Apparatus for welding polyethylene pipes: when and why is needed

What is polyethylene pipes HDPE or PE100

Before choosing professional equipment and aggregates for welding polyethylene pipelines, it makes sense to evaluate three critical points:

• the length of your network and the number of connectors;
• real mode of use of a plumbing( sewage, heating) system based on PE80 or HDPE pipes;
• costs for the acquisition of the most simple apparatus for welding pipeline segments, reduced to the cost of one running meter of the finished pipeline.

At its core, it can be the same pipe product. It is important to remember that different markings and trade names do not abolish the provisions of the interstate standard GOST 18599-2001 on polyethylene pipes, which you will mount with a still incomprehensible apparatus for their butt welding. Let's take a look at the assortment:

Category	Nominal diameter, mm	Max.pressure, MPa
PE32	10-160	0.25 -1.0
63	16-1200	0.25 -1.0
80	16 -1200	0.5-1.25
100	32-1000	1.0 -1,6

We will not comment on the operating parameters and operational conditions of polyethylene pipes for various engineering systems, these products have been working for decades in both centralized water supply systems and in private countryside areas.

Basic physical properties of polyethylene products:

• are able to work in any communications with a constant coolant temperature of up to +80 degrees;for suburban buildings such temperature loads are not characteristic;
• strangely enough, but the material has a lower density than water that flows in polyethylene pipes;the specific weight of the running meter of a standard pipe with a diameter of 120 cm weighs about 207 kg;
• the highest elasticity: tensile, even with the weakest hydraulic and mechanical loads by 10-20%, no metal pipe can withstand, and we have 60-80;
• low coefficient of internal friction;The roughness of the rolled products from polyethylene should not exceed 0.005 mm.

Agree, with the right choice of diameters, wall thickness and competent butt welding by a certified apparatus, such polyethylene pipes in the assembly can serve decades even in collective engineering networks.

Equipment for welding polyethylene pipes

Machines for welding HDPE( the term: low-pressure polyethylene for molding) pipe connections for various purposes can be divided into three categories:

1. Manual butt welding of small diameter systems. Headache and weak replacement of ordinary fittings in a private building. It is simpler and cheaper each year to buy new overturned couplings and tees than to look for leaks in the seams of welded water pipes that broke in the winter and run around with the apparatus for welding polyethylene pipes throughout the site.
2. Semiautomatic welding of polyethylene pipes, as a rule, partially replaces the mechanical unit with a more perfect hydraulic device. Docking and scoring of compounds occurs in the presence of the operator, but many of its functions are greatly facilitated.
3. Automatic welding equipment for PE pipes. It would be strange if such devices for industrial pipelines were not invented. Human functions are minimized, the automation programmed for the system parameters( material, diameter, pipe wall thickness and even climatic conditions), itself determines the temperature and the heating time of the joints.

We choose the device for electrofusion welding

If you seriously decided on wiring a fixed pipeline of polyethylene structures on your site and are ready to perform their welding yourself, pay attention to the units of this type:

Name of the device	Range of welded diameters, mm	Power consumption, kW	Weight, kg	Price, thousand rubles.
20-710	3.78	11.5	153.3
MSA 350 PLUS	20-710	3.78	11.5	257.9
Track M	20-630	4,0	16,0	105,5

We dare to assure you that these are the most democratic prices for such devices, so there is no sense in buying them, even in the fold with neighbors. Professionals should carry out such work with the HDPE, and we, the poorest gardeners, will have to pay for the depreciation of the equipment.