Dual lamination piping

FRP reinforced PP pipe

FRP-reinforced PP pipe consists of a PP inner lining and an FRP outer layer. The inner PP layer is made of food-grade polypropylene, resistant to acids and alkalis (pH 1-14), with a working temperature range of -20℃ to 110℃, suitable for conveying highly corrosive media. The outer layer is reinforced with FRP, with a tensile strength ≥200MPa and a circumferential to longitudinal strength ratio as high as 3:1, significantly improving the pipe's compressive strength. FRP-reinforced PP pipe combines the chemical corrosion resistance of PP with the high strength of FRP, and is widely used in chemical, metallurgical, and environmental protection fields.

GRP reinforced PP flange

Glass-reinforced polypropylene (GRP) flanges are composite flanges that combine a polypropylene (PP) lining with a fiberglass (GRP) outer layer, integrating the advantages of both materials. They are suitable for conveying corrosive media, such as in chemical and environmental protection fields. The PP inner layer has excellent chemical corrosion resistance, including resistance to strong acids, strong alkalis, and organic solvents, with a suitable pH range of 1-14. The outer layer of GRP (Glass Reinforced Polypropylene) is reinforced with glass fiber, resulting in higher mechanical strength, a tensile strength ≥300 MPa, and a density only 1/4-1/5 that of steel. GRP-reinforced polypropylene flanges are manufactured using a one-step molding or bonding process, with flange inner diameters ranging from 20-1200 mm, and are compatible with polypropylene piping systems.

Features:

Corrosion Resistance:

Excellent resistance to various acids, alkalis, salts, and other chemical media, making it suitable for chemical, wastewater treatment, and other fields.

Lightweight and High-Strength:

GRP double-layer composite pipe fittings are 80% lighter than metal materials, with a circumferential tensile strength ≥300 MPa, making them suitable for long-distance overhead or underground installations.

Economical and Durable:

Due to its superior material properties, the service life typically exceeds 50 years, with low maintenance costs, reducing the frequency of replacement and maintenance.

Applications:

Chemical Industry:

Pipes can be used to transport various corrosive liquids, and fittings can be used to connect pipelines transporting acids, alkalis, salt solutions, and organic solvents.

Construction Engineering:

Used in drainage and ventilation systems, replacing traditional metal pipes.

Power Industry:

Used as protective conduits for power cables, ensuring safety and durability.

Environmental Engineering:

Double-layer composite pipe fittings are corrosion-resistant accessories for wastewater treatment and seawater desalination systems.

Food and Pharmaceutical Industries:

Also used in pure water and pharmaceutical delivery systems that meet hygiene standards.