Weld-neck expansion joints are a type of axial expansion joint designed to absorb thermal expansion occurring in pipelines in the axial direction. These components are particularly preferred in high-pressure and high-temperature applications, contributing to the long-lasting and safe operation of the system.

In systems engineering, pipelines are typically divided into different expansion zones, separated from each other by fixed points. Thanks to this structural solution, thermal movement in each expansion zone is controlled solely by the axial expansion joint placed within that specific zone.

The weld-neck design ensures a stronger and leak-proof connection to the pipeline. This enhances durability, especially in environments with vibrations or significant temperature differences. The secure welded connection provides more stable load transfer within the system and minimizes the risk of loosening or deformation at connection points.