FRP-Plastic Composite Pipe
FRP-Plastic Composite Pipe is a high-performance pipe that combines glass fiber reinforced plastic (FRP) with thermoplastics (such as HDPE, PP, PVC, etc.) through a special process. It has the high strength and corrosion resistance of FRP and the flexibility and sealing of plastics, and is widely used in harsh environments such as chemical, municipal, and marine.
Features & Advantages
Mechanical properties
Tensile strength ≥ 200MPa, ring stiffness ≥ SN5000, pressure bearing capacity can reach 1.6-4.0MPa.
Corrosion resistance
Can withstand acid, alkali, salt spray, organic solvents, etc., with a service life of more than 30 years (3-5 times that of ordinary steel pipes).
Lightweight and high strength
The density is only 1/4 of that of steel pipes, which is easy to install and reduces transportation costs.
Fluid characteristics
The inner wall is smooth (roughness coefficient 0.0084), and the flow rate is 20%-30% higher than that of metal pipes.
Environmental adaptability
Working temperature: -40℃~120℃, some models can withstand higher temperatures.
Product Performance
- Synergistic effect of dual materials: The plastic layer is anti-seepage and anti-corrosion, and the fiberglass layer is pressure-resistant and impact-resistant, solving the limitations of a single material.
- Long life and low maintenance: No need for cathodic protection, no painting, and reduced downtime maintenance costs.
- Customized design: Adjustable resin type (such as corrosion-resistant vinyl ester resin) and fiber layer thickness to adapt to different working conditions.
- Environmental protection and energy saving: Production energy consumption is lower than that of metal pipes, 100% recyclable, and meets green building standards.
Production Process
Inner lining preparation
Using extrusion molding technology, HDPE/PP/PVC and other plastics are made into smooth and dense inner pipes to ensure the sealing and chemical resistance of medium transportation.
Reinforcement layer winding
Glass fiber yarn is coated on the outer surface of the plastic inner pipe through a winding process, impregnated with epoxy resin or unsaturated polyester resin, and cured to form a high-strength structural layer.
Process type: spiral winding (compression resistance), circumferential winding (internal pressure resistance), cross winding (comprehensive reinforcement).
Outer protective layer
Add anti-ultraviolet, weather-resistant coating or gel coating to improve the anti-aging performance of the pipeline.
Curing and testing
After high-temperature curing, water pressure test, ultrasonic flaw detection and other quality tests are carried out to ensure no leakage and no delamination.
Application Area
Chemical industry: Acid/alkali transmission pipelines, exhaust gas treatment tower connecting pipes.
Municipal engineering: Water supply and drainage network, reclaimed water reuse, fire protection pipelines.
Ocean and ships:Seawater desalination pipelines, dock anti-corrosion pile pipes.
Power and energy: Power plant desulfurization system, oil and gas field corrosive medium transportation.
Mining and metallurgy:Slurry transportation, tailings discharge pipelines.
WHY CHOOSE US
Glass fiber reinforced plastic composite pipes are gradually replacing traditional metal pipes and pure plastic pipes with their excellent corrosion resistance, lightweight design and long life. Our factory adopts automated production lines and strictly follows international standards such as ISO and ASTM to provide customers with full-specification products and customized solutions from DN50 to DN3000.
If you need technical parameters or case materials, please feel free to contact us!