Petrochemical companies have extensive pipeline systems for transporting various fluid media, and pipelines require support and fixing devices to ensure their safe operation.

Bearings are used in the hangers and supports of pipelines. For example, in some large overhead pipelines, in order to reduce the stress caused by thermal expansion and contraction of the pipeline, expansion joints with ball bearings are installed. When the pipeline expands or contracts due to temperature changes, ball bearings can allow the pipeline to move freely within a certain range, avoiding deformation, rupture, and other situations caused by excessive constraints. At the same time, bearings are also used at the rotating joints of some pipelines to ensure smooth fluid transportation during the rotation process. This application is very important in some pipeline systems that require flexible connections, such as the loading and unloading arm in refineries. When connecting pipelines of tank trucks or ships, it achieves flexible rotation through the bearings at the rotating joints, which facilitates loading and unloading operations.