We provide a ductile iron ball type flexible expansion joint which was developed for the purpose of protecting pipeline from pulling out of jointed parts and/or damage which are caused by ground subsidence in reclaim d land and soft ground. In Taiwan, where we have a lot of earthquakes, Yung Yu receives a good reputation as an earthquake resistant flexible joint with highest expansion/contraction, non-slip resistance, joint deflection performances.e

All pipe connections / crossings on unstable terrain such as faults, landfills, swamps , tank connections and bridge abutment sall suffer some degree of damage from ground movement. This movement can be either gradually sudden, and places damaging shear and bending forces.In areas close to or within structures where differential movement can occur, pipe lines should rained and supported to isolate and accommodate movement in a controlled manner at a designated location.

Flexible Expansion Joints provide pipe line protection from the stresses produced by these forces with their ability to deflect up to 30 degree in any direction while simultaneously expanding or contracting.

Our Flexible Expansion Joints are available in sizes from 3 inches through 60 inches and can be used on Ductile, Steel or PVC pipeline.