How to cut a pipe under 45

How to cut a cast iron pipe

Cast iron as a material has its own specifics and differs from steel alloys in a number of physical and mechanical characteristics. With high strength, cast iron is a very fragile material.

A cast iron pipe is marked in the same way as a steel pipe. Before starting work, wooden blocks should be placed for support. An angle grinder with a cut-off wheel needs to make a shallow cut around the entire circumference. Next, a chisel inserted into the incision must be hit with great force. The product will split straight along the cut line.

pipe

Cutting a cast iron pipe

If an angle grinder is not available, you will have to make a circular cut with a hacksaw for metal.

Paper mold for pipe

To cut exactly at 45 °, you can make your own paper mold. To do this, you should:

  • Measure or calculate the length of the outer circumference.
  • From the corner of a sheet of A4 printer paper, draw a line at an angle of 45 °. If there is no protractor, such a line can be obtained by folding together the edges of the sheet adjacent to the corner.
  • Put the circumference on it.
  • This will be the hypotenuse. Build an isosceles right triangle to it. One side will be the edge of the paper, the other should be lowered perpendicular to the second edge from the deferred point.
  • Cut the resulting triangle. this will be the template for cutting pipes at an angle of 45 °.

Paper mold for pipe

It should be wrapped around the workpiece, aligning the ends of the hypotenuse. The cut will pass along the mowing line of the legs. the line should be marked with a marker or paper tape. Further, along the marked mowing line, it will be possible to evenly cut a piece with the required bevel.

The method is suitable for pipes with a diameter of up to 63 millimeters.

Precision cutting machines

Band saws are distinguished by high stability of the blade plane and cutting accuracy. They are also widely used in the procurement areas of small-scale and medium-scale production. They are characterized by versatility, reliability and high performance.

For private use, the Italian company MASS offers a compact band sawing unit. It is equipped with a manual clamping device and can evenly cut pipes with a diameter of up to 65 mm, as well as rolled products of any profile of the same thickness.

The rotary device allows you to set an arbitrary cutting direction from 0 to 45 °. Cutting blade movement frequency. up to 45 strokes per minute. An economical 370 watt motor allows you to use a regular home single-phase 220 V power grid.

How to cut along

Not often, but sometimes it is still required to cut the pipe lengthwise. You should proceed as follows:

  • Carefully mark the cutting line. Use chopping line, marker or masking tape.
  • Secure the pipe, next to the pipe, provide an arm support along the entire mowing line of the cut.
  • Take your time, slowly moving the angle grinder blade along the cut line, keeping your hand supported, make the cut. The depth of immersion of the disc into the cut should be constantly monitored so as not to saw through the opposite wall.

Used tools

At first glance, this operation is not difficult. cutting pipes in practice reveals a lot of nuances and pitfalls. It’s not so easy to cut the tubes straight:

  • Thin-walled.
  • Large diameter.
  • Bevel.

It is very important to select the appropriate cutting method and special equipment for each specific case. It is subdivided into individual, household and industrial.

Miter box for cutting pipes

Carpenters have long used a simple, but very useful device to cut the ends of bars, rectangular, round and shaped, evenly at an angle. A carpenter’s miter box is good for sawing off plastic or non-thick metal pipe.

You can use a ready-made one, or you can make a miter box with your own hands. Its advantage is that it can be made exactly to the size of the pipe. For manufacturing you will need:

  • Cut a plank with a length of 40-50 cm and a width equal to the pipe diameter.
  • Cut two boards of the same length, but wider by the thickness of the first board.
  • Assemble the boards on self-tapping screws, attaching the side boards to the base so that a U-shaped groove is obtained.
  • In the center, mark and make vertical cuts in the side boards to the base so that a straight line drawn through them forms angles of 90, 60, 45 and 30 ° with the longitudinal axis of the structure.
  • Make cuts at different angles if necessary.

It is better to make the side walls of more durable wood. this will extend the service life of the equipment.

Such a miter box not only defines and helps to maintain the correct cutting line and cut straight. It also serves as a means of securing the pipe. It is enough to hold the pipe with your hand together with the miter box. For each diameter, you will have to make a separate tooling.

During operation, the slots in the side walls are also subject to wear. It is necessary to ensure that the hacksaw blade runs in them with minimal backlash. In case of wear, you can saw new slots parallel to the old ones, at least 3 centimeters away from them, or replace the side walls.

