FIRE-RESISTANT SOUND-PROOF PIPE

摘要

A fire-resistant sound-proof pipe which can be used for the piping of a water supply/drain system, an air conditioner, etc. of a building. The fire-resistant and sound-proof pipe is characterized in that a sound absorbing layer which contains an active component which increases the dipole moment value is provided between the inner pipe and a fire-resistant layer. The pipe has an unprecedented excellent sound-proof performance.