What type of joints compensates for movement in steam piping due to temperature changes?

Expansion joints are specifically designed to accommodate changes in length and position that occur in piping systems due to temperature variations. When steam or any fluid is heated, it causes the pipes to expand; conversely, when the temperature drops, the pipes contract. Expansion joints provide the necessary flexibility to absorb these movements, thereby preventing stress and potential damage to the piping system.

These joints can be constructed from various materials and often include features such as bellows or flexible sections that allow for axial, lateral, or angular movements. By incorporating expansion joints into steam piping systems, engineers can ensure the integrity of the system remains intact despite the thermal expansion and contraction that occurs during regular operation.

Fixed joints, welded joints, and flanged joints do not serve the purpose of compensating for thermal expansion. Fixed joints are intended to provide rigidity and stability, while welded joints create a permanent connection that cannot adjust to movement. Flanged joints allow for assembly and disassembly but do not offer the flexibility needed to handle the expansion and contraction caused by temperature changes.