This miter box has the following advantages:

  • simplicity of design and manufacture
  • cheapness
  • the ability to make tooling for any diameter and required angle

Miter box for cutting pipes

  • inconvenient to work with large diameters and wall thicknesses
  • binding of each rig to its own diameter
  • only compatible with metal hacksaw

How to cut a pipe at a 45 degree angle

Small diameter plastic pipes can be cut using specialized scissors.

Steel pipes can be cut with an angle grinder, but it is better to use a more accurate tool. a band saw with a turntable equipped with clamps. A tabletop disc cutter will also work.

When using a general-purpose tool, you will definitely have to use one or another rig.

How to cut a pipe at a 45 degree angle

Cutting Angle Calculation Programs

A 45 ° cut template can be obtained by folding a square piece of paper in half. To form patterns for other bevels, you will need to perform more or less complex trigonometric calculations. For those who safely left sines and cosines in high school and are not going to remember formulas, many programs for calculating patterns for any required angle are available on the network. The program performs a calculation for a user-specified diameter and angle of cut and creates an image of the piece, which should be printed on your printer.

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Important: in the print settings, select the “full size” option and disable image scaling.

Techniques for cutting pipes at an angle of circular cross-section

Round pipes of different diameters are cut at an angle when the direction of the pipeline is changed, while it should be borne in mind that a straight cut at the desired angle, unlike a rectangular section, will not lead to a tight joint of the edges. Therefore, special patterns are used, in which the marked edge has a curved shape, which makes it possible to obtain a high density of the connection.

Collar insert

In order to obtain branches of metal pipelines in the form of tees, a collar insert is used, for which it is necessary to cut the edge of a round pipe adjacent to the walls of another at a right angle. To implement the method, proceed as follows:

  • cut the edges of the workpiece at right angles as described earlier.
  • On a round end surface, four equidistant points are marked with a marker, located at angles of 90 and 180 degrees to each other.
  • The circumference is measured, the resulting diameter is divided by 3. From two diametrically located points, the resulting distance is laid, after which these points are connected to two other smooth arc, drawing the fishing line with a marker.
  • An angle grinder is cut along the markings and the semicircular segments are separated, after which the part is ready for welding. With minor inaccuracies in the pairing, it can be sealed with a sledgehammer, attaching it to the round surface of another element.

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For industrial use

In industry, large-diameter pipelines are used to transport liquids and gases, therefore, pipe cutting machines have a large weight and dimensions. There are also manual pipe cutters of a rotary and clamping principle of operation. In the first case, the cutting rollers rotate along a circular surface using a repositionable handle, in the second version, the cutting is carried out by arcuate plates, which gradually shift when rotating.

How to cut 45 degree pipe with high precision at home

When carrying out work on the installation of gas or water mains, it is often necessary to change the direction of the mowing line, while the pipeline is cut and then welded at the desired angle. Most often, the direction changes by 90 degrees, and the question arises. how to cut the pipe at 45 degrees in order to accurately connect the joints when welding.

It is possible to cope with the problem with cut edge angles of 45 or 90 degrees with the appropriate knowledge and techniques that will help save not only time, but also materials during work. At other angles of rotation, it is impossible to solve the problem with a ruler and a sheet of paper. you will have to call computer equipment for help.

  • Cutting at 45 degrees
  • Making a template for trimming a metal profile
  • DIY pipe miter box
  • Cutting at 90 degrees
  • Collar insert
  • Techniques for cutting pipes at an angle of circular cross-section
  • Paper mold for pipe
  • Used tools
  • For individual use
  • For industrial use
  • How to cut a large 45 degree pipe
  • How to cut a cast iron pipe
  • Some tips for cutting pipes
  • Performing a longitudinal cut
  • Oblique cut

Cutting at 90 degrees

To cut straight across a round pipeline or a rectangular metal profile, use a sheet of plain paper. They wrap the workpiece in such a way that the edges of the paper sheet coincide, after which it is fixed on the part with tape or glue. an angle grinder is held next to the edge of the paper sheet with a thin line, after which it is gradually deepened until it is completely cut.

A metal profile or a round pipe can be cut using a template, putting on them an evenly cut element with a large inner diameter.

How to cut a cast iron pipe

The main difference between cast iron and ordinary steel is its high brittleness and large wall thickness; its accurate cutting must be performed in the following sequence:

  • A marking corner is drawn using a template using a scribe, for

supports under the part put a wooden board or board.

