Column Formers/Casing Liners/Void Forming Tubes/Grout Tube/Post tension tube

Roladuct Column Formers, Pipe Liners and Void Forming Tubes are designed for maximum strength to weight ratio.

Column Formers

Available in either Round or Oval shape


  • Lightweight, high strength
  • Need little support
  • High grade coated steel
  • Easily installed and stripped
  • Manufactured to lengths up to a maximum of 12 metres
  • Size range 50mm to 2500mm
  • Oval sizing - refer to Oval Chart

Casing Liners


  • Lightweight, high strength
  • Available in either lockseam or spiral welded up to 5mm thickness
  • Size range 100mm to 2500mm
  • Manufactured to any transportable length

Void Forming Tubes


  • Increased bridge spans leading to savings in building costs
  • Lightweight high strength tubes
  • Easy handling and installation

Corrugated Profiles

  • Type 1

    Corrugated Profiles 150 mm to 800 Dia.
  • Type 2

    Corrugated Profiles 900 mm to 1500 Dia.