Designed for external pipelines of non-pressure sewerage, drainage collectors of land reclamation systems, ventilation ducts (in exhaust ventilation systems), laying of telephone cables, associated drainage in heating networks, trunks of rubbish chutes and other purposes.
Advantages:
1.Cheapness(3-4 times cheaper than metal ones)
2.Durability(Service life 40-60 years)
3.Corrosion resistance(do not corrode, do not overgrow)
4.Low thermal conductivity
5.Do not require costs in operation
6.Low labour intensity at installation
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