EARTHQUAKE-PROOF AND FLEXIBLE DOUBLE JOINT

摘要

A flexible earthquake-proof duplex connecting pipe is provided to maintain the stable piping connected state by having an earthquake-proof and extension function with the compound action of rotating and sliding. A flexible earthquake-proof duplex connecting pipe comprises: a sliding pipe body(100) including a protruding part(120) and a stopper mounting groove(130) in the outer circumference for sliding(110); a first stopper(500) of the ring type protruding in the outer circumference for sliding; a first ball type pipe having a first sphere outer circumference; a second ball type pipe in which a second sphere outer circumference is formed; a first watertight packing(910) mounted on a groove for the first watertight packing; and a second watertight packing(930) mounted on the groove for the second watertight packing.