in the form of a semicircular stop where the pipe should be placed during cutting.
They are equipped with a ratchet mechanism (rattle) so that the knife moves smoothly, and at the same time they had to apply efforts to a minimum.
The main disadvantages of this cutting equipment are a high probability of obtaining a oblique cut and a possible crump of pipe. In fact, these are big manual scissors. You need to use them skillfully. Our site has a detailed article on how to use this type of pipeline. Read more. follow the link.
By inexperience, the slightest slope in their hands leads to the formation of a crooked end, which then has to be undermined. And if the pipe is also crumpled, then it will need to be straightened out from the inside with a calibrator.
The same type includes pistol pipelines with a crack. It is much easier to work with them. There are very little efforts for cutting, and the cut is more even.
The knife return to their original position occurs at all as a result of pressing the button due to the spring. This is the best option for cutting polypropylene pipes with thick and more solid walls.
Option #3. Roller
The next type of pipeline is roller. He has one or more videos in the design. This tool looks like a hook. There are movable wheels inside this hook, on which the cut pipe rests.
The cut itself is produced by another cutting-knitting roller extended from the handle on the telescopic extension cord.
Cutting polypropylene occurs as a result of turning the roller pipeline around the pipe clamped in it. It is important to turn it so that the fishing line for the cutting of the cut in plastic does not go away from the starting point.
The cutting video should end the circle in the same place where it started it. If the pipe walls have to be cut thick, then the turnover around the pipe will need to be done several times, gradually pressing the cutter deeper into plastic with turning the screw on the handle.
With proper use and accurate holding of the knife along the line, as a result of the use of a roller pipeline, it turns out perfectly even smooth. By this indicator, it is comparable to the guillotine.
But it cuts the pipes much faster, but it costs more expensive. Plus the slightest inadvertent shear of the knife to the side leads to the appearance of burrs on the site of the cut, which are subject to further removal.
When cutting polypropylene with a roller pipeline, it is impossible to excessively tighten the handle, pressing the disk-knife to the cut surface too much. Microsics can form in plastic, which will reduce the strength of the pipe and can lead to the appearance of chips at the end.
Read also: How to build a hexagon in a compass
Everything should be done smoothly and slowly. This is especially true for working with thickness and with large in diameter by sewer pipelines.
Other tools for cutting plastic pipes
They are used occasionally, when there is no pipeline under the hand:
- Corner grinder. for cutting pipes you will need a cutting disc for the alloy. The main point in the operation of a corner grinding is a clear regulation of effort, it is impossible to press the tool very much on the tool.
- Electricity is a more successful method in the absence of special scissors.
There is a great opportunity to get a scythe, because for greater accuracy during operation, the pipe needs to be turned several times.
What is categorically not recommended to cut pipes:
- Ribbon saw. its blade moves very slowly and if it is not insufficient enough, the possibility of damage to the internal diameter of the pipe is great, which leads to chips and cracks.
- Circular machine. Since plastic pipes are flexible, pushing them into the machine often causes a pipe shift and blow, which is unsafe for a person producing a cut.
Polypropylene pipes come on sale in the form of bays or straight segments, the length of which is achieved 12 meters.
It is clear that during installation it is often necessary to cut them with scissors for cutting polypropylene pipes, since such huge segments for the creation of water supply and heating systems do not approach. A pipe of suitable length is cut off and then welding is underway.
How to joint Polypropylene Pipe. PPR plastic pipes. Polyfusion welding
Comfortable and ordinary in application when working with one hand, but if the cutting is intense, then the hand will quickly get tired;
Cut polypropylene pipes with such an inventory is one pleasure, since the cut speed is quite the highest. from 4 to 7 seconds. But there is a defect. a limited spectrum of pipe cutting. Such inventory can only be cut pipes up to 42 mm.
This cutter for polypropylene pipes can cut pipes with a diane of 63 to 350 mm. He has blades covered with Teflon, and they cut products at an angle of ninety degrees, while leaving a flat cut, without burrs. The blades simply change or drag.
