How to cut a pipe at 90 degrees

The final part

Do not think that an angle grinder with a cutting disc is a tool used exclusively for dismantling metal structures and does not require precision in the work. Rather, on the contrary. angle grinder requires extreme concentration and care in the work. This is quite a traumatic tool, and therefore, when working with it, you should not forget not only about the correct marking, but also about safety requirements.

pipe, degrees

Only accurate calculation and cutting will allow you to perfectly align the pipes at an angle

The HouseChief editorial board hopes that the ways described in today’s article will help novice craftsmen with various repair jobs. All arising in the process of reading the questions you can ask in the Комментарии и мнения владельцев below. There please also describe your experience of sawing pipes, which may be helpful to other readers.

In conclusion, we suggest you watch a short video, which will tell a little more about the methods of work of the angle grinder.

How to correctly cut pipes of different metal

Accurate sawing and trimming of pipes depends not only on properly performed marking. The material is also important. metal of different thickness and hardness is cut with different efforts and side effects. In order to properly cut a cast iron pipe it is not necessary to saw through it to its full depth. Cast iron is a fragile metal, so usually make a few notches, and then a specialist makes one precise blow with a chisel to beat off a piece.

To work with thin-walled pipes you will have to very accurately align the position of the angle grinder. In this case, the master must correctly pick up [discs for cutting metal with an angle grinder]. In industrial conditions to perform the same tasks, you can use special pipe cutters, gas cutters and welding machines.

IMPORTANT: Seamless stainless steel pipe

Safety when cutting a gas pipe

When working with gas pipes connected to the mains, it is important to observe safety precautions. First turn off the gas tap, then make sure there is nothing in the pipe. To do this, just open the burners of the stove and light the gas. when it runs out, the flame will go out.

Using a water container

Marking in the water What to do if we are dealing with a pipe of small diameter, and the pipe should be cut at an angle somewhere near the edge? A deep container filled with water can be of great help. Before starting the work, it is necessary to calculate the angle of inclination and make a mark on the vessel. Next, all we have to do is carefully lower the edge of the pipe into the water and bend it to the mark on the container. We pull out the pipe, mark the line of contact with the water, and boldly cut according to the markings. This method is good for marking a large number of pipes. A ready template from a container of water will speed up our work.

Marking with a piece of paper

One of the easiest methods is to mark out the corner with a piece of paper. We fold a square sheet strictly along the diagonal. Take the tube and wrap it around the folded sheet so that the edges of the diagonals are against each other. Thus, on the smaller side of the sheet we have a 45 degree angle. Take any marking tool and mark the place of the future cut of the pipe on the scythe line of the sheet. To avoid accidentally rubbing off the markings, you can use a narrow adhesive tape. This method of marking is convenient for a long pipe of large diameter, and the place of cutting is somewhere in the middle.

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How to evenly cut a profile pipe across

Most often, households use rectangular or square metal pipe profile with a wall thickness of no more than 3 mm, and the assembly of welded frameworks requires cutting into individual segments.

To properly cut the pipe, additional devices are used to mark and mark the cut line, some devices act as a support surface for the cutting disc.

Nuances of working with a rectangular cross section

Rectangular blanks are much easier to cut along and across at any angle than cylindrical elements, which are difficult to hold stationary on a flat surface. Cross-cutting workpieces at any angle are not very difficult. the line of the desired angle is drawn on the side face and always coincides with the calculated one (round elements require the use of special templates, calculated on the computer, to connect their faces at an angle other than Straight).

What tool is used?

As mentioned above, the main tool for cutting metal parts in everyday life is an angle grinder, if it is not available, you can use a hacksaw or jigsaw, which can also cut metal materials with a special diamond-coated blade.

Electro-corundum cutting discs, not designed for grinding operations, are used for cutting with a grinding machine. A tape measure, metal ruler, various kinds of clips, pencils, and markers are useful as auxiliary tools.

Paper template for pipe

Using a sheet of paper. This is an easy way to mark a rectangular or square profile for precise cutting at 90 or 45 degrees to its axis.

To make a 90-degree cross-cutting mark, take a sheet of paper and wrap the pipe in them until the edges are precisely aligned, then glue them together. In this method, the cutting line is very visible, unlike drawing with a pencil or marker along the edge of the template.

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They then cut the profile along the patterned edge, alternately on all sides, taking care not to completely cut off the finishing sections. This can cause the disc to bump from sharp corners and shatter.

A sheet of paper can be applied to the sides of rectangular or square tubes. To do this, the sheet of paper is folded diagonally, and the resulting angle of 45 degrees is applied to the sides and the corresponding marks are made. To keep the lateral slashes at the same level, a sharp angle is applied to the transverse slashing line, located at an angle of 90 degrees to the axis, which was previously used in the way described above.

Mitre box for cutting pipe

Cutting profile pipe is very convenient with a special template, which is analogous to a box for cutting building materials at different angles.

For this, a metal template is made from a profile tube cut along a piece of pipe from the top or otherwise may be designed to produce a straight cut line or 45 degree angle.

To cut a metal profile, a template is applied to it, and a dotted line is drawn with a letter, along which the cut is then made. In other cases, the pattern is held and the fishing line is held by the sander along the surface of the workpiece, trying to avoid putting a lot of pressure on the side of the disc on the attached metal template. The template is then removed and the cutting continues along the well-defined recess along the edge of the workpiece.

