Within the host pipe to be rehabilitated, a self-propelled machine is erected and deployed. The PVC profile strips are prefabricated at the factory and transported to site, then fed into the manhole. The self-propelled unit winds these profiles into a brand-new pipeline. This specific machine operates in close contact with the inner wall of the host pipe during construction, thereby eliminating the need for subsequent grouting. This method is suitable for circular pipelines with a diameter range of DN1000–DN1800.

—  It is capable of rehabilitating large-diameter pipe materials and is specifically designed for circular pipes with a diameter range of DN1000–DN1800.

— Live-Flow Operation: Suitable for installations with water levels up to 70cm and flow velocities up to 1m/s.

— Small Footprint: Utilizes existing manholes for access; no large excavation or extensive working pits required.

—  Operational Flexibility: Construction can be interrupted and resumed at any time. The PVC profiles can be cut or reconnected at any time, allowing for highly flexible construction scheduling and phased/interleaved operations. This minimizes the impact on public traffic to the greatest extent possible (providing an effective response to emergency repairs, rainfall, or the temporary restoration of traffic flow following road control measures).

— By applying this process to aging existing pipelines, a "pipe-in-pipe" structure is formed to restore structural integrity.

—  Stable Quality: Prefabricated profiles from the factory combined with onsite mechanical winding ensure consistent quality.

—  Cost-Effective: Superior to open-cut methods, saving on both investment costs and project duration.

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No. 35 Caoli Road, Jinshan District, Shanghai, China