K2-Dren system pipes are profiled wall pipes. The pipe has a double-walled structure, where the outer wall is wave-shaped and the inner one is smooth. The pipe is perforated; depending on the type of drainage pipe, openings are made on the entire surface of the pipe or only parts of it. Polyethylene or polypropylene is used for the manufacture of pipes and fittings, thanks to which they are characterised by high impact resistance and a wide range of operating temperatures. The double-walled design of the pipes gives them a high degree of lightness and flexibility, thanks to which pipe assembly is simple and quick, and changes in direction can be realised at smaller diameters by bending pipes.

The drainage pipes are manufactured in type SN8 with diameters from DN 110 to DN 1000. Pipes and fittings are made of PE HD, connected with couplings already installed on the pipes.

Corrugated drainage pipes are classified by:

• TP (Totally perforated pipes) fully draining - slots distributed around the entire circumference of 360°,
• LP (Locally perforated pipes) partially draining - slots made in the upper part of the pipe at 220° of the circumference,
• MP (Multi purpose pipes) pipes with many applications, filtration and flow gaps made in the upper part of the pipe at 105° of the circumference,
• UP (Operforated pipes) without leakage gaps, formerly OP

The drainage system is designed for drainage of meadows and fields, protection of buildings against moisture and pressure of water penetrating into the ground in the immediate vicinity of foundations and walls.

• Internal and public roads and motorways.
• Airports, railways, urban railway construction (metro).
• Warehouses, industrial sites, car parks and manoeuvring areas.
• Municipal and industrial landfills.
• In addition, the systems can be used for rainwater drainage and percolation.

Standards

• PN-C-89221 - Plastic pipes - corrugated drainage pipes from un-softened poly (vinyl chloride) (PVC-U)
• DIN 4262-1 - Pipes and fittings for subsoil drainage of trafficked areas and underground engineering - Part 1: Pipes, fittings and their joints made from PVC-U, PP and PE

Advantages of heavy-duty drainage systems

• The pipes with a filter made of PP geotextile with a weight of 90 g/m2 have very good hydraulic parameters, very high resistance to clogging and are resistant to the processes of biodegradation. High protection against contamination of pipes with PP nonwoven filter and ecological coconut filter.
• Large area of perforation of drainage pipes, perforated pipes around the entire perimeter (TP).
• The pipes have peripheral stiffness ≥ 4 kN/m2
• Pipes and couplings are made of PE-HD, connected with couplings factory-installed on the pipes, which allows for faster assembly.
• High resistance of PP and PE-HD drainage pipes to chemical, biological and physical corrosion Pipes are available in several filtration variants, depending on the arrangement of the perforations from 360°, 220°, 120° to total absence of perforation.The high durability of the polypropylene PP filter allows the use of pipes in road engineering.Thanks to the use of latches, installation and maintenance have never been easier.