Such a method of cutting has one enormous advantage.
It is not necessary to process the surface of the pipe before welding after the cutting off, because the cut goes smooth and even, there are no deformations.
The process of cutting with guillotine. Around the 30 to 60 degrees of the pipe mounted in the sector, the guillotine blade installed on the wheels is swayed. After the cut of the blade under the influence of a rotating handle-vinta goes into the pipe to the depths of the entire diameter and cuts it out finally.
Which tool is better to choose?
When choosing the type of pipeline for polypropylene pipes, you must start from how intensely you will use it.
If it is needed at a time, then roller scissors and precision scissors are suitable for this. But if it is necessary to cut pipes often, then the battery scissors are best suited for these purposes. Also for this you will need a guillotine pipeline, especially if you deal with the pipes of a huge diameter.
Read also: Fitings for polypropylene pipes: marking, views, selection
But all the scissors are tormented by the same flaw, when cutting, the blade can go a little to the side. On small dialects, this is not such a terrible phenomenon, but when working with the pipes of huge diameters, such a cut needs to be used. That’s why it is better to take a guillotine pipeline for pipes with large diameters.
Selection of a particular type of polypropylene pipes for certain conditions
For cutting pipes from polypropylene material, scissors are selected in accordance with the specific value of their diameter value. Today, manufacturers represent the material of the pipes in four versions:
Read how to cut large ceiling plinths
Important! The choice of type of polypropylene pipes should be made carefully, taking into account the temperature and water pressure in the system, since these factors directly affect the life of the pipeline!
In addition to various polypropylene pipe products, manufacturers produce many fasteners and composite elements. The latter are often equipped with extruded brass inserts with internal or external threads. Metal inserts allow you to easily install dense connections and switch to other materials.
Remember! Only professional, high.quality modifications of the cutting tool are able to effectively cope with sharp polypropylene pipes, regardless of their thickness and diameter!
Conclusions and useful videos
In order for the assembly of the pipeline to be crowned with success, you need to choose the tool for cutting pipe from polypropylene correctly. Not every pipeline is suitable for such work.
They still need to learn how to use it, having previously tested it on an unnecessary piece of the pipe. The video reviews below will definitely help you navigate in choosing this equipment.
Review of various scissors for cutting polypropylene pipes:
Comparison of different methods of cutting pipes from plastic:
How to use a ratchet pipeline:
Without a pipeline in hand, it is difficult to install a polypropylene pipeline, cutting the pipes will take a lot of time. It is necessary to purchase a particular version of cutting equipment. However, choosing it in the store should competently. And before operation, it will not hurt and carefully study the operating rules attached to the tool, after all, this is a specialized professional tool.
Look for a pipeline for home use? Or there are already experience working with similar equipment? Please leave your Комментарии и мнения владельцев, share your experience, ask the article in the block located below.
Scabble for metal.
The most common way. The only drawback is that the cut can turn out to be a curve to avoid this, it is advisable not to cut it right away, but to turn the pipe 3-6 times. It will look approximately like this:
The fastest and most convenient way after scissors. But the cut can also turn out a little oblique on sewer pipes with a diameter of 50 mm. Here it is also desirable not to cut right away, but turn the pipe 2-3 times. If you need to saw off the pipe with a diameter of 100 mm or more, then first you need to drill a thin drill (2.5-3 mm) a number of holes to insert a jig.
This method is suitable only for thick.walled water pipes.
If the cut is still not very even or not straight, the end of the pipe can be treated with a grinding skin. And at the end of the sewer pipe for better docking you need to remove the chamfer, this can be done with a knife, but it is more convenient for the same grinding skin.
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It is easier to cut off a corner grinder with a disc 0.8-1.0 mm, with its help you can clean the end of the burrs
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Pipes for non.pressure sewage. high.quality and inexpensive pipes in stock.
I cut polypropylene pipes with scissors included in the soldier. There are no problems from 20.25, but 32 pipe, especially in an inaccessible place to cut it difficult.Working with 40 pipe is planned.I ask you to respond to practitioners who solves or solve this problem. If there are more powerful scissors, write a brand and price.Or maybe there is something else for these purposes. Thanks for any information.
