SPIRALLY
WOUND PIPE

Spirally wound pipe is a trenchless pipe lining technique where a continuous strip of PVC or HDPE profile is helically wound inside a deteriorated host pipe, creating a new structural liner that reinforces and seals the existing pipe.

Trenchless Technologies is the licensed installer of the Sekisui Ribloc spirally wound trenchless solutions, these include:

• EX – produces a close-fit uPVC liner in diameters from 150 mm to 750 mm. The liner is wound through the host pipe at a smaller diameter and then radially expanded into intimate contact.
• RO – produces a close-fit uPVC liner in diameters from 800 mm to 1800 mm. The Rotaloc machine traverse the host pipe and installs a liner intimate with the pipe wall. The Rotaloc machine adjusts diameter to negotiate line conditions.
• ROS – produces a close-fit uPVC liner in diameters from 800 mm to 1800 mm. The liner is re-enforced with steel encapsulation to offer enhanced stiffness and performance.
• PE – produces a fixed diameter, fully welded, steel reinforced HDPE liner in diameters from 300 mm to 3000 mm