FLEXIBLE EXPANSION JOINT AND MANUFACTURE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a flexible expansion joint excellent in a mechanical strength characteristic such as earthquake resistance and applicable to various fluid so as to be applied in a wide range. SOLUTION: A flexible expansion joint is provided with a flexible/expansive rubber hose 1 reinforced against external pressure, and a flexibly expansive and corrosion resistant metallic bellows inner cylinder 2 inserted in an inner hollow part of the rubber hose 1. Annular parts 4 lockable to both end parts of the rubber hose 1 from the outside in a pipe longitudinal direction and having corrosion resistant metallic sealing faces 4a facing the outside in the pipe longitudinal direction are formed at both end parts of the metallic bellows inner cylinder 2.