  • Perform an angle grinder shallow cut of the surface along the entire perimeter.
  • Further, the groove is deepened in several passes until the two parts are completely separated.

For individual use

The following tools are used for cutting steel pipes in the household:

Manual pipe cutters. Allows you to cut round parts with an even right angle cut due to the cutting edges of the rollers. There are several types of products of this type, consisting of single rollers or a series of them attached to a chain. In everyday life, such devices are quite rare and are more suitable for professional work.

Angle Grinder. It is a universal tool for cutting any metal parts with different angles; special discs for metal are used for work, which grind off rather quickly during operation. This allows you to accurately cut a curve in the line with a small diameter disc.

Gas-burner. A fast and effective method of cutting metal surfaces with a hot flame jet; disadvantages include melted edges, which complicate further welding. It is difficult to cut a product using a gas burner according to a paper template, which will burn, and if a fishing line is drawn, then it will practically not be visible in a stream of flame.

Electric pipe cutters. To work with pipelines of small diameters, you can use compact electric pipe cutters, according to the principle of operation, resembling an angle grinder. The device is called a roller machine, during operation, the part is installed on the bed and rotates on roller guides, from above its surface is cut by an electrical device. The main difference between the pipe cutter is a metal disc, which has a special durable spraying for cutting metal.

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Pipe cutting at an angle of 45 and 90 degrees

If you need to cut the pipe at an angle of 45 degrees, which is more often required when laying water, heating pipes. Steel, cast iron pipes that are cylindrical in shape are often used. In installation work, rectangular or shaped pipes are used. However, the pipe of the angle grinder should be cut correctly so that it can be easily connected later. Therefore, you should carefully mark the pipe.

Some craftsmen try to mark the place of the cut using a tape measure, but we warn you that the result is likely to be negative. And for a positive result, consider the following professional recommendation.

Take a sheet of paper or cardboard, preferably A4, fold it diagonally and wrap it around the pipe where you plan to cut it evenly. The edges of the paper must be in perfect alignment with each other. And the side of the paper that is closer to the end of the pipe was perpendicular to the axis. Then mark the cut line in a circle.

If you need to cut exactly at an angle of 90 degrees, then solve the problem quickly using paper or masking tape again. Wrap around the pipe so the ends match. Make even lines and saw off.

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How to cut a profile pipe straight?

Masters advise using a square when cutting a profile pipe. To do this, apply the square in turn to the sides, and turn and mark with smooth movements. After action, fix the pipe and cut. Prepare yourself a template that will come in handy in the future and save time. It is better to produce an angle grinder, so the cut will be smoother.

How to cut a cast iron pipe?

When working with a cast iron pipe, keep in mind that it is a brittle material. Therefore, we will point out a way with which it will be possible to cut such a metal without damage.

Before starting work, make notes for the cut, just like with steel pipes. Place a piece of wood for support. Run an angle grinder around the circumference of the pipe making small cuts. Then take the chisels, insert into the groove and hit hard with a hammer. Note that bakelite-based cutting discs are used to cut cast iron pipes.

If you do not have an angle grinder at hand to cut a cast-iron sewer pipe or other purposes, use a metal hacksaw, chisels or special pipe cutters.

How to cut a gas pipe?

Cutting a gas pipe is dangerous, so it is best to entrust it to professionals. But if you are confident in the strength, then to cut the metal, take an angle grinder, welding, hacksaw, gas welding.

  • Shut off the gas riser before work. Then release the rest of the gas from the pipe. To do this, set fire to the gas in the burners and wait for it to go out.
  • After the steps taken, cut. Using the welding method, the metal base burns out when exposed to high temperature. The result is fast and effective. But remember that cutting or rooting gas pipes again requires experience.

How to cut a pipe straight angle grinder?

When dealing with construction or plumbing tasks, you need to know how to cut the pipe straight from an angle grinder. In the article, we will consider quick and easy ways of how to properly cut an angle grinder pipe so that the result is perfect.

Methods for cutting large diameter pipes

There are a number of reliable tools available for cutting large diameter pipes such as sewers. Let’s consider some of them in detail below:

  • An angle grinder is an inexpensive and affordable option, but it is considered not the safest when working with such materials. Once you decide to use this method, then be careful and use protective equipment.
  • A roller machine (pipe cutter) is such a tool adapted for such manipulations. The device is attached and material removal begins. The clamping force is adjusted using mechanical devices. It is important to note that the models of the machine differ in shape, so consider the ratio of dimensions to the pipe before use.
  • Flame cutting is the most popular option for cutting large diameter pipes, sheet metal. The cut occurs due to the action of a high intensity flame, the metal melts and leaves the cut zone with a gas flow. This method is convenient and effective.

