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FRP PIPE FITTINGS, SPECIAL-SHAPED PARTS,PROFILES
Fiberglass flanges are indispensable key connecting components in fiberglass piping systems, used to connect and seal pipe sections to each other, and pipe sections to valves, pumps, or other equipment. Designed for corrosive and demanding environments, fiberglass flanges offer a superior alternative to traditional metal flanges due to their lightweight structure, high strength, and excellent chemical resistance.
Products Description
Fiberglass flanges, also known as FRP (Fiberglass Reinforced Plastic) flanges, are essential components used in piping systems to connect pipes, valves, pumps, and other equipment.
Designed for corrosive and demanding environments, fiberglass flanges offer a superior alternative to traditional metal flanges due to their lightweight structure, high strength, and excellent chemical resistance.
Our fiberglass pipe flangess are manufactured with advanced composite technology and comply with international standards, ensuring long-term performance and reliability.
Fiberglass flanges are indispensable key connecting components in fiberglass piping systems, used to connect and seal pipe sections to each other, and pipe sections to valves, pumps, or other equipment.
There are two main types of fiberglass flanges, which differ in structure and performance:
Advantages:
Highest strength: Integral molding, good structural integrity, and strong load-bearing capacity.
No leakage path: Avoids the bonding interface, resulting in extremely high sealing reliability.
Good fatigue resistance: Better able to withstand vibration and pressure fluctuations.
Manufacturing process: The flange is manufactured separately from the pipe, and then a high-strength adhesive is used to bond the flange to the outer wall of the pipe.
Advantages:
Flexible manufacturing and high production efficiency.
Lower cost.
Loose flanges facilitate alignment of bolt holes.
Summary
Fiberglass flanges are a precision and critical component in fiberglass piping systems. It perfectly inherits the corrosion-resistant properties of fiberglass, but its successful application depends heavily on proper selection (wound vs. bonded) and extremely standardized installation procedures (especially cross-tightening of bolts and torque control). When selecting and using it, it must be treated as a systems engineering project, not just a simple connector, to ensure the long-term, safe, and leak-free operation of the entire piping system.
Weld Neck Flange
High strength, ideal for high-pressure systems
Slip-On Flange
Easy installation, cost-effective for low-pressure use
Blind Flange
Used to seal pipe ends for maintenance or inspection
Socket Flange
Strong sealing performance with internal connection
Lap Joint / Loose Flange
Flexible installation for complex systems
Technical Specifications
Diameter: DN15 – DN3000
Pressure Rating: 0.6MPa – 2.5MPa
Temperature Range: up to 120–150°C
Material: Polyester / Vinyl Ester / Epoxy Resin
Standard: ANSI / DIN / JIS
| Feature | Fiberglass Flanges | Steel Flanges |
|---|---|---|
| Corrosion Resistance | Excellent | Poor |
| Weight | Lightweight | Heavy |
| Maintenance | Low | High |
| Cost | Cost-effective | Higher lifecycle cost |
| Electrical Conductivity | Non-conductive | Conductive |
Custom Fiberglass Flanges Solutions
01
Custom sizes & thickness
02
03
Different resin systems
04
Special anti-corrosion design and Fast delivery for bulk orders
Key Features of Fiberglass Flanges
▶ Excellent Corrosion Resistance
Excellent resistance to acids, alkalis and chemicals
▶ Lightweight & Easy Installation
Reduces labor costs and installation time
▶ High Mechanical Strength
Suitable for high-pressure piping systems
▶ Long Service Life
Resistant to aging, UV, and harsh environments
▶ Low Maintenance
No rusting or frequent replacement required
▶ Customizable Designs
Available in different sizes, pressure ratings, and standards
Fiberglass Flanges Application
Fiberglass flanges are widely used in industries where corrosion resistance and durability are critical:
Chemical pipelines
Wastewater treatment systems
Seawater desalination
Offshore oil platforms
Food & pharmaceutical systems
✔ Factory direct price
✔ Strict quality control
✔ Global export experience
✔ Full range of FRP pipe fittings
✔ Fast response within 24h
A fiberglass flange is a composite pipe connection component made of glass fiber and resin, used to connect piping systems.
Yes, especially in corrosive environments due to their non-rusting and lightweight properties.
Chemical, water treatment, marine, oil & gas, and power industries.
Typically 20–50 years depending on application conditions.
Let our team help you select the right product
Talk to our experts, we can help you meet your requirements and provide assistance for your next project.