Applications of Expansion Joints in Gas Pipelines:
Gas pipelines, especially those for self-contained gasifiers and kilns, experience significant expansion and contraction due to the heat generated by the gas itself. This expansion and contraction can be substantial as the gas temperature changes. Therefore, installing expansion joints is essential to alleviate pipeline stress and tension. Expansion devices and expansion joints are also frequently installed on pipelines at cold gas stations over long distances to mitigate the tension caused by thermal expansion and contraction.
Expansion joints are also used in offshore oil and gas drilling, for example, in deepwater drilling riser systems. In 2026, CNOOC (China National Offshore Oil Corporation) deployed expansion joint equipment in its 1500-meter deep-water drilling riser system.
