GRE Pipe
GRE (Glassfiber Reinforced Epoxy) pipes are manufactured using high-performance fiberglass and epoxy resin through filament winding technology, ensuring excellent strength, corrosion resistance, and durability. Designed to perform in harsh marine environments, these pipes resist saltwater, chemicals, UV exposure, and mechanical stress.
Product Introduction
Our GRE (Glassfiber Reinforced Epoxy) pipes are manufactured using high-performance fiberglass and epoxy resin through filament winding technology, ensuring excellent strength, corrosion resistance, and durability. Designed to perform in harsh marine environments, these pipes resist saltwater, chemicals, UV exposure, and mechanical stress.
Widely used in ships and offshore platforms, GRE pipes are ideal for ballast systems, cooling water lines, fire protection networks, wastewater discharge, drinking water pipelines, and cargo oil transfer systems. Lightweight, low-maintenance, and highly reliable, they are the preferred solution for modern marine engineering needs.

Product Specification
| Specification | Details |
|---|---|
| Diameter Range | 3/2″ (38mm) – 8″ (200mm) |
| Pressure Rating | 2.5MPa – 32MPa |
| Standard Length | – DN ≤ 25mm: 1 meter/piece – DN 40mm: 3 meters/piece – DN 50mm – DN 250mm: 6 meters/piece – DN ≥ 300mm: 12 meters/piece – Custom lengths available upon request |
| Connection Type | Screw connection – simple & fast installation, high strength, and reliability |
Key Characteristics of GRE Pipes
- Lightweight & High Strength
Easy to handle and install, while offering outstanding mechanical strength for demanding applications. - Superior Corrosion Resistance
Specifically engineered for long-term exposure to seawater and harsh marine environments, ensuring reliable and durable performance. - Wide Temperature Tolerance
Operates effectively within a temperature range of -45°C to 120°C, making it suitable for diverse environmental conditions. - Smooth Internal Surface
With a low roughness coefficient of 0.0084, the inner wall ensures smooth fluid flow, reduces fouling, prevents secondary contamination, and minimizes operational and maintenance costs. - Marine-Grade Fire Resistance
Meets IMO A.753(18) Level-3 fire resistance standards, providing enhanced safety in shipboard and offshore installations.
Applications
GRE pipe is used in the field of ships and offshore platforms, including ballast systems, cooling water, fire protection, wastewater, potable water, and cargo oil pipelines.



Hengshui Jiubo Composites Co., Ltd. is a leading manufacturer of chemical equipment and fiberglass composite products. We specialize in turnkey solutions for potassium sulfate, sodium sulfate, sulfuric acid, and calcium chloride production lines, as well as FRP pipes, tanks, cooling towers, molded & pultruded products, and complete FRP production machinery.
Beyond manufacturing, we offer material selection, structural design, technical consultation, material supply, transportation, and installation supervision to support our customers’ needs. Now we have 300 employees, with an annual production capacity of 20,000 tons of fiberglass-reinforced plastic products.
With ISO9001, ISO14001, ISO45001, and SGS certifications, we ensure high-quality standards. Our products are exported worldwide, including the U.S., Canada, Australia, Brazil, Japan, Germany, Russia, India, and Egypt, earning global customer trust.
Our Products & Services:
- EPC Solutions: Complete chemical production lines for potassium sulfate, sulfuric acid, etc.
- FRP Production Lines: FRP pipe & tank winding, pultrusion, and grating production lines.
- Fiberglass Products: FRP pipes, tanks, towers, electrolytic cells, cooling towers, and anti-corrosion solutions.
Through robust manufacturing, technological innovation, and comprehensive support, we deliver quality solutions globally and strive for enduring industry partnerships.









