Rotary flange expansion joints are one of the axial expansion joint types and are special expansion elements that absorb thermal expansions occurring in the pipeline along the axis. These expansion joints minimize the stresses and structural loads that may occur in the pipes by controlling the longitudinal extensions and contractions occurring in the system.

Piping systems are usually divided into different expansion sections and stabilized with fixed points placed at strategic points. In this way, the thermal movement occurring in a certain area is met only by the axial expansion joint placed specifically for that area. In this way, both the integrity of the system is preserved and energy loss and maintenance requirements are reduced.