PE spiral pipes
Polyethylene (PEHD) spiral pipes are a high-quality, practical and safe method for discharge of waste waters, enabling long-term savings in costs. Owing to advanced extrusion technology, the spiral pipes are lighter than their PVC counterparts and characterised by a higher level of rigidity. These qualities enable easier transportation and installation, as well as savings in time and investment.
The spiral pipes have good hydraulic qualities. The extruded outer wall is spiral in shape, whereas the low friction coefficient of the smooth inner surface guarantees residue-free operation even after a long period of use.
The pipes are resistant to abrasion, aggressive wastewater and chemical impacts. At the same time, they are highly resistant to mechanical shifts of the soil. Their intended use is for underground pipelines, used for disposal of wastewater and surface rainfall.
The pipelines are in compliance with the EN 13476-2 standard for perimeter rigidity consistent with SN4 (4kNm2) and SN8 (8kN/M2) in accordance with SRPS EN ISO 9969 Standard. They can produced to comply with higher values of perimeter rigidity, for the needs of non-standard projects.
The pipes are jointed using the following techniques:
- extrusion welding from the outside, for diameters in the range from DN 300 to DN 1200 mm;
- extrusion welding from the inside and outside, for diameters in the range from DN 700 to DN 1200 mm;
- butt welding for diameters in the range from DN 300 to DN 500 mm;
- heat-shrinking foil is used for diameters in the range from DN 300 to DN 1200.
The inner diameters (ID) of the pipes range from 300 mm to 1200 mm , and the pipe lengths range from 6m to 12m.