Danby Method
Construction is possible only in the work zone on the road without excavation! A new pipeline is formed inside the existing pipe.
The "Danby Method" is a technique for rehabilitating damaged or aging pipes in sewers, agricultural water systems, and sluices without excavation. A rigid PVC strip is fed into the existing pipe from a manhole, and while being spirally wound along the inner surface of the pipe, adjacent strips are joined using fitting components to form a continuous pipe body. Subsequently, using spacers installed above the existing pipe for injecting filling material, the gaps between the strip pipe and the existing pipe are filled with the material, resulting in a composite pipe integrated with the existing pipe, exhibiting high strength and water tightness. 【Features】 ■ Can be constructed only within the work zone on the road without excavation ■ Forms a new pipeline on the inner surface of the existing pipe ■ Improved chemical resistance and abrasion resistance due to the formation of a rigid PVC pipeline ■ Enhanced load capacity, seismic resistance, and flow capacity as a composite pipe integrated with the existing pipe *For more details, please download the PDF or feel free to contact us.
basic information
**Merits** - Since it is non-excavation, it can minimize the impact on the surrounding environment. - By utilizing existing pipes, it can reduce costs and eliminate waste generation. - Improved chemical resistance and abrasion resistance increase the durability after rehabilitation. - It has a load capacity equal to or greater than that of existing pipes, and the flow capacity is enhanced due to improved roughness coefficient, while the flexibility of the fitting components improves seismic resistance. *For more details, please download the PDF or feel free to contact us.*
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For more details, please download the PDF or feel free to contact us.