How to cut a pipe lengthwise correctly?

A quick way to cut a pipe lengthwise with an angle grinder:

  • Focus on the markup.
  • Use for such a case the painter’s thread, which has found distribution when marking walls.
  • Before starting work, fix the pipe and with small movements, carefully saw the pipe.
  • Better not to rush, but delicately and slowly process the parts of the pipe, so the cutting disc will not jump off the marking lines. Remember safety.

How to cut thin-walled pipes?

Thin-walled pipes are made of non-ferrous metals: aluminum, copper. Such work should be done delicately, since there is a high probability of deformation of the material. Fillers such as sand are used for cutting. Actions can be carried out using an angle grinder, a special machine.

Summing up, we emphasize that cutting metal pipes is a complex process, but anyone who wants to enhance it can enhance it. With the advice of a professional, you can easily cut pipes in a variety of sizes and materials. Also remember to use a file or emery paper to clean the edges of the pipes after cutting. And the most important thing to remember when starting such actions is safety precautions. Wear a special suit (casing), mask or goggles when getting started. Hands should also be reliably protected from sparks, so use thick gloves.

Collar insert

In order to obtain branches of metal pipelines in the form of tees, a collar insert is used, for which it is necessary to cut the edge of a round pipe adjacent to the walls of another at a right angle. To implement the method, proceed as follows:

  • cut the edges of the workpiece at right angles as described earlier.
  • On a round end surface, four equidistant points are marked with a marker, located at angles of 90 and 180 degrees to each other.
  • The circumference is measured, the resulting diameter is divided by 3. From two diametrically located points, the resulting distance is laid, after which these points are connected to two other smooth arc, drawing the fishing line with a marker.
  • An angle grinder is cut along the markings and the semicircular segments are separated, after which the part is ready for welding. With minor inaccuracies in the pairing, it can be sealed with a sledgehammer, attaching it to the round surface of another element.

Oblique cut

By changing the direction of the pipeline at an angle greater than 90 degrees, manual methods of making templates become too complex. The use of a special program for calculating and creating patterns on a computer for any angles can come to the rescue. The method is good because it has a high accuracy of creating paper templates and is easy to implement with a printer.

To obtain a paper pattern, the necessary data on bending angles and pipe diameter are entered into the program, after which a template is obtained, which is printed on a printer in full size. It remains only to cut it out, stick it on the trimmed element and mark its contour.

Further cutting is done with an angle grinder in a standard way. An important advantage of machine templates is the ability to cut them in unlimited quantities with the same precision.

For a high-quality connection of cylindrical pipeline elements, they must be accurately cut at angles of 45 and 90 degrees. To carry out these works, special patterns are used, the shape of the bends of which is calculated manually or built by a computer. They are cut on paper and glued to the tubular surface, then the element is cut along the paper contour by an angle grinder with a small disc. Thus, it is possible to obtain a high-precision corner joint with the most approximate edges.

For individual use

The following tools are used for cutting steel pipes in the household:

Manual pipe cutters. Allows you to cut round parts with an even right angle cut due to the cutting edges of the rollers. There are several types of products of this type, consisting of single rollers or a series of them attached to a chain. In everyday life, such devices are quite rare and are more suitable for professional work.

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Angle Grinder. It is a universal tool for cutting any metal parts with different angles; special discs for metal are used for work, which grind off rather quickly during operation. This allows you to accurately cut a curve in the line with a small diameter disc.

Gas-burner. A fast and effective method of cutting metal surfaces with a hot flame jet; disadvantages include melted edges, which complicate further welding. It is difficult to cut a product using a gas burner according to a paper template, which will burn, and if a fishing line is drawn, then it will practically not be visible in a stream of flame.

Electric pipe cutters. To work with pipelines of small diameters, you can use compact electric pipe cutters, according to the principle of operation, resembling an angle grinder. The device is called a roller machine, during operation, the part is installed on the bed and rotates on roller guides, from above its surface is cut by an electrical device. The main difference between the pipe cutter is a metal disc, which has a special durable spraying for cutting metal.

