Technologies
PE sliplining
Renovating sewer, water and gas pipelines with PE pipe is one way of renewing pipelines using trenchless technology. A pipeline renovated with PE pipe is watertight, load-bearing and corrosion-resistant. The low flow resistance of plastic pipes compensates for the smaller diameter, and the higher flow velocity improves the self-cleansing capacity of the pipes.
One of the simplest ways of renewing pipelines using trenchless technology is to pull a PE pipe into the existing pipe, which creates a new pipeline with a smaller diameter than before. The renovated pipe is watertight, load-bearing and corrosion-resistant. The low flow resistance of plastic pipes compensates for the smaller diameter, and the higher flow velocity improves the self-cleansing capacity of the pipes.
PE sliplining is a recognised renovation method in a wide range of situations. To carry out the work, only the start of the section to be renovated needs to be excavated – the so-called launch pit, from which the welded PE pipe is pulled into the existing pipe. Excavation is also required at branch connections. The sections to be renovated can vary in length and may extend up to 150 metres. The space between the new and the old pipe is filled with foamed concrete to prevent possible damage if the old pipeline breaks up.
Diameters: 50 – 1000 mm
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