Pipe-in-Liner

A new continuous pipe is inserted inside the existing pipeline, creating a tight-fit semi-structural lining that reinforces it from within. Ideal for pressure pipelines, potable water, and long-run jointless applications.

Pipe-in-Liner technology consists of inserting a continuous pipe inside the existing pipeline, creating a new semi-structural lining that reinforces it from within without excavation. Unlike CIPP, it requires no chemical curing or reactive resins: the new pipe arrives pre-formed and is introduced by pulling or pushing through an existing manhole or access point.

How it works:

The process begins with a CCTV inspection and deep cleaning of the existing pipeline —whose structural integrity must be preserved for the solution to work properly. Next, the continuous pipe —manufactured in long reels or extended sections— is prepared and introduced through a manhole or access point. Using winch pulling or hydraulic pushing, the pipe is positioned inside the existing network. Once in place, it is fitted to the internal wall through pressurization or expansion, creating a tight-fit, continuous lining that works in conjunction with the original pipe.

Why Pipe-in-Liner:

This technology is the optimal solution for pressure pipelines —potable water, industrial lines, critical networks— where the liner must withstand significant internal loads and where extremely long sections without intermediate joints are required. Its homogeneous, factory-manufactured material ensures consistent quality, eliminating risks associated with on-site curing. It is also highly resistant to aggressive chemicals when specialized materials are used.

At TUBEPOL, we apply this technology with internationally certified liners, delivering solutions for potable water networks, industrial pressure lines, and critical conveyance systems where long-term durability is a non-negotiable requirement.