Twin Wall Pipe and Fittings

Twin Pipe

Twin Wall Pipe

Twin wall pipe is a dual-walled pipe used for sub-surface drainage and non-pressurised surface applications. The pipes are made from HDPE in order to give them added strength over that of single walled land drain pipe. Our Ridgidrain system by Polypipe comes in 6m lengths and can be supplied perforated, half-perforated or unperforated.

The following sizes are available: 100mm, 150mm, 200mm, 225mm, 300mm, 375mm, 400mm, 450mm, 500mm, 600mm, 750mm*, 900mm*, 1050mm, 1200mm, 1500mm, 1800mm, 2100mm, 2400mm, 2700mm, 3000mm *available in 3m lengths

The pipe is made from 100% high-density polyethylene with a structured wall, meaning that it is robust, yet flexible and highly resistance to most common chemicals.

Twin Wall pipe installation

Features and Benefits

  • Lightweight and very strong (up to 94% lighter than concrete)
  • Smooth inner wall which allows for increased flow capacity
  • Resistant to naturally occurring chemicals
  • Installation for 0.5m to 10m depths
  • 6 metre lengths give faster and cheaper installation costs
  • Full BBA and HAPAS accreditation
  • Resistant to ground movement and differential


  • Highway drainage (fully approved by the Highways Agency HAPAS)
  • Culvert storm water drainage
  • Rail and airport infrastructure projects
    • Network Rail Parts and Drawing Systems (PADS) approved
  • Landfill ventilation
  • Agriculture
    • Crop Ventilation
    • Culverts
    • Yard drains
Twin wall bends

Twill Wall Pipe Fittings

We also stock and supply a variety of fittings. The range of fittings includes bends, junctions (T and Y), couplers, reducers and seals.

All junctions are triple socketed and bends are double socketed in order to allow easier installation.

All are BBA, BBA HAPAS and Network Rail PADS Approved.

BBA Approval Certificate can be found here:

Twin wall wrapped in geotextile

Geotextile Wrapped Twin Wall Pipe

We can also provide Wrapped Twin Wall pipe, this allows the pipe to be used in sandy land where pipes can get blocked quickly.

The stocking/sock can be quickly applied by pulling it over the Twin Wall Pipe. Alternatively, we can provide the pipe already wrapped in the material for fast installation.

Twin wall pipe is available at our Yorkshire, Cumbria and Warwickshire depots. If you have a special requirement or any questions, please contact us on 01430 430 529 or email

Do you have a question or special requirement?Please contact us today to find out how we can help