I have been using the pipes for two years for two years by scissors ROCK 42 TC “before that there were 35 s offices, but they worked less than six months
We come only when people need us.
Tvmaster wrote: an ordinary knife also steers.
We come only when people need us.
And by the way, if such pipelines cut the pipe crookedly, then this is a sign of their poor quality or you need to know some tricks. I suspect that the thinner the knife, the more perpendicular. And my Chinese pipeline has about 3.5 mm with a symmetrical sharpening. Cuts crookedly. 2TEHNIK-SAN don’t look at what form sharpening in branded knives?
2us sharpening is symmetrical, but the blade itself is not straight, like the Chinese, but a “broken” fishing line for a cutting trimmer and this angle begins to enter the pipe wall during cutting
We come only when people need us.
Tvmaster wrote: an ordinary knife also steers
At first I did not have a pipeline (buying right away. I didn’t have enough mind. And the soldering iron rented). That’s just a hacksaw and used. At least 40% of the working time was spent on preparing the pipe.
Encore, by the way, in inexpensive pipelines appeared. Including pistol type. I bought myself such. Up to 35 diameter. 315.
True, from the front time it was not possible either, but, having trained a little, it was possible to get an affirmative even cut.
t.e. As I understand it, there are no secrets, except for a normal knife? As only in a dozen store, choose normal. come from your pipe? And the separation of the inner diameter must be done before welding? 2imsten_ What is the training? somehow you need to hold the pipe somehow?
Perhaps yes. And if the very first scissors of this model-model “Curved” are the chances that the other instance will be better to strive for zero. That is, I want to say. do not torment yourself and sellers, sorting out a dozen scissors from one box
US wrote: Disfectance of the inner diameter
You can do it, you can not do it. When I do for myself, zenky both in external and inner
I want to say right away. I use a “gun”. Firstly, it is necessary to withstand the perpendicular position of the pipe (in relation to the knife). Secondly, I get an even perpendicular axis cut only if you do not choose the full stroke of the ratchet at each knife feed (squeezing the handle). But you need to act slowly (one or two click of a ratchet at a time)
Perhaps this will seem funny to professionals and they succeed immediately. But I have to pay many times more for Rocut than for Encor, the toad did not allow.
Installation of the external sewage network
The external sewage system begins at the place of the pipe out of the structure (building), and ends with the arrangement of a septic tank or other device for cleaning and collecting masses.
- outline the location of the sewer pipeline on the site, indicating the location of the drainage well and septic tank;
- purchase all the required materials and pipes with a diameter of 110 mm, given that the minimum distance from the building to the place of gathering is at least 50 meters.
The laying of the outer sewer network is carried out according to the previously thought.out scheme
There are some rules for laying the external pipeline to which:
- digging a trench, a width of a slightly larger diameter of the pipe;
- device of a sand-gravel pillow at the bottom;
- additional laying of the geotextile layer (if necessary);
- Installation of viewing wells when changing the direction of the sewer pipeline, with significant height drops, on an even section after 6-12 meters.
After laying pipes, the trench is instilled in a similar sequence. It is advisable to avoid various bends or turns of the track to prevent the risk of blockages. If necessary, you can use auxiliary details: plugs, contours, crosses, wiring, tees, conclusions and others. It is necessary that the fittings are made of the same material as the main part of the pipeline.
How to cut the pipe along
Is it possible at home without special equipment to cut along with the smoothness of the PVC pipe with a diameter of 100 mm 3 m long ?
Комментарии и мнения владельцев of users:
In order to cut exactly the pipe along, they usually use special equipment called a bracelet with a slot.But as I understand it, you do not have such equipment and you want to cut the pipe at home.This can be done more evenly and carefully, but not everyone has such a tool at home.In this case, you can use the usual file.The cut thanks to the jigsaw and the file is quite even, but you will have to spend a lot of time on it.The fastest way is the use of corner grinders, but the cut may not be as smooth as you would like.
