Pipe Rehabilitation Methods

Slip-lining is perhaps the oldest of all trenchless techniques . It involves the insertion of a new PE100 or PE100-RC liner pipe of standard diameter and SDR into an existing pipe. Under the right conditions, slip lining is also the simplest trenchless technique.  A new pipe with an outside dimension smaller than the inside dimension of the host pipe is either pulled or pushed into the host pipe. The ideal host pipes for slip lining are straight with no deformities, no or modest bends, no severe protrusions into the pipe, and only modest offset joints.

Close-fit lining is possible because of the memory properties of PE. PE pipe will change shape when force is applied to the material either through the application of compression or tension but will return to its original shape when the external force is removed or internal pressure is applied. This property allows the PE100 or PE100-RC pipe to be temporarily deformed and pulled into the host pipe. When the new pipe has been pulled to the desired position, tension on the pipe is released or internal pressure is applied and the pipe will return to its original shape. The versatility of PE pipe has spawned the development of a wide range of innovative close-fit lining systems.

Technique For all close-fit PE lining methods, during the reduction process the outside diameter of the PE100 or PE100-RC pipe is reduced to less than reduction that can be applied in concentric...

For all close-fit PE lining methods, during the reduction process the outside diameter of the PE100 or PE100-RC pipe is reduced to less than the minimum bore diameter of the host pipe. Once the...

TECHNIQUE All PE close fit lining technologies effectively reduce the original diameter of the PE liner pipe prior to insertion, to facilitate pulling it in to the host pipe, followed by a reversion...

PIPE BURSTING / SPLITTING  - TECHNIQUE Pipe bursting and pipe splitting are trenchless methods used to replace existing pipelines with PE100 or PE100-RC in the same alignment without physically...

PIPE REAMING - TECHNIQUE Pipe reaming , also known as pipe eating , is a trenchless pipe replacement technique that removes the host pipe while at the same time installing a new replacement...

TECHNIQUE Pipe extraction is a trenchless pipe replacement technique that removes existing pipes for disposal while at the same time installing a new replacement PE100 or PE100-RC pipe. There are...