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No flow diversion or open-cut excavation needed for repairs? Spiral winding is just that amazing!

Nationwide is adopting trenchless spiral winding technology to rehabilitate aging sewage and stormwater pipes with minimal excavation and reduced public disruption.

Trenchless, Live-Flow Repair Technology for Mechanically Wound Spiral-Wound Pipes

Principle of the spiral winding process: Factory-prefabricated PVC-U profiles and steel strips are fed simultaneously from surface equipment into a winding machine pre-installed in a manhole, advancing via a spiral winding motion. During operation, the male and female interlocking edges of the profiles lock together while the steel strip is pressed into the seam, continuing until the next manhole is reached. Cement grout is then injected into the annular space between the new liner and the old pipe, ultimately forming a new pipeline characterized by high strength and excellent watertightness.

Rehabilitation Using Steel-Plastic Composite Reinforced Spiral-Wound Pipe

This technology utilizes a stationary mechanical spiral-winding process to perform trenchless rehabilitation by creating a new liner pipe inside the target pipeline.

FIPP Liner Rehabilitation: The Invisible "Pipeline Doctor"

At the core of FIPP technology is a process where a high-density polyethylene (HDPE) base material is heated and stretched into a flexible hose, then inverted and inserted into the existing pipeline using air pressure; upon cooling, it forms a "pipe-within-a-pipe" composite structure. This process endows the rehabilitated pipeline with three key advantages:

How do you choose a professional PVC profile production line manufacturer?

In the field of trenchless machinery manufacturing, a professional PVC profile production line manufacturer is a key partner for enterprises seeking efficient production and cost control. Faced with a wide array of equipment suppliers, many manufacturers specializing in trenchless spiral-wound pipe rehabilitation are keenly interested in how to select high-precision PVC profile production lines and identify top-tier manufacturers.

Trenchless CIPP UV-Cured Pipe Rehabilitation

Say goodbye to the era of road-excavating pipe repairs. With the acceleration of urbanization, increasing importance is being placed on the health and safety of urban underground pipeline networks...