I understood the question like this: nothing, but how to cut. I did it like that you put the pipe in an even place, packed it on both sides (with several segments of a massive corner), it is desirable for the bars along the entire length so that the pipe does not spin about. You note by the eye of the top and a lace of soaked in ink you beat off a flat fishing line for a trimmer. You count the length of the circle, make a template from a rope along the length of half a circle you tie the cloves and Dapeie should be clear. From the already drawn braid fishing line, you mark several points on the other side. But cut anything, I am a jigsaw.
Output two points and through them pull the rope. In order for the trimmer fishing line to be clearly visible and not clogged with sawdust, glue paper tape. One of its edge on a stretched thread and on this edge will go a cut. You can cut it with a jigsaw, but if it is not, then with a canvas from a hacksaw for metal, wrapping the edge of the canvas with a rag or foam, to keep it more conveniently.
I have not tried this method yet, but I think you can do it like that. We take a sheet of paper A4, A3 depending on the length of the pipe, you can use the newspaper, it has a geometry is also not bad. Cut off the length of the pipeline circumference, draw a fishing line for a trimmer in the middle of the sheet and wrap up the pipe combining the edges of the sheet. Combined angles are points of the straight section, from the opposite side it is a point drawing a straight line. With this method of mowing fishing line, the axis of the pipe axis will be strictly parallel.
Cutting PVC with string!!! (tips and tricks Tuesday)
Take the pipe, take metal.Corner, larger or equal to the length of the pipe, fix the corner to the pipe and saw (the corner will not give the disk ‘walk’). Work in the same way with a sheet metal
Read How to cut a corrugated stainless pipe
Maybe someone will come in handy. I had to make a prefabricated pipe to the boiler in a greenhouse. Well, they cut off a piece in L-250 mm pipes, cut along the wall, expanded the cut place, welded a piece of L-250, h- equal to the optimal diameter, then welded to the main pipe, a pipe with a ‘skirt’ happened
Tools for cutting metal.plastic pipes
In the process of cutting pipes, the following tools will come in handy:
It is important for the master to determine in advance how he will cut metal.plastic pipes. The most important tool on the list is scissors. Everything else is necessary for special preparatory work.
In the process of cutting, you do not need to apply a lot of effort. It is enough to fully control each movement. If you do not pay the control of proper attention, you can easily cut off the excess part.
If in the process of cutting it is necessary to bend the product, it is not recommended to do it with hands. So you can easily ruin the aluminum layer that is inside. It is better to take a professional pipes and perform an operation with its help.
The use of unsuitable tools when working with one site can affect the entire network as a whole, which will lead to large renovation costs.
Important! Special scissors are usually in a set for welding. But they can be purchased separately. The price of this tool is not so high as to save on it.
Before proceeding directly to cutting, it is necessary to very clearly measure the part where the unit will be separated. For this, a roulette or ruler is used, as well as a bright marker. A faded pencil can simply not be seen, especially if the room is not enough lighting. The mark can be made with a knife, leaving a scratch.
During operation, pieces of plastic and aluminum can fly in different directions. Therefore, it is necessary to use protective equipment in the form of glasses and special clothing.
How to cut a profile pipe along or across: marking and cutting methods
In household households, profile pipes are widely used in the manufacture of greenhouses, greenhouses, canopies to protect automotive equipment from atmospheric precipitation and other designs. When working with this material, it is useful to know how to cut a profile pipe along the line or across with the most accurate angle.
Among the large number of construction cutting tools for metal, the leader in speed, simplicity of cutting and economy is an angle grinding machine (angular grinder), which is often present in the instrumental kit of any home master. To cut a profile steel pipe using a corner grinder, a regular metal disk will be required and strict compliance with safety rules. the destruction of the disk for segments at high speed of rotation can lead to serious injuries.
How to cut off the profile pipe across smoothly
Most often in the household, a rectangular or square trumpet metal is used with a wall thickness of not more than 3 mm, and cutting into separate segments is necessary when carrying out work on assembly welded frames.
