concentric reducing rubber expansion joints ，EPDM rubber expansion joint, oil-resistant NBR rubber expansion joint,
butyl rubber expansion joint, chloroprene rubber expansion joint.
The center lines of the two types of expansion joints with different diameters are the same.
In addition, they also have the features of absorbing large-scale and all-round displacements,
reducing noise and vibration, having a cycle life of tens of millions of times,
compensating for misalignment, facilitating the maintenance of pipelines and equipment, and alleviating the stress on pipelines and anchors.
The pipe body adopts a structure of full rubber flanges, high-grade leak-proof rubber tubes,
multiple layers of high-strength tire cord, high-strength steel wire reinforcement,
a seamless outer cover and hot-dip galvanized steel retaining rings.
