Pipe Displacement Compensation Experts

Corrosion-resistant and pressure-resistant, ensuring long-lasting durability; flexible expansion joints that absorb shock and reduce noise.

Kaida Corrugated Pipe

2026-04-27

Yaoheba Hydropower Station on the Nanya River, Sichuan (Large Diameter + High Internal Pressure + Fault Displacement)

Yaoheba Hydropower Station on the Nanya River, Sichuan (Large Diameter + High Internal Pressure + Fault Displacement)

Operating Conditions: Pressure steel pipe DN4000, internal pressure 2.5 MPa, crossing a fault, radial displacement ±70 mm, 5 expansion joints.

Solution: Large-diameter thick-walled bellows (316L, wall thickness 12 mm) + limit rods, external reinforcement rings.
Results: Operated normally for 20 years, absorbed fault displacement, and prevented steel pipe rupture.
Key Points: Large-diameter, high-pressure systems must include reinforcement rings + stability verification + limit protection.

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