To provide sound insulation piping having excellent water feeding, draining, and sound insulating performance, and fire resistance, in which vaporization of chemical substances is restricted, and in which performance is not deteriorated by rain water during storage or transport.
This sound insulation piping 1 comprises piping 2, a sound insulation layer 3 on the outer circumference of it, and a protective layer 4 on the outer circumference of it. The sound insulation layer 3 comprises at least one kind of sound insulating material selected out of a group of viscoelastic material, viscoplastic material, and foam material. The protective layer 4 comprises hard matter of at least one kind of a refractory substance selected out of a group of water-setting substances and gas-setting substances.
KISO OSAMU
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