Effective solution for creating large watercourse crossing points, tunnels and diversions.

Can also be used for playgrounds, paintballing hideouts, BMX tracks, skate parks and assault courses.

Strong & lightweight

Manufactured from recycled HDPE, our large diameter twinwall pipe has an outer corrugated wall to provide structural strength combined with a smooth inner wall to offer optimised hydraulic flow.

These pipes are incredibly lightweight, for ease of handling and installation whilst also being durable and tough. 

Sizes available

Available in single lengths up to 14 metres versus traditional 2.5m concrete lengths and diameters from 750mm to 3500mm.

Lightweight Lightweight

Lightweight, single piece fabrication makes for easy handling and installation.

High strength High strength

This product is manufactured using using ultra tough extruded & spiral welded High Density Polyethylene, and will therefore last for years to come.

Easy handling & installation Easy handling & installation

The lightweight, single piece fabrication makes for easy handling and installation.

Chemical & shock resistant Chemical & shock resistant

Pipes are designed to be chemical and shock resistant to ensure a long product life.

BBA Approved BBA Approved

Our pipes are manufactured to a high quality and are BBA approved.

Range of sizes Range of sizes

We provide a range of sizes and can provide bends and junctions to suit your specific application.


Our large diameter structure pipe can be used for a wide variety of applications. These include:

  • Culverts
  • Outfalls
  • Gravity and low-pressure applications
  • Surface water drainage & attenuation
  • Playgrounds
  • Assault courses
  • Pipe rehabilitation and relining
  • Above and below ground applications