Reaming of copper tubes. Tools and techniques

To keep your home comfortable and cut down on energy expenses, make sure your insulation and heating system are operating efficiently. The correct installation and upkeep of copper tubes, which are essential to many heating systems, is one important component of this. In order to maximize the heating efficiency of your house, we’ll examine the methods and instruments used in the copper tube reaming process in this post.

Because of their exceptional corrosion resistance and thermal conductivity, copper tubes are frequently utilized in heating systems. However, it’s crucial to correctly prepare the tubes before installation in order to guarantee optimum performance. Reaming is an essential step in this preparation process that involves clearing burrs and jagged edges from the tube’s interior.

The reamer itself is one of the most important tools for reaming copper tubes. Usually, this tool is made up of a tapered shaft with cutting edges and a handle. To remove any burrs or imperfections along the inner surface, the reamer is inserted into the copper tube and rotated. Selecting the appropriate reamer size is essential to guarantee a suitable fit and effective heating mechanism.

To get the best results when reaming copper tubes, it’s crucial to use the right technique. To begin, place the reamer inside the tube and rotate it while lightly applying pressure. Refrain from applying too much force as this may lead to uneven reaming or damage the tube. Till the inner surface is uniformly smooth, rotate the reamer a few times.

It is imperative to thoroughly clean the copper tubes after reaming in order to get rid of any debris or particles left over from the process. To make sure there are no obstructions obstructing the tubes’ ability to function, this can be done with compressed air or a brush. In addition to extending the heating system’s lifespan, proper cleaning also averts future problems.

To sum up, reaming copper tubes is an essential step in installing and maintaining your home’s heating system. You can guarantee optimal performance and efficiency by employing the appropriate tools and techniques, which will ultimately result in a more comfortable and economical living space.

Purpose of reaming

The fact that reaming is entirely safe in terms of the assembly or mains capacity is what makes it necessary to do so rather than, say, welding copper tubes in order to design heating, cooling, and other devices of a similar nature.

This is particularly crucial because, because the tubes in this instance have small diameters, the welding process significantly narrows the internal diameter, which lowers pipeline performance.

An additional docking variation that results in an improper outcome is the use of shaped elements to join the tubes, as this too reduces the internal cross-section.

The tube end’s physical expansion permits its installation on a second pipe, a branch pipe, without lowering the structure’s overall capacity or the internal usable diameter.

Flaring technology

What does it mean to "disassembly" or "ream" copper tubes? It is a mechanical enlargement of the pipe end accompanied by a concurrent deformation of the edge shape.

Soft metal can be manipulated because it can change shape in response to outside forces. In this instance, the tube’s area grows while the molding location’s thickness decreases. It is used to create a socket at the end of a straight tube with the necessary diameter and shape so that it can be connected to another component.

Not just copper pipes, but pipes made of almost any material can be flared. Technical difficulties make it difficult to accomplish this most of the time, and the outcome is insufficient to justify the effort.

Particularly, appropriate components manufactured in factory conditions can be found in today’s open sale. Disassembly is typically employed in home settings, where copper tubing is utilized because of its inherent qualities, which make it simple to work with.

Tubes can be connected by coupling or welding. The type of initial treatment applied to the tube edges depends on the method selected (welding or fitting).

The hole is progressively enlarged during the welding process until it is a few tenths of a millimeter bigger than the outer element. Solder will be used to fill the gaps between the components during the soldering process, ensuring the strength of the connection.

If the fitting method is used, the tube is additionally rolled to the desired size before being chamfered. This produces a better joint by increasing the contact area. Copper’s natural ductility and flexibility only serve to facilitate the tight gripping of the part over the entire connection area and the filling of the resulting voids.

Reaming procedure

A copper tube must be reammed in a series of sequential steps:

  • The pipe is cut at right angles, the planes near the cut-off point are thoroughly cleaned, if necessary, the part is returned to the correct shape if it was deformed during cutting. This stage is very important, because poor performance of preparatory operations will not allow you to achieve a good connection, even if then everything is carried out according to the instructions;
  • the prepared tube is placed in a tool, vise, leaving a few millimeters "outside" to be able to work freely with this area. If it is planned to use a fitting, then immediately put a crimp nut and then place the tube in the holder, since it is difficult to install the nut after reaming;
  • a suitable reamer is inserted into the pipe and screwed in. Due to pressure, the metal is stretched, and the edge of the pipe takes the shape of a cone;
  • Then the reamer is removed and the resulting socket is examined and deburred.