For industrial use

In industry, large-diameter pipelines are used to transport liquids and gases, therefore, pipe cutting machines have a large weight and dimensions. There are also manual pipe cutters of a rotary and clamping principle of operation. In the first case, the cutting rollers rotate along a circular surface using a repositionable handle, in the second version, the cutting is carried out by arcuate plates, which gradually shift when rotating.

45 degree pipe

Pipe cutting at an angle of 45 and 90 degrees

If you need to cut the pipe at an angle of 45 degrees, which is more often required when laying water, heating pipes. Steel, cast iron pipes that are cylindrical in shape are often used. In installation work, rectangular or shaped pipes are used. However, the pipe of the angle grinder should be cut correctly so that it can be easily connected later. Therefore, you should carefully mark the pipe.

Some craftsmen try to mark the place of the cut using a tape measure, but we warn you that the result is likely to be negative. And for a positive result, consider the following professional recommendation.

Take a sheet of paper or cardboard, preferably A4, fold it diagonally and wrap it around the pipe where you plan to cut it evenly. The edges of the paper must be in perfect alignment with each other. And the side of the paper that is closer to the end of the pipe was perpendicular to the axis. Then mark the cut line in a circle.

If you need to cut exactly at an angle of 90 degrees, then solve the problem quickly using paper or masking tape again. Wrap around the pipe so the ends match. Make even lines and saw off.

How to cut a profile pipe straight?

Masters advise using a square when cutting a profile pipe. To do this, apply the square in turn to the sides, and turn and mark with smooth movements. After action, fix the pipe and cut. Prepare yourself a template that will come in handy in the future and save time. It is better to produce an angle grinder, so the cut will be smoother.

How to cut a cast iron pipe?

When working with a cast iron pipe, keep in mind that it is a brittle material. Therefore, we will point out a way with which it will be possible to cut such a metal without damage.

Before starting work, make notes for the cut, just like with steel pipes. Place a piece of wood for support. Run an angle grinder around the circumference of the pipe making small cuts. Then take the chisels, insert into the groove and hit hard with a hammer. Note that bakelite-based cutting discs are used to cut cast iron pipes.

If you do not have an angle grinder at hand to cut a cast-iron sewer pipe or other purposes, use a metal hacksaw, chisels or special pipe cutters.

How to cut a gas pipe?

Cutting a gas pipe is dangerous, so it is best to entrust it to professionals. But if you are confident in the strength, then to cut the metal, take an angle grinder, welding, hacksaw, gas welding.

  • Shut off the gas riser before work. Then release the rest of the gas from the pipe. To do this, set fire to the gas in the burners and wait for it to go out.
  • After the steps taken, cut. Using the welding method, the metal base burns out when exposed to high temperature. The result is fast and effective. But remember that cutting or rooting gas pipes again requires experience.

Cutting at 45 degrees

Usually, in order to turn the pipe by 45 degrees, fittings are used, bends with a 45-degree rotation angle, made of the same material as the pipes themselves, if the pipes are steel, then the turns are welded from steel. For HDPE pipes, there are electrically welded or cast bends at 45 degrees (note that it is almost impossible to find compression fittings with such an angle of rotation in Russia).

But, if you still need to cut a round pipe made of steel or various types of plastics, then for this you need a piece for cutting pipes at an angle, the shape of which is calculated manually or by machine. The task is greatly simplified if at an angle of forty-five degrees it is necessary to cut a metal profile of a square cross-section.

For a quick cut, you can use a regular sheet of paper folded diagonally to mark the surface for the future cut. Using folded paper, proceed as follows:

  • carried out on a straight surface of the profile in the place where the cut is made, strictly perpendicular to the line;
  • apply a diagonally folded sheet of paper to the side surface with the sharp end to the mowing line so that the top edge of the paper triangle is flush with the top side of the metal profile.
  • draw the line with a pencil along the side of the sheet at an angle of 45 degrees, after which the paper corner is applied to the other side and outlined with a pencil (it is better to use a thin marker).

For sawing, you can use an angle grinder with a disc for metal, first drawing a thin line along the markings, and then gradually deepening it until the edges are completely separated.

When working with an angle grinder, the following factor must be taken into account. if the edges are completely cut, the disc can be damaged by an acute angle, which will lead to its failure, and in the absence of protection on the angle grinder, even to injury to the worker. Therefore, it is advisable not to cut the corner edges to the end, but to leave a narrow groove and then break off, subsequently grinding the protrusion.