How to cut metal pipes

Over time, the old pipes wear out, begin to leak, and the inevitable need for replacement of the pipeline comes. There are quite a few people who still consider iron pipes to be almost perfect. But today there is a more modern solution - pipes based on polypropylene and polymer compositions with a metal frame. But what is it and how is it installed?

In order to understand the subtleties of cutting metal-plastic pipes and their installation, it is worth explaining a little why the metal pipeline is not currently in demand. Everything is obvious and simple - the metal is bulky, difficult to deliver and subject to corrosion. In addition, the metal pipeline is not so easy to install. Copper is oxidized and turns green in a wet environment. In addition, it is much more expensive in price than steel pipes.

Below we will discuss the device of the pipe based on metal-plastic and how to cut the metal-plastic pipes.

Preparation of the pipe and the necessary tools

The first step is to choose the right tool. At our disposal: 

• metal plastic calibrator;
• pipe bender or reinforced spring;
• adjustable wrenches, foil;
• fireproof fabric. 

The basis of metal-plastic pipes includes a layer of polypropylene plastic, a thin aluminum pavement made using ultra-precise laser welding and the final thin layer of plastic. The aluminum tube inside performs the function of a tube “frame”. 

The internal surface of the pipeline is ideally smooth, therefore, unlike iron, such a pipe does not collect rust and other slag on its surface. If you need to clean the outer part of the reinforced coating, you should use a simple clutch with blades. The front part of the material is girdled by the coupling itself. After the coupling nozzle, an ideally even cut is obtained. The whole process will not take more than five minutes. 

Tip! The cleaning of the reinforced surface is done in order to get rid of the polymer layer and the protective coating, which is necessary for subsequent welding work. It is taken into account at the same time that the material is cut off of the thickness that is needed for the fitting nozzle. 

What is cutting plastic pipes? 

And now let's talk directly about how to cut plastic pipes. If it became necessary to cut the metal-plastic pipe, plumbing scissors for metal plastic come to the rescue of the master.

Pipe cutting does not require much effort and is well controlled visually. In the process of the pipe at the junction must be bent. It will take a simple device - pipe bender. Without this simple fixture, it is unlikely to be able to qualitatively bend the pipe yourself. If you try to bend the pipe with your hands, it is likely to damage the aluminum layer, which will lead to an early failure of the entire pipeline. 

Tip! When using tools that are not intended for processing metal-plastic pipes, there is a big risk of damaging the reinforced layer of the pipe, getting an uneven cut at the outlet, which will eventually lead to an untight connection of the pipes - water will flow at the junction points. 

Technical scissors for cutting polymer pipes are supplied complete with welding machines for metal pipes. This tool has a sharp blade for cutting soft structures and a comfortable grip. The simplest models make it possible to cut a pipe with a radius of no more than 20 mm; therefore, if necessary, you should acquire more advanced scissors, which can be done with large diameter pipes.

• After selecting the appropriate size and scissors marking, the required length is cut off.
• Cutting with special scissors is completely waste-free, after cutting no crumbs remain and you can immediately begin assembly work.
• The work of such scissors does not require any skills, and you can cut without additional skills.

Metal-plastic pipes can be cut with old habitual devices and surely many are interested in how to cut a pipe with a grinder.

The first thing on the pipe is a mark. Suitable Bulgarian any size. In this case, you need to have a disk for cutting metal structures. An important digression is not to make significant efforts at work. Cutting is done quickly, but there is considerable noise at work, as well as a certain amount of chips can not be avoided.

Video

This video shows the operation of the pipe cutter for metal-plastic pipes: