For more than two decades, KWH Pipe has contributed to the development of pipe rehabilitation methods. KWH Pipe now offers several solutions for relining applications.
Initially the relining of leaking concrete pipes was the major part of the rehabilitation business. Nowadays rehabilitation works encompass segmented pipes, continuous pipes, VipLiner and Weholite pipes. Moreover, raw materials and working procedures have undergone radical changes.
Renovation of gravity sewers, manholes and pressure water pipes.
Trenchless relining using VipLiner short modules, available in sizes 110mm-560mm.
Long length relining using:
PE-pressure pipes in sizes DN/OD 20mm-1600mm.
Weholite pipes in sizes DN/ID 360mm-3500mm.
VipLite corrugated pipe, diameter 110mm.
Manholes to meet customers' special requirements
For rehabilitation of large pipes and road culverts made of concrete or steel, the structured wall pipe, Weholite, is probably the most viable solution. Depending on size, these pipes are jointed either by welding, by sockets, or by a threaded joint.
When wanting to minimise traffic and street disruptions, a no dig solution can be used. The VipLiner rehabilitation method is a sliplining system where you insert a string of discrete or segment pipes into an already existing carrier pipe.
Continuous Sliplining
The continuous sliplining method means that a continuous pipe is inserted into an existing defective pipe. Prior to insertion, the relining pipe is welded in strings and launched from an entry shaft excavated for the rehabilitation project. Usually WehoPipe with diameters of Ø 20 -Ø 1600 mm is used. This method requires winches and pulleys for pulling/pushing the new pipe through the old one. The pipes can be used for
- water mains
- sewers
- gas pipes
If you would like to receive more information of the KWH Pipe Relining and Renovation Systems please contact your nearest KWH Pipe Sales and Marketing office.