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In pipe lining with annular space factory-produced pressure pipes made of PE 100 RC or PE 100 SPC RC are welded together on the construction site to make up a pipe run with axial-restraint connection. These are new, structurally self-supporting lining pressure pipes. 

The pipe run is connected up to a traction head and drawn into the old pipe via a site launch pit, taking the bending radius of the new pipe into account. The resulting annular space between the old pipe and the new pipe is either grouted or not grouted, depending on the condition of the old pipe. When using this method, the original cross section of the pipeline is reduced by the annular space and pipe wall thickness.


As a system manufacturer, SIMONA supplies pressure pipes, pressure-class-compliant standard fittings and application-specific special fittings according to the requirements of the situation on site – solutions tailored specifically to this method of lining.

Rehabilitation range

DN 100 – DN 1200
SDR 11 – SDR 17

Reference

Rehabilitation of gas and water pipelines by PE relining with and without annular space 
DVGW Worksheet GW 320-1