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Polyester pipe is a tube-like product from fibreglass reinforced resin, the common name of which is GRP, FRP or fibreglass pipe. By combining fibreglass, thermostable resin and special fillers in appropriate quantities, it is possible to produce pipes with a wide span of physical and chemical properties, resistant to aggressive media and temperature from -60 ºC to +120 ºC, which results in their diverse application.

Polyester pipes are produced from non-corrodible materials, which provides a whole range of advantages:

   ✔   Lesser pipe weight (1/4 of the cast iron pipe weight or 1/10 concrete pipe weight),
   ✔   Extreme wall smoothness,
   ✔   Unnecessary cathode protection,
   ✔   Unnecessary lining, coating, and painting,
   ✔   The ease of connecting and assembly at the same time means less time to install,
   ✔   Enabled flexible replacement of the pipeline axis,
   ✔   Low maintenance costs,
   ✔   Low transportation costs since the pipes can fit one into another,
   ✔   Hydraulic properties remain unchanged for a long period of time, which means a long and efficient life,
   ✔   The high quality properties of the pipes conform to the world wide standards,
   ✔   Quality ensured for all kinds of application.



Pipe diameter

NOMINAL DIAMETERS DN(mm)
80*
300
700
1300
1900
100*
350
800
1400
2000
125*
400
900
1500
2100
150*
450
1000
1600
2200
200*
500
1100
1700
2300
50*
250
600
1200
1800
2400
*Pipes produced by discontinual filament winding


Pressure class

DESIGNATION
WORKING PRESSURE
PN KPa bar
1 100 1
2,5 250 2,5
6 600 6
10 1000 10
16 1600 16
20 2000 20
25 2500 25
32 3200 32


Stiffness class

Pipe stiffness is the capability of pipe to take over the upper-part load due to earth and traffic, as well as the internal negative pressure. Polyester pipes are delivered with the following tangential initial stiffness (STIS) EI/D3.

DESIGNATION STIFFNESS
SN Pa
1250 1250
2500 2500
5000 5000
10000 10000

Length

Standard length of polyester pipes is 6m and 12m; nevertheless, pipes can be delivered in other dimensions upon buyers’ request.