The GRE screen tube is made from continuous glass fiber reinforced with epoxy resin and fabricated through a precision winding process. After curing, the tube undergoes boring and slotting to achieve a uniform, smooth finish and optimal filtration efficiency.
Ideal for both geothermal wells and horizontal CBM wells, GRE screen tubes ensure long-term operation with low maintenance, combining excellent durability and mechanical strength with environmental safety.
Key Features of GRE Screen Tube
Glass-reinforced epoxy screen tubes are designed for performance in harsh environments, maintaining high strength under pressure while resisting chemical corrosion, scaling, and deformation.
- Corrosion Resistance: Built to withstand chemical and environmental corrosion, extending the lifespan of the system.
- High Strength-to-Weight Ratio: GRE screen tubes are lightweight and strong, simplifying handling, transport, and installation.
- Long Service Life: Excellent fatigue and pressure resistance for long-term operation in harsh subsurface environments.
- Easily Drillable: Facilitates later operations, such as drilling or maintenance.
- Safety and Reliability: Non-conductive and non-corrosive, eliminating safety risks often associated with metal screens.
- Low Job Costs: Reduces installation and maintenance expenses compared to steel alternatives.
Applications of GRE Screen Tube
- Water Source Wells: Provides durable and corrosion-resistant filtration for municipal, agricultural, and industrial water extraction.
- Geothermal Wells: In geothermal applications, GRE screen tubes perform reliably under extreme temperatures and harsh conditions.
- Coalbed methane (CBM) Wells: Our GRE screen tubes are designed to offer effective sand control and pressure resistance in horizontal applications.
- Industrial Use: Suitable for use in chemical and energy industries where corrosion resistance and long lifespan are essential.
Technical Specifications
| Nominal Diameter | Thread Spec. | ID (mm) | Coupling OD (mm) | Nominal Length (m) |
| 3 1/2 in | 4 1/2 in | 76 | 124 | 9.0 |
| 7 in | 8 1/4 in | 164 | 234 | 8.5 |
| 8 5/8 in | 9 5/8 in | 209 | 272 | 8.5 |
- Pressure Rating: 10 MPa – 25 MPa
- Material: Glass fiber reinforced epoxy resin
- Standard: SY/T 6267-2006 Glass Fiber Pipeline Specification
Note: The above parameters represent general GRE screen tube information and are based on standard materials and design conditions. Custom sizes and configurations can be produced according to customer requirements.
Certification & Quality Assurance
All Glass-Reinforced Epoxy screen tubes are manufactured under strict quality control and inspection standards.
- Compliance with SY/T 6267-2006
- Thread connection and coupling precision ensured during production
- Mechanical and pressure testing performed before shipment
Price (per meter)
Contact us for a quotation.
Frequently Asked Questions
1. What makes GRE screen tubes different from traditional steel screens?
GRE screen tubes offer superior corrosion resistance, reduced weight, and easier installation compared to steel. They do not rust or scale, making them ideal for long-term underground use.
2. Can GRE screen tubes be used in high-pressure wells?
Yes. With pressure ratings between 10 MPa and 25 MPa, GRE screen tubes are suitable for deep wells and high-pressure environments.
3. Are GRE screen tubes suitable for CBM applications?
Yes. The CBM well GRE screen tube design provides excellent filtration and durability in methane extraction wells, even under abrasive conditions.
4. Can CNPS provide customized dimensions or designs?
Yes. CNPS manufactures industrial fiberglass solutions and GRE screen systems tailored to customer-specific requirements.
Partner With Us Today
Looking for glass-reinforced epoxy screen tubes that combine high performance, corrosion resistance, and cost efficiency? CNPS provides GRE screen tubes designed for demanding well applications, ensuring reliable operation and longevity. Contact us today for detailed specifications, custom manufacturing options, and expert support for your project.

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