To correctly cut the pipe, use additional devices to designate and mark the cut line, some of the devices perform the functions of the supporting face for the cutting disk.
Nuances of work with a rectangular section
Rectangular harvesters are much easier to cut along and down with any corners than cylindrical elements that are difficult to keep in a motionless state on a flat surface. The transverse circumcision of the blanks at any angle does not represent much difficulties. the fishing line for the trimmer of the desired angular slope is carried out on the lateral face and always coincides with the calculated (round elements require the use of special patterns calculated on the computer, to combine their faces at an angle other than direct).
The thickness of the walls of the metal profile when used in household farming rarely exceeds 5 mm. it is easy to cut using an angle grinding machine with any metal disk.
Which tool is used
As noted above, the main tool for cutting metal parts in domestic conditions is an angle.grinding machine, in its absence, you can use a hand hacksaw for metal or an electrician, which can also cut metal materials with a special canvas with a diamond coating.
For cutting corner grinders, cutting electric contest discs are used not intended for grinding operations. As an auxiliary tool, roulette, a metal ruler, various types of clamps, pencils and markers for applying marking will come in handy.
The use of a paper sheet is a simple method of marking a rectangular or square profile for accurate circumcision at an angle of 90 or 45 degrees towards its axis.
To make markings for transverse cutting at an angle of 90 degrees, take a sheet of paper and wrap them with the pipe to the exact combination of the edges, after which they are glued. With this method, a fishing line for a cutting trimmer is very clearly visible, unlike it with a pencil or marker along the edge of the template.
After that, the profile is cut along the template edge alternately from all sides, trying to prevent complete cutting of the finish areas. this can lead to the blows of the disk on sharp corners and its destruction.
A sheet of paper can be placed on the side walls of the pipes of a rectangular or square section. To do this, the paper sheet is folded diagonally, and the resulting angle of 45 degrees is applied to the side walls and make the corresponding markup. In order for the side lines to be at the same level, the sharp angle is applied to the transverse line placed at an angle of 90 degrees to the axis, which is previously applied in the above way.
It is very convenient to cut a profile pipe using a special template, which is an analogue of a construction rod for cutting building materials at different angles.
To do this, the above or in another way make a metal template from a profile pipe cut along a piece, it can be designed to get a straight or angle of 45 degrees.
To cut the metal profile, a template is applied to it and drawing a fishing line for a trimmer, according to which then the cut is made. In other cases, the template is held and a corner grinding is held for a trimmer on the surface of the workpiece, trying to avoid strong pressing the side surface of the disk to the applied metal template. Then the template is removed and cutting is continued according to a well.noticeable depression on the faces of the workpiece.
Using the template, you can get a very flat fishing line for the trimmer of the cut, if you do not hold it manually, but fix it on the workpiece with a clamp or fastener bolts.
For the independent manufacture of fasteners in the side surface of the P-shaped platform, the hole is drilled and welded at this point on the outside the unit, into which the bolt is screwed.
To fix the template, put it to the cut part and screw it up, pressing the template surface to the workpiece, after an angular grinder with a metal disk, a cut is cut, slightly touching the guide edge.
How to choose scissors?
Together with high.quality indicators of scissors for plastic, the price of pipes that can be cut with their help affects the price.
A cheaper option are scissors capable of cutting pipes with a diameter of 35-42 mm. A tool designed for large sizes (63-75 mm) will cost a little more.
Thus, scissors for cutting pipes are chosen not only by the method of use, but also taking into account the magnitude of their diameter. All materials are presented in four categories:
- PN 10. designed for installation work on or updating cold.type water supply systems or for a warm floor, where the maximum temperature is 45 degrees, and the pressure does not exceed 1 MPa.
- PN 16. used for laying water systems, with increased load, as well as for the installation of centralized type heating pipelines with low pressure indicators, not more than 1.6 MPa.
- PN 20. a universal type pipe, is used for installation work in the device of hot or cold water supply, provided that the maximum temperature will not exceed 80 degrees, and the pressure will correspond to 2 MPa.
