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Pipe and drainage conversion works

Danby method

●Environmentally method with speedy restoration of medium or large culvert without excavation

This innovative method is capable of repairing large-diameter pipes up to 3000 mm. By installing rigid PVC strip in a spiral pattern inside the existing pipe, it can repair bump and gap in the pipe, also be used for all kinds of pipe shapes.

Danby method
Features of the Danby Method
  • Applicable to all shapes, including circular and non-circular
  • Equal or greater strength than the new tube
  • Improvement of earthquake resistance
  • Possible to install wide range of conditions including bump and bend
The PVC strip is pulled into the manhole
The pipe is manufactured in a spiral pattern in the existing pipe