Modern welding machines make it possible to hermetically connect polyethylene pipes of almost any diameter. The devices are capable of working with low and high pressure pipelines. Welding equipment creates seams that are as strong as the base material.
Equipment for welding polyethylene pipes
Today, polyethylene pipes are used for laying gas and water supply communications, sewer networks, as protective ducts for electrical wiring and communication cables, and in technological lines of industrial enterprises.
This is due to the performance characteristics of PE pipes, which are not subject to corrosion, are environmentally friendly, strong and durable, have a low weight and a wide range of operating temperatures, restore their shape with minor deformations, and do not form layers on their inner surface, which are typical for metal pipes.
PE pipes allow you to carry out any complex installation scheme, and two technologies for connecting them are used:
- welding of parts with embedded heaters (ZH);
- butt welding with a heated tool (NI).
It is clear that the polyethylene welding equipment used during the installation process plays an important role in ensuring the reliability of the PE pipeline.
PE connection methods
There are several types of polyethylene pipe connections.
They are divided into several groups:
- detachable;
- one-piece.
The first allows you to disassemble the finished structure. It is used when disassembly is necessary after use. Metal flanges are used for connections. The most durable connection is considered to be a permanent connection. It is achieved by soldering or welding, which is divided into coupling and butt welding.
Welding machine for polyethylene pipes (electrofusion)
Electrofusion welding of parts with embedded heaters (ZH) - involves the use of a special coupling with a built-in electric spiral. The ends of the pipes to be connected, after appropriate processing, are inserted into the coupling; the machine for welding PE pipes supplies an electric current to the contacts of the spiral, under the influence of which the connection elements heat up and fuse together.
This technology is more expensive than butt technology due to the use of parts with embedded heaters, but in conditions of limited space it is the only possible one, since the electrofusion machine for welding polyethylene pipes has small dimensions. Its advantages also include low weight and low energy consumption.
When choosing an electrofusion welding machine for polyethylene pipes, you should pay attention to the following characteristics:
- range of working diameters;
- possibility of logging (especially important for work on gas pipelines);
- presence of a USB port;
- input and output voltage (mains and welding);
- range of ambient temperatures at which the equipment can operate;
- Memory;
- overall dimensions and weight;
- equipment and manufacturer;
- price.
method of data entry (manual or using a barcode);
A welding machine for PE pipes may have additional functions - for example, visual and/or acoustic alarms.
Welding technology
Permanent welded joints of polyethylene pipes are made in two main ways: butt and electrofusion (using special couplings equipped with an embedded heating element).
The butt method includes the following steps:
- leveling the ends of the pipes to be welded using a welding machine end cap to remove contaminants and form a flat surface;
- heating the ends using a heating element under pressure to obtain a primary burr and heating the pipes at reduced pressure;
- when the pipes to be connected have been heated for the required time, the ends of the pipes are quickly removed from contact with the heating element, the heating element is removed from the connection zone and the ends of the pipes are connected under pressure, strictly maintaining alignment, while it is very important to observe the minimum time for this procedure to obtain a high-quality connection;
- After cooling, the seam is inspected for any defects that could compromise the tightness or impair the strength properties.
The advantage of this welding method is that there is no need to purchase additional connecting elements for pipes when welding long linear pipelines; it is enough to have only a pipe and a butt welding machine.
The sequence of actions for electrofusion welding of pipes is as follows:
- alignment and thorough cleaning of the ends of the welded pipes from contamination;
- removal of the oxide layer from the surfaces of the connected pipes in the area of their interface with the electric welded coupling;
- chamfering pipe ends and degreasing working surfaces;
- installation of a coupling with an integrated embedded heating element, with which the pipes will be connected;
- centering the assembled structure and fixing it in a stationary position using special devices (positioners);
- connecting the welding cable connectors of the electrofusion machine to the contacts of the coupling with an embedded heating element;
- entering welding parameters of the coupling into the welding machine;
- launching a welding procedure on the machine, during which the electrofusion welding machine automatically, according to a predetermined algorithm, heats the heating element built into the coupling to the melting temperature of the material in the area where the pipes and the coupling meet, and the pipes are connected;
- After waiting the cooling time, a visual inspection of the joint is carried out for visible defects.
This welding method is more universal and flexible; it is usually used when welding small-diameter pipelines with a large number of turns and branches, or for repairing large-diameter main pipelines in case of local damage, due to the impossibility of using a butt welding machine for such work. Electrofusion welding is indispensable in tight spaces where it is impossible to place a butt welding machine. Despite its versatility, this method of connecting pipes is much less cost-effective, because For each connection, it is necessary to purchase electric couplings, and also have in your arsenal special tools and equipment in the form of devices for removing the oxide layer, chamfer removers, special scrapers, positioners, degreasing wipes, etc.
