Spiral Wound Lining (SWL) System

- SWL systems can be installed in live flow conditions for gravity pipes only
- Usually used where temporary bypass is an issue
- SPR™ is made of steel encapsulated PVC mechanical interlocking strips
- Applicable to circular and non-circular pipes with diameter / dimension from 450mm to 5000mm.
- Able to negotiate longitudinal bends & curvature radius of 5D or above.
- SPR™PE is made of HDPE material via automated fusion process, it can be done up to diameter 3000mm for circular pipes only
- The use of Steel and HDPE material achieves a liner with high strength and superior chemical resistance. (HDPE is an inert material)
- Can be designed as fully- or semi-deteriorated pipe conditions based on international design standards
SPR™ System

SPR™ winding process

Lining in live flow condition

Grouting Process

Completed SPR™ Lining
SPR™PE System

SPR™PE winding process

Lining in live flow condition

SPR™PE Lining complete at pipe face

SPR™PE Control System

Completed SPR™PE Lining

Completed SPR™PE Lining