- PN 25-a special type of pipes with a reinforcing coating with aluminum foil, which provides the ability to withstand high water temperatures (90-95 degrees) at a pressure of 2.5 MPa. A similar variety is used for the device of hydraulic devices and central.type heating systems.
note! Only instruments of a professional type can ensure high.quality cutting pipes from polypropylene.
Manual tools are cheaper than devices with an electric drive, however, both are endowed with high accuracy of cutting, durability and strength. The main criterion for the choice should be the convenience of use and the functionality of the mechanism.
Choosing a tool for cutting, it is worth giving preference to brands of well.known manufacturers, since cheap fake production of China does not differ in durability.
The use of the tool
Cutting polypropylene pipes is performed using specially designed tools for this. Among them it is worth highlighting scissors for plastic pipes. The presented cutting devices are divided into two main subspecies. this is:
Each of these tools is used with strict orientation on the diameter of the pipe product.
Guillotine, as one of the varieties of the cutting tool, is equipped with long handles, which are covered with a rough coating for the convenience of holding.
The product is also equipped with a lever fragmentation mechanism, and its blade is made using a special stainless steel of hardened type.
The product provides the separation of polypropylene pipes with a diameter that hesitates from 60 to 350 mm.
As a rule, the blade is covered with Teflon spraying, due to which it turns out a perfectly even cut without a zazubin.
Scissors for metal.plastic pipes despite a number of differences between species have one similar structure and consist of:
- blades made of stainless steel, which provides high.quality pruning;
- handles, equipped with rubberized inserts, for the convenience of girth and reliable capture of the pipe;
- supports that provide accurate cutting at the required right angle;
- gear racks, which greatly simplifies cutting;
- buttons or devices that controls the opening of the cutting edges if necessary;
- a special lock required when storing a product in a closed form.
Device and principle of operation
The device is used in the installation of pipelines for water supply and the heating systems of the house.
Cutting blanks is performed before the start of the coupling welding. Scissors for cutting polypropylene pipes are collected two or, in some cases, three case parts.
In the finished form, the product is a complicated system that is able to provide maximum force concentrated on the cutting edge.
In this case, the handle can easily be compressed with one hand. Design features of the tool are selected with focusing on the value of the diameter of pipes subject to trimming.
So, with a diameter of 1/2, 1 or 2 inches, a product can be used, which looks like classic household scissors, but subject to some changes.
One side of the tool is considered the supporting (case) at one end there is a convenient hilt, and on the second V-shaped profile.
The profile performs the function of the base surface for the cut off the polypropylene pipe. Thanks to the second handle, through a system consisting of several levers of the ratchet, a working blade is set in motion.
To carry out the cutting, the product is brought by the supporting surface to the pipe section, after which, by means of intense pressing, cutting is performed on the handle.
In most modifications of the device, the ratchet mechanism works in several stages, this allows you to evenly cut pipes with various diameters setting the minimum effort to the handle.
A special design of the tool allows, if necessary, easily replace the cutting blade. The most popular scissors for cutting pipe from polypropylene are the products of manufacturers such as General, Reed or Rothenberger.
All modifications of the equipment produced for cutting thermoplastic polymer propylene pipes are divided into several structural options.
Precision scissors-have a fairly simple, reliable crack-cutting mechanism. With this tool, you can dissect and fragment products with a diameter of 3.0–41.5 mm. The cutting tool has a steel blade (alloyed brand) with a jagged rail that allows you to perform quite light, even cuts of propylene pipes.
Using precision scissors, you can easily cope with one hand, however, with large volumes of fragmentation of the material, fatigue of the muscles of the hand, forearm and shoulder rapidly increase. Buying a tool involves the design of an annual guarantee that is valid only with the competent use of scissors.
The battery pipeline is an automatic tool for superbust (a maximum of 7.0 seconds), neat cutting of propylene pipes, medium thickness (8.0–29.5 cm). Compressive power of cutting surfaces provides a small, powerful electric motor.
