| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide soundproof piping able to exert favorable sound insulating properties even in the condition where it is bent or deflected. <P>SOLUTION: The soundproof piping 10 is equipped with a body pipe 11 bending freely, a first covering 21 formed by winding spirally a first soundproof material 22 on the body pipe 11, and a second covering 31 formed by winding spirally a second soundproof material 32 on the first covering 21. The second soundproof material 32 is arranged covering the side edges of each section of the first soundproof material 22 between the adjoining sections of the first soundproof material 22. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
