TerraDrain™ is a heavy-duty perforated pipe which is used as a collector in track bed drainage systems. It can be installed at shallower depths than twinwall SDR26 and solid wall PE pipe SDR33, directly under or adjacent to the track where loads of up to 82 Tonnes can be experienced.


  • Undertrack drainage systems and cess drains 
  • Rehabilitation of undertrack drainage culverts


  • Materials suited to meet load conditions
  • Robust semi-rigid construction 
  • Integral flush joining system
  • No additional tamping required 
  • No concrete haunching required 
  • Weld compatible with all PE fittings 
  • Lightweight
  • Chemical resistant 
  • Low coefficient of friction