Roller pipeline. convenient to work modification of the cutting polypropylers of the tool. Despite the uncomplicity of its design, the employee can perform an absolutely even cut. In this case, cutting of pipe elements is carried out at an even (90 degrees) angle.
Attention! Any retreat in the process of cutting from an even, right angle (90 degrees) can provoke a breakdown of the tool or deformation damage to the lines of the cutting!
Roller pipeline instruments are with telescopic elongation. Such tools are equipped with a ratchet and, in general, resemble ordinary scissors. This pipeline has, on the one hand, the C-Formen Walking, where the trimmed pipe is placed. The opposite side contains an acute cutting blade. It after closing the handles with a brush cuts off the pipe in a flat plane.
Guillotine pipeline device used to cut large diametral pipes (63.5–350.0 mm). The tool is characterized by the presence in the design of a high.strength, sharply bidden blade covered with Teflon. A flat installation of the pipe, as well as unhurried cutting with very sharp blades contribute to the maximum smoothness of the end surfaces. This greatly facilitates the implementation of subsequent electric welding without additional processing of pipe ends.
Recommendation! When there is no specialized tool for cutting pipes from polymer pipe, you can use a special hacksaw for metal or wood. It must be remembered that the slightest violation of such a technology can spoil the trimmed pipe. In addition, the end plane of the cut must be additionally cleaned from burrs and forming chips, and this takes a lot of effort and is spent extra time!
The choice of a specific type of polypropylene pipes to certain conditions
For cutting pipes from polypropylene material, the scissors are chosen for the specific value of their diametral value. Manufacturers today represent piping material in four versions:
-RN-10-choose to create a “warm floor” system and cold water supply. The coolant should not be hot 45.0 C, and intraurular pressure should be maintained at 1.0 MPa;
-RN-16-is suitable for wiring chilled water, as well as for conducting pipelines of a central heating system. The coolant is supplied at low pressure. not more than 1.7 MPa;
-PN-20 is a universal version of the pipe actively used to install hot, warm or cold water supply. Mandatory conditions for installing pipes PN-20: maximum internal pressure 2.1 MPa, and the temperature of the coolant is not more than 80 s;
-PN-25-pipe material reinforced with aluminum foil. This solution allows you to withstand the internal pressure of 2.6 MPa and the maximum water temperature in 95 s pipe walls. Such a type of pipes is perfect for the installation of central heating and hot water supply.
Important! The choice of type of pipe from polypropylene should be carried out carefully, with meticulous accounting of temperature and water pressure in the system, since the direct life of the pipeline depends on these factors!
In addition to various pipe products made of polypropylene, manufacturers make many connecting parts and combined elements. The latter are often equipped with up.up brass inserts with internal or external threaded cutting. Metal inserts make it easy to perform hermetic compounds and switch to other materials.
Remember! Only professional, high.quality modifications of the cutting tool can effectively cope with sharp polypropylene pipes, despite the thickness of their walls and diameter!
How to cut thin.walled pipes
When working with thin.walled rental, there is a high risk of crushing the edges of the saw. To avoid this, apply filling out the profile from the inside:
- When working with a hacksaw, a round wooden stick of suitable diameter is inserted
- When working, the corner grinder is filled with sand, crush it and plug it with traffic jams.
This allows you to maintain the original shape of the pipe and smoothly cut off the required length.
How to correctly solder polypropylene pipes.
Immediately before soldering pipes, you need to prepare all the necessary tools.
VO-1, you need to purchase or rent a special device (soldering iron) for heating the pipes before their docking.
The soldering iron consists of a tire (heating element), a stand in the form of legs and a handle with a control board, nozzles of various diameters. It works from the network.
Secondly, you need to have a roulette, special scissors for cutting pipes (usually they come with a soldering iron in a suitcase).
Soldering polypropylene pipes is carried out according to the subsequent principle:
It is installed on the stand, fasten the nozzles of suitable sizes, set the temperature of 260 º C. You need to wait for about 15 minutes so that the soldering iron is heated. When a reddish indicator goes out, you can start work;