Welding tool for polyethylene pipes (butt)
Butt welding with a heated tool (HT) is a method of connecting PE pipes, which is most often used when installing communications of any size. The machine for welding polyethylene pipes using this technology consists of:
- heater;
- mechanical or hydraulic centering mechanism;
- trimmer;
- additional units depending on the model.
Butt welding equipment for welding polyethylene pipes generally works according to the following scheme: the ends of the fused pipes are heated, connected and held until the seam has completely cooled. Welding tools for polyethylene pipes vary in:
- range of working diameters;
- ensured connection quality;
- technical parameters;
- size and weight;
- price, manufacturer, etc.
The welding machine for polyethylene can be manual, semi-automatic and automatic.
A hand-held soldering iron for polyethylene pipes is used when working with small-section intra-house communications. All operations are performed manually, the parameters of the welded joint are determined using special tables.
A semi-automatic welding machine for PE pipes allows, with manual provision of welding parameters, automatic connection of pipes using a hydraulic centralizer.
Automatic welding equipment for polyethylene pipes operates on the basis of software without human intervention, which ensures exceptional quality and safety of work.
Advantages of the devices
Butt welding of HDPE pipes or electric couplings ensures a strong, hermetically sealed connection into a new or existing system. The devices allow you to perform work quickly and efficiently, completely eliminating the risk of operator error. Advantages of modern machines:
- versatility - welding HDPE pipes of any diameter and purpose;
- efficiency – reduced installation time;
- ease of use - manual and automatic welding modes;
- profitability - the use of equipment reduces the cost of installing pipelines.
On the official website of the FOX distributor you can buy a welding machine for HDPE pipes in various configurations. Original equipment from the FOX and GEORG FISCHER brands is supplied factory equipped, all models are provided with a manufacturer's warranty.
Welding units for polyethylene pipes presented by us
Our website presents polyethylene pipe welding units produced by leading domestic and world brands: Volzhanin, Yastreb (STS-Soron), ChTZ, AOST, HD, Yuda, Weltech, Nowatech, J. SAURON, Georg Fischer, Caldervale Technology, etc.
I would especially like to note the equipment for welding polyethylene pipes HD, Yuda, Volzhanin. The products of these brands have proven themselves to be the best in various operating conditions and are in high demand among buyers in various price segments. It is she who consistently holds first place in the demand ranking and does not leave the category of bestsellers in our store: .
Traditionally in demand is a manual welding machine for polyethylene pipes RD160/50 manufactured by Yuda, designed for connecting pipes with a cross-section from 50 to 160 mm. This is an easy-to-use, compact and effective tool for welding polyethylene pipes of the most common sizes. The popularity of the model is due to its decent quality at an obviously low price.
Necessary equipment and tools
Tools
Soldering pipes made from HDPE is impossible without the use of a number of special devices. The most important thing in this case is the welding machine. It is a special device that contains a heating element. Holders for various attachments extend from this element. It is these nozzles that are used to melt the material.
Butt welding of polyethylene pipes also requires special measuring and alignment components. They are necessary for clear fixation of products opposite each other.
Typically, cooking appliances are not used at home. They are used in industry, as well as by professional plumbers. This is due to the increased complexity of such work and the risk of leaks. But sometimes such work can be done with your own hands. After all, if you follow simple rules, then all risks will be minimized.
Along with a soldering iron, you may need:
- roulette;
- professional pipe cutter;
- means for degreasing and cleaning surfaces;
- marker for making marks.
Scissors or a pipe cutter often come with a soldering iron, so you most likely won’t have to purchase it separately.
For sleeve welding, you will also need a separate set of fittings of different sizes. These can be straight or angular couplings, taps, distributors or tees.
Other pipe soldering tools are also sometimes used to help the craftsman complete the job as efficiently as possible.
Buy machines for welding polyethylene pipes from us
On the company's website, welding equipment for polyethylene pipes is grouped for the convenience of customers by country of origin, welding technology, working diameters and other characteristics. You can also use the search by specifying the price range, brand and diameter of the device.
In our catalog you will find almost any welding machine for polyethylene pipes, as we are constantly updating our range and inventory, and monitoring the emergence of new products on the market.
To buy an electrofusion or butt device for polyethylene pipes, place an order through the shopping cart or by phone. If you have any questions, you can use the feedback form at the bottom of the page.
The online store offers equipment for welding PE pipes from the world's leading manufacturers in a wide range with delivery throughout Russia.
