Pipe and drainage conversion works
Danby method
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●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.
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 Danby method |
| Features of the Danby Method |
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- 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
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Material
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The PVC strip is pulled into the manhole
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The pipe is manufactured in a spiral pattern in the existing pipe
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