Production of polyethylene pipes

Polyethylene pipe products are widely used in installation, repair and reconstruction of domestic and industrial pipelines. A special production technology allows to preserve all the positive qualities of plastic, adding stability to the pressure of any working environment
Materials: PE 100, PE 100+, PE 80, PE 100RC
Advantages of the material
Corrosion resistance
Service life for more than 50 years
Sanitary and hygienic, environmental safety
Low roughness and practical absence of pipe overgrowth

High durability to hydroabrasive wear
High chemical resistance
Stability to hydraulic shocks
Stability to the influence of vagus currents (does not conduct current)
Low pipes weight
Ease of transportation
Strength of welded joints that exceeds the strength of pipes themselves
High maintainability

Multilayer pipes for water supply

  • Double-layer pipe
    Outer layer
    Material: polyethylene PE 100 RC
    Increased strength minimizes possible pipe damage and serves as an indicator of pipe damage degree
    Inner layer
    Material: polyethylene PE 100
  • Three-layer pipe
    Outer layer
    Material: polyethylene PE 100 RC
    Increased strength minimizes possible pipe damage and serves as an indicator of pipe damage degree
    Middle layer
    Material: polyethylene PE 100
    Inner layer
    Material: polyethylene PE 100 RC
    Increased strength protects pipe from tension arising from the action of solid debris contained in the local soil; trench laying of pressure pipelines with backfilling is allowed
Point load effect on the pressure pipe
Point loads may occur at the point of contact pipe with sharp inclusions of the soil or fragments of old pipelines. Soil pressure is transmitted through such inclusions unevenly,and the maximum tension develops near the inner surface of the pipe. Joint action of external point loads and internal pressure in the pipe leads to cracks on the inner surface, which subsequently lead to the destruction of the pipe

Laying of polyethylene multilayer pipes

Installation of pipelines using multilayer pipes made of PE 100, PE 100 RC materials is carried out similarly to pressure pipes made of PE 100.
When transporting and storing pipes, it should be laid on a flat surface of vehicles, without sharp protrusions and irregularities to avoid damage to the pipes.
Comply with GOST 18599, as well as SM EN 12201-2+A1:2016, and are widely used in drinking water supply and land reclamation networks

Pipes are used
When trenching without using sand backfilling
With puddle or rotary laying
When laying in unstable and water-saturated soils
Using trenchless technologies
In rocky, gravel-pebble, crushed stone and other soils with the inclusion of the above ones
  • Double-layer pipe is recommended for use:

    • Traditional trench gasket with
    • sandy or clay soil
    • "Pipe-in-pipe" reconstruction in good condition of the inner surface of the renewable pipe
  • Three-layer pipe is recommended for use:
    • In all application areas available
    • for double-layer pipe
    • For trenching of pressure pipelines
    • with backfilling
    • For trenchless recovery
    • In case of open laying without
    • replacing the backfill soil

Pipes supply

In the bays
100, 200m
In sections of 12 m
or by customer
agreement
Diameters
16-450 mm
Temperature of transporting area from 0 to 40 C
SDR
11; 13,6; 17; 21; 26
Working pressure
below PN 25 (25 bar)
Service life more
than 50 years
Guideline documentation GOST 18599-2001 SM EN 12201-2+ A1:2016
Advantages
Tightness during the entire service life
Low and unchanged roughness, no sediments and overgrowths
High chemical resistance, no corrosion
Stability to dynamic and static loads, seismic resistance
Safety for drinking water supply
Low weight
Areas of application
Connection of houses
Intra-quarter water supply networks
Urban water supply networks
Water supply highways
Connection variants
Hover over the «step» to visualize it.
Method 1 - Joint welding
The area is cleared of debris and protected from precipitation (a tent should be installed)
The ends of the pipes installed in the centralizer are cleaned of dirt, the pipes are placed along the axis and fixed in the welding machine
In the device is installed ТОРЦЕВАТЕЛЬ , the contacting surfaces of the pipes are treated, the end face removed and the displacement of the pipe edges is adjusted (the norm is less than 10% of the wall thickness)
The heater is installed, the pipes are seized up and melted, the heater is removed
Pipe ends are seized up and kept under pressure until cooled
Welding is ready
Method 2 - Welding with parts with mortgage heaters
Preparation for installation. Area is freed from garbage and protected from precipitation (a tent is installed). The pipes are cut off at right angle
Pipes are fixed with a positioner or improvised means.
A label is placed.
With the help of a stripping tool, the oxide layer is removed from the pipe, the contacting surfaces of the pipe and the fitting are degreased.
The mark is resumed.
Pipes are installed inside the part (fitting) by tags.
The connection is fixed with a positioner or improvised means. The welding machine is connected.
Welding parameters are entered into the device using a barcode scanner or manually. Welding takes place automatically.
The connection is maintained by the time required for cooling
Welding is ready
Method 3 - Disassembly connection using compression parts
Preparation for installation. The pipes are cut off at right angles
Pipes are inserted inside the fitting to the end
The nut is tightened with the maximum possible force. A special tool is used for pipes over 32 mm
Assembling is ready
Method 4 - Disassesible flanged connection
The connection is assembled, and a gasket is installed between the mating surfaces.
Bolts or studs are tightened crosswise.
Connections is ready
Contacts
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Working hours:
Mon-Fri from 9:00 to 17:00
Production
Address:
Moldova Republic, Grigoriopol region, Mayak city
Office
Address:

Phone:

E-mail:
Moldova,Tiraspol city,
str. Profsoyusov ,50
+373(533)9-31-45
+373(533)2-51-37
office@polimir.org