What is Fold-and-Form Trenchless Technology?

Fold-and-Form Pipe Lining Technology is an innovative trenchless pipeline repair method that utilizes the unique thermoplastic property of polymers—allowing them to be repeatedly softened by heat and shaped upon cooling.

During field installation, a factory-preformed thermoplastic liner is pulled into the existing host pipe. Using specialized heating equipment, the liner is heated and pressurized to expand, conforming tightly to the inner wall of the host pipe before cooling down to form a structural, close-fit new pipe. This technology effectively addresses issues such as corrosion, offset joints, dimensional changes, and leakage across various host pipe materials—including concrete, cast iron, and HDPE—making it suitable for structural rehabilitation of both gravity and pressure pipelines.

Key Advantages

1. High Structural Strength: The fully cured liner possesses superior mechanical strength, capable of independently withstanding external loads such as hydrostatic pressure, soil pressure, and traffic loads. For pressure pipes where the host pipe structural integrity remains intact, it provides exceptional internal pressure resistance and sealing.

2. Superior Hydraulic Performance: The liner features a smooth inner surface and excellent corrosion resistance, significantly reducing fluid friction and improving flow capacity.

3. Broad Application Scope: Excellent sealing capabilities and material flexibility make this technology versatile for overall drinking water, wastewater, and high-pressure network restoration.

Anyue Integrated Fold-and-Form Solutions

As a leading innovator in trenchless pipeline rehabilitation, Anyue manufactures premium fold-and-form thermoplastic liners covering diameters from DN100 to DN1200, with pressure ratings up to 16 bar.

Anyue’s thermoplastic liners strictly comply with global quality and health standards, holding major international certifications including NSF/ANSI-61 (Drinking Water System Components), WRAS (UK), and SPAN. Our products are fully qualified for municipal drainage, sewer, potable water, and high-pressure pipeline rehabilitation projects worldwide.

Beyond delivering high-performance materials and advanced equipment, Anyue provides comprehensive technical training and step-by-step on-site guidance, delivering reliable, efficient, and complete end-to-end solutions for global partners. If you're interested, feel free to ask for more details via info@anyuetrenchless.com.