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Our PVC-lined FRP GRP composite pipe is an innovative dual-material piping solution that combines the exceptional chemical resistance of PVC with the high mechanical strength and temperature tolerance of fiberglass-reinforced plastic (FRP). This advanced GRP composite pipe for corrosive media is specifically designed to address the limitations of single-material pipes, providing a cost-effective alternative to expensive stainless steel and alloy piping systems for industrial fluid transportation applications.
Manufactured using a proprietary lamination and winding process, our PVC FRP composite pipe features a seamless high-quality hard PVC inner liner that provides excellent corrosion protection, reinforced by an external FRP structural layer that delivers superior tensile strength, pressure resistance, and impact resistance. The interface between the PVC liner and FRP layer is specially treated with a unique amphiphilic adhesive that creates a permanent, inseparable bond, preventing delamination and ensuring long-term structural integrity. As a versatile FRP duct for chemicals, our composite pipes can be customized to meet the specific requirements of different industrial processes and operating conditions.
The seamless PVC inner liner of our corrosion-resistant composite pipe provides excellent resistance to a wide range of acids, alkalis, salts, and organic solvents. This makes it ideal for transporting highly corrosive media that would rapidly degrade metallic pipes.
The external FRP reinforcement gives our high-strength FRP pipe tensile strength greater than that of steel, while remaining significantly lighter. This combination of strength and lightness allows for longer pipe spans, reduced support requirements, and easier handling and installation.
Unlike pure PVC pipes, which have limited temperature resistance, our PVC-lined fiberglass pipe can operate continuously at temperatures from -40°C to 90°C, significantly expanding the application range of PVC-based piping systems.
Our composite pipes offer comparable or better performance than stainless steel pipes at a fraction of the cost. They can replace 304, 316, and even higher-grade stainless steel pipes in most corrosive media applications, providing substantial capital cost savings for industrial facilities.
The physical and chemical properties of our customizable FRP composite pipe can be precisely adjusted by modifying the raw material combinations, layer thicknesses, and forming processes. This allows us to create optimized solutions for specific media, pressures, temperatures, and operating conditions.
Our composite pipes are lightweight and easy to cut, fit, and join using standard FRP piping techniques. The reliable bonding between the PVC liner and FRP layer ensures that joints maintain the same corrosion resistance and structural integrity as the pipe itself.
Parameter | Specification |
Material | PVC inner liner + FRP/GRP external reinforcement |
Manufacturing Process | Adhesive bonding + spiral/circumferential mechanical winding |
Adhesive System | PVC and FRP amphiphilic R adhesive |
Inner Liner Material | High-quality rigid PVC |
Reinforcement Material | E-glass fiber + unsaturated polyester resin |
Operating Temperature | -40°C to 90°C |
Operating Pressure | 0.6 MPa to 2.5 MPa |
Standard Diameters | DN25 to DN1000 |
Standard Lengths | 2m to 12m |
Connection Methods | Butt fusion, flange connection, socket connection |
Tensile Strength | >320 MPa |
Flexural Strength | >220 MPa |
Specific Gravity | 1.6-1.8 g/cm³ |
Our PVC-lined FRP composite pipe for corrosive media is widely used in various industrial sectors where reliable transportation of corrosive fluids is essential:
Oil and gas production facilities
Chemical processing plants
Pharmaceutical manufacturing
Metallurgical and mining operations
Power generation plants
Pulp and paper mills
Food and beverage processing
Environmental protection and wastewater treatment
Agricultural irrigation systems
Marine and offshore applications
All our PVC-lined FRP GRP composite pipes are manufactured under strict quality control procedures in accordance with international standards such as ISO 9001:2015, ASTM D2996, and GB/T 21238. Each production batch undergoes comprehensive testing, including hydrostatic pressure testing, burst pressure testing, tensile strength testing, and chemical resistance testing. We provide complete quality documentation with every shipment, including material certificates, test reports, and installation instructions. Our dedicated quality assurance team ensures that every pipe leaving our factory meets or exceeds customer specifications and industry requirements.
We use a specially formulated PVC and FRP amphiphilic adhesive that creates a molecular bond between the two materials. This adhesive penetrates both the PVC surface and the FRP resin, forming a permanent, inseparable interface that prevents delamination even under extreme temperature and pressure conditions.
Yes, we offer food-grade and drinking water certified versions of our composite pipes that comply with NSF/ANSI 61 and other international drinking water standards. These pipes use specially formulated PVC liners and resins that are safe for potable water applications.
PVC-lined FRP pipes have a seamless PVC inner liner that provides superior chemical resistance to many acids and solvents compared to pure FRP pipes. They also offer better abrasion resistance and lower friction coefficients. Pure FRP pipes, on the other hand, can withstand higher temperatures and are more resistant to certain chemicals that attack PVC.
Minor damage to the external FRP layer can be repaired using standard FRP repair techniques. For damage to the PVC liner, we provide specialized repair kits and training that allow for quick and reliable on-site repairs without replacing the entire pipe section.
