| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sound insulating cover for a collecting pipe, having improved constructing efficiency while hardly causing a variation in quality. <P>SOLUTION: The flexible sound insulating cover 20 for the collecting pipe is arranged on the collecting pipe having a branch pipe connection opening in a pipe peripheral wall portion in the state of covering the pipe peripheral wall portion. At a site opposed to the branch pipe connection opening, a through-portion forming cutting position indicating mark 23 is provided for developing a through-portion in which the branch pipe connection opening or a branch pipe to be connected thereto is arranged in an inserted-through or approximately inserted-through state, with cutting operation. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
