Rehabilitation is a cost effective way to improve the flow of sewerage / water in the existing line which has been damaged by roots, deposits, cracks, etc. Similar to pipe bursting method, it removes the need for relocation of other utilities in the vicinity.
Although cross-section area of the line is reduced by this method, still it results in a marked improvement in the flow capacity of the line. And since the lining materials are resistant against corrosion and chemicals, liners have a long life.
We have expertise in several rehabilitation processes depending on the project requirements –

Glass Reinforced Plastic (GRP) lining: After the existing line has been cleaned and pre-lining CCTV survey done, a new GRP liner is inserted into the damaged line. Its advantage over other methods is that it can be used with larger diameters and non-circular shapes with ease.

Cured in place pipe (CIPP) lining This method uses epoxy resin-impregnated liners and an inversion process to form a new seamless pipe within a pipe. Its main advantage is short construction times. This method is most suitable for small circular profiles up to 1,000 mm and oval profiles up to 900 / 1350 mm.

Other than these techniques, we can also provide service using following methods on an as required basis

Our Services –
We offer complete EPC service for your projects including –

• Project planning – Site investigation and design calculations
• Selection of right equipment and tooling for the job
• Flow bypass
• Cleaning / Desilting
• Pre and post CCTV inspection
• Pipe condition analysis
• Lining – GRP / CIPP / swagelining / slipline / rolldown / short-liner / subline / compact pipe
• Manhole repair / installation
• Quality Control

Your Solutions –

• Rehabilitation of existing lines in cities, with no space available to install a new line
• Short construction times for your long rehabilitation projects
• Any kind of damaged pipe including damage caused by roots, deposits, cracks, etc. can be rehabilitated by selecting the right technique, thereby, considerably improving the flow capacity of the line
• Liners are resistant against corrosion and chemicals. Long life of liners translates into peace of mind for you for years to come
• No traffic / ground / environmental disturbances

For detailed information on our pipe bursting projects and capabilities, please go to the concerned unit’s page –
Water & Sewer Unit