Expansion joints, essential in pipelines and machinery, accommodate thermal expansion, vibration, and movement. Types include Fabric Expansion Joints (flexible, durable, heat-resistant) and Bellow Expansion Joints (metallic, accommodating axial, lateral, and angular movements). Constructed from alloy materials and finished with galvanized surfaces for corrosion resistance, they maintain integrity under harsh conditions. Key components include the bellows, flanges, and sealing elements. Designed using advanced fabrication technologies like welding and rubber lining, these joints vary in dimensions to suit specific applications. Used in industries such as oil & gas, power plants, chemical, and HVAC, they ensure optimal performance and longevity in demanding environments.