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The core advantages of Continuously Wound Pipe lie in its high strength and rigidity, excellent corrosion resistance, superior hydraulic performance, superior leak prevention, and the cost-effectiveness and length advantages offered by continuous production. It seamlessly integrates material science with advanced manufacturing processes, offering a high-performance, cost-effective, and environmentally friendly modern engineering piping solution. Filament wound fiberglass pipe is particularly well-suited for long-distance, high-flow, and corrosive transportation.
Products Description
Filament wound fiberglass pipe is a composite pipe manufactured using a continuous winding process. It uses a resin matrix and glass fiber as reinforcement. Some types Continuously Wound Pipe incorporate quartz sand as a sand layer to increase rigidity.The Continuously Wound Pipe is manufactured using a process called filament winding, where continuous fiberglass filaments are wound around a mandrel in a specific pattern to create the desired shape and thickness.
Technical characteristics and process principles
Continuous Winding Process:
Core Process: A spiral-shaped mandrel drives a steel belt to form a continuously moving inner core mold. Fiber winding, resin impregnation, sand inclusion (optional), and curing are simultaneously completed on the core mold, ensuring uninterrupted production.
Compared to traditional processes: Compared with fixed-length winding (segmented production), continuous winding is more efficient (taking DN1000 pipe as an example, the single-line production capacity is ≈ 5 fixed-length winding lines), and the pipe length can be customized, reducing the number of interfaces and the risk of leakage.
Multi-layer composite wall structure:
01
Inner lining
Resin-rich layer (resin content ≥ 90%), for corrosion and leakage resistance;
02
Structural layer:
Continuous fiber circumferential winding provides strength, while a sand layer (quartz sand + resin) enhances rigidity;
03
Outer protective layer
UV and environmental corrosion resistance.
04
Key parameters
Sand content, winding angle (usually ±55°), and fiber volume fraction (25% is the optimal range for anti-seepage) directly impact pipeline rigidity (SN1250SN10000 grades) and pressure resistance (0.1-2.5 MPa).
Core Performance Advantages:
| Feature | Specific Manifestations | Applied Value |
| Lightweight and High-Strength | Weighing only one-quarter the weight of steel pipe, it's far stronger than cement pipe, making it easy to transport and install. | Reducing lifting costs and shortening construction time. |
| Corrosion-resistant | Resistant to acid, alkali, salt spray, and seawater chloride ions, with a service life of ≥50 years. | Replaces metal pipes, reducing maintenance costs. |
| Excellent hydraulic performance | The smooth inner wall (roughness coefficient 0.0084) minimizes flow loss, allowing the pipe diameter to be reduced by 10%-25% for the same flow rate. | Energy-saving long-distance water transportation and reduced pumping consumption. |
| Deformation resistance | Excellent circumferential flexural performance allows it to withstand high deformation without cracking and adapts to foundation settlement. | Highly safe for installation in seismic zones and soft soil areas. |
Cost-Effective: Fiber wound epoxy pipelines are generally more affordable than traditional metal pipes.
Long Service Life: FRP Pipes offer decades of reliable performance with minimal maintenance.
Low Installation Costs: Lightweight and easy to handle, FRP pipes reduce labor and installation expenses.
Easy to Repair: Field repairs are simple, minimizing downtime and maintenance costs.
Overall, Continuously Wound Pipes combine excellent corrosion resistance, high mechanical strength, and low maintenance requirements, making them an ideal choice for a wide range of industrial applications.
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Main Application Scenarios
Continuously Wound Pipe has become the dominant material for long-distance pipelines due to its efficient production, excellent corrosion resistance and excellent engineering adaptability.
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