Fiberglass Flange

There are two main types of FRP flanges, differing in their structure and performance:

1. Integral Flange

Advantages:

Highest strength: Molded as a single piece, they offer excellent structural integrity and high load-bearing capacity.

No leak path: They eliminate bonding interfaces, resulting in extremely reliable sealing.

Excellent fatigue resistance: They can better withstand vibration and pressure fluctuations.

2. Bonded Flange / Loose-Sleeve Flange

Manufacturing Process: The flange is manufactured separately from the pipe and then bonded to the pipe using a high-strength adhesive.

Advantages:

Flexible manufacturing and high production efficiency.

Lower cost.

Loose-sleeve flanges facilitate alignment of bolt holes.

Summary:

FRP flanges are a precise and critical component in FRP piping systems. While it perfectly inherits the corrosion resistance of fiberglass, its successful application relies heavily on proper selection (wrap-around vs. bonding) and rigorous installation practices (particularly cross-tightening and torque control of bolts). When selecting and using this type of pipe, it's crucial to consider it as a systemic project, not just a simple connector, to ensure the long-term, safe, and leak-free operation of the entire piping system.