FILDREN – PE Double Wall Slotted Corrugated Pipes with Geotextile Coating

FILDREN is a high-performance drainage pipe system manufactured from high-density polyethylene (HDPE) or polypropylene (PP), designed for underground groundwater drainage applications. The system features a double-wall corrugated structure with a smooth internal bore for efficient flow and a corrugated external surface for structural strength.

Integrated transverse slots enable effective groundwater collection, while an externally applied non-woven polypropylene geotextile filter sock provides continuous filtration and protection against fine particle ingress. The filter sock is permanently secured using a sewing technique to ensure durability and consistent performance.

The system is available in outside diameters from DN/OD 125 mm to 1200 mm and is supplied in both coils and straight lengths.

Category:

Description

Features & Benefits

  • Integrated Geotextile Filter Sock
    Pre-installed non-woven PP filter layer prevents soil ingress while maintaining effective drainage performance.
  • Controlled Filtration Performance
    Filter sock with a basic weight of 150 ±10 g/m², ensuring consistent hydraulic behaviour and soil retention.
  • Flexible Supply Formats
    Available in coils (green sock) and straight lengths (white sock), offering installation flexibility across different site conditions.
  • Tight Bending Radius (Coils)
    Coil format allows for close bending radius installation, improving adaptability on constrained sites.
  • Reliable Structural Performance
    Available in multiple ring stiffness classes:

    • SN4 and SN8 for PE systems
    • SN16 for PP systems
  • Secure Coupling Connections
    Designed for straightforward coupling jointing to ensure reliable and efficient installation.
  • Excellent Chemical and Abrasion Resistance
    Manufactured from durable thermoplastics suitable for aggressive soil and groundwater conditions.
  • Electrically Non-Conductive
    Inert to stray electrical currents, preventing corrosion-related degradation.
  • Lightweight and Easy Installation
    Reduced weight compared with traditional drainage systems enables faster handling and installation.
  • Environmentally Responsible
    Fully recyclable materials support sustainable construction and environmental best practice.