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Double spheres rubber expansion joint is a flexible unit installed in piping systems to absorb vibrations and shock, relieve anchor stress, reduce noise, and compensate for misalignment. It is a pipeline connection with high elasticity, high air tightness, and excellent weather resistance.




Our products are designed, manufactured, and tested in strict accordance with DIN, BS, ISO, ANSI, API, and JIS standards. We offer custom services including pipe cutting, bending, and threading to meet specific industrial requirements.


Used in all systems conveying fluids under pressure or vacuum at various temperatures. Widely applicable in chemical, construction, water supply, petroleum, refrigeration, fire protection, and electric power projects.
Petra Pet