Using the template, you can get a very straight cut line if you don’t hold it by hand and secure it to the workpiece with clamps or fastening bolts. To make the fastener yourself, a hole is drilled into the side of the template’s U-shaped plate and at this point a connecting nut is welded to the outside and screwed into the bolt. To secure the template, attach it to the workpiece and bolt it down, pressing the surface of the template against the workpiece, after the grinder with the metal disc has notched, slightly touching the edge of the guide.

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How to cut a profiled pipe at an angle

The marking of the profile pipe is different from the round. Its manual execution can lead to significant inaccuracies. The best way to solve the problem is to create a template for cutting from the same profile, but larger in diameter.

A small section of profile pipe is needed. Mark a 45 degree angle on it using an angle gauge. Now using an angle grinder to cut off part of the workpiece according to the marked mowing line. The edges of the cut need to be sanded off, eliminate defects. It remains simply to insert the original product into the template for cutting pipes at an angle. Then you need to make a marking on the mowing line of the cut of the larger profile. And then the pipe itself is cut along it.

The text describes how to cut the pipe at a 45 degree angle. When the marking is finished, it is recommended to use an angle grinder. With its help it will be possible to perform an even cut. It can be replaced with a metal hacksaw. You can also cut the product by welding, but you need experience in handling the tool, otherwise there will be irregularities.

Tools for home and semi-professional use

For the arrangement of plumbing or sewage systems, heating and ventilation circuits in home construction or in the provision of construction services, tools from this category are often used.

Among the most common devices can be named:

  • Cutters with the design of secateurs. Such a tool is used for cutting polymer pipes, the cross-section of which does not exceed 75 mm. To apply the required force for the work, the gear mechanism of the device allows. The design of such a cutter provides a special shelf, on which the pipe is laid, which ensures the evenness of the cut strictly under 90º. The for such tools can be very different, depending on their quality, size, capabilities, manufacturer and other factors.
  • Disc type pipe cutter. In such a device, the pipe is cut by a special disc, which is made of durable material and has sharpened edges. With the help of a lever the cutting disk is pressed to the surface of the pipe and runs along its cross-section. How to choose a pipe cutter for steel pipes and how to use it.

The optimal solution would be such a tool for cutting PVC pipes used in the assembly of indoor and outdoor sewer systems. At the same time, metal-plastic pipes can not be processed with such a pipe cutter, because the material is deformed by the load.


  • Guillotine knife. Its principle of operation is familiar to every educated person. In the upper part of the construction there is a blade, which descends down through special grooves and performs a straight sharp cut. For convenience you can get a device with an electric drive. It is easy and convenient to cut a large number of pipes with such a device. At the same time, in the places of sale you can meet and tools with a screw mechanism.
  • Metal hacksaw. Such a seemingly simple tool can be successfully used for cutting pipe from any material. The main thing in the process of work is not to overdo it, so that the saw blade does not break from excessive effort.
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You can’t cut off a pipe cleanly with a hacksaw, you will get burrs anyway, and you have to file or grind the ends with a shaver. Otherwise, when joining the pipes, you may receive insufficiently hermetic seams.

  • An angle grinder, or, in other words, an angle grinder. The process of how to evenly cut a pipe with an angle grinder is not particularly difficult. To work on it set the discs of the desired diameter and make a cut. And the processing can be carried out on pipes with different cross sections and any material, be it polymers or metal.
  • Electric jigsaw. Although this tool is also widely used in construction, it is not very suitable for cutting pipes, as it is quite difficult to cut the pipe straight.

Consequently, there are quite a few handy tools that are easy to operate, so do not look for difficult ways, when you can do everything quickly and easily.

In addition to hand tools for work in the household and small-scale construction, there is also professional equipment, which is used in industry and for the laying of large main water lines.

How many times to measure and how to cut the pipe evenly

When you have at your disposal all the necessary tools, you do not think about how difficult it is to correctly perform certain routine operations. For example, do you know how to cut a pipe evenly with an angle grinder?? It was with this request came to me from a neighbor in the garage, who, unlike me, is accustomed to do little with their own hands.

It turns out that after the dismantling of the plumbing in the apartment there was a lot of unnecessary pipe, of which his wife decided to do a greenhouse in the country. I do not know why he needed to cut the parts exactly straight, but I gave him all the necessary recommendations.

And at the same time I thought that other people who do not have in their arsenal of professional pipe cutters, need a guide, which describes how to cut the pipe under 90 degrees. That’s why I have prepared the material, which I present to your attention today.

If the pipe is profiled

Cut at an angle profile tube according to the markings

And here, for example, we have a profile pipe, not a round one. Manual marking of a profile pipe can lead to a large error. The best way out of this situation, would be to make a template of the same profile of a larger diameter. Let’s take a small piece of profile pipe and use an angle gauge to mark a 45 degree angle. Cut according to the markings with an angle grinder and grind the edges, so you do not injure yourself on the burrs. Next we only need to insert the profile of a smaller diameter into the template, and, having made the markings, cut it.

Angle-cutting a shaped tube in a makeshift tool

In this article, we looked at how to cut the pipe at a 45 degree angle. Using one of the methods above, mark and cut. For a more even cut, it is better to use an angle grinder. You’ll need experience when cutting with a welder, or the cuts will be bumpy. As a last resort, you can use a metal saw. Nowadays there are a lot of different tools for cutting pipes at an angle, but it is too expensive to buy them. It is easier and cheaper to make a template once, and use it when you need it.