If the pipe has cracks, the socket is deflected, or the edges are skewed, this section needs to be cut, and the operation must be repeated to get the desired outcome.

It’s critical to comprehend the significance of correctly reaming copper tubes when it comes to insulation and heating in your home. In addition to facilitating effective heat transfer and guarding against potential blockages or damage to your heating system, reaming ensures a smooth and clean interior surface. It is imperative to utilize appropriate tools and reaming techniques to guarantee the durability and efficiency of your copper tubing. Homeowners can maximize their heating systems for greater energy efficiency and general comfort in their homes by devoting time and effort to this step.

Required tools

There are various tools available for the design, construction complexity, and cost of reaming copper pipes.

The simplest method is to manually extend the copper tube on a suitably sized dummy. Although the desired result will be obtained, it is challenging to create a straight, geometrically correct socket with walls that are the same thickness and uniformly stretched metal across the whole surface in this manner. Additionally, there is a chance of misalignment, poor outcome, and distortion of the tube itself due to variations in hand pressure.

More sophisticated, sophisticated tools with a higher efficiency factor will aid in precise and accurate reaming.


In this instance, simple human power is also employed. With two handles, the tool is intended to function as an expander. A cone-shaped object inserted into the pipe is called a reamer. The expander parts diverge as a result of the lever pressure, stretching the pipe.

The expander has the advantages of being affordable and easy to use. Minus: The results are of low quality because the pipe walls have different deformations and thin areas may not even tear.

Cone reamer

The matrix and the expander itself make up its two components. The matrix is made with holes that correspond to the standard pipe sizes.

The reamer functions by rotating the power screw while it is gradually inserted into the pipe to increase its size. By using specific guides to ensure that the pipe and reamer are positioned exactly as intended, misalignment is prevented and the bore is accurate.

Mechanical reamer

This tool is comparable to the previous one, but instead of a cone serving as its working part, it has rollers. Rollers roll out the walls rather than stretch. The metal expands symmetrically and smoothly, maintaining its thickness throughout the treated area, and the socket takes on the proper shape.

Electric reamer

Electric drive tools expedite the disassembly process and drastically lower labor costs.

Tool Technique
Reaming tool Rotate the reaming tool inside the copper tube to remove burrs and ensure a smooth inner surface.

For comfort, energy efficiency, and financial savings, it is essential that our homes have enough insulation and heating. We have examined the critical procedure of reaming copper tubes throughout this article, which is an important step in preserving the integrity and operation of heating systems. Homeowners and experts alike can confidently take on this task to optimize their home heating systems by knowing the necessary tools and techniques.

Using the appropriate tools for the job is crucial, and this is one of the main lessons we learned from our conversation. The right tools are essential for a seamless and efficient reaming process, whether it’s a copper tube-specific reaming tool or another approach like sandpaper or deburring tools. Purchasing high-quality instruments not only makes the work easier but also increases the heating system’s longevity and effectiveness.

Furthermore, obtaining the best results requires mastering the techniques for reaming copper tubes. It is crucial to pay close attention to details, from placing your hands correctly to applying steady pressure. People can improve the performance of their heating systems by avoiding potential problems like uneven surfaces or damage to the tubing by adhering to best practices and taking the time to complete each step correctly.

Furthermore, problems like blockages or decreased flow rates can be avoided with routine maintenance, which includes reaming copper tubes as needed. Through the integration of this task into regular maintenance schedules, homeowners can anticipate possible problems and guarantee the seamless functioning of their heating systems throughout the year. Regular maintenance can also save costs and increase energy efficiency by optimizing system performance and reducing the need for repairs.

To sum up, reaming copper tubes is an essential part of keeping our homes’ heating systems dependable and effective. We can guarantee optimal performance, energy efficiency, and comfort in our living spaces by becoming familiar with the necessary tools and techniques and implementing regular maintenance practices.

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Sergey Ivanov

I like to help people create comfort and comfort in their homes. I share my experience and knowledge in articles so that you can make the right choice of a heating and insulation system for your home.

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