| 摘要 |
<p>PURPOSE:To extremely easily remove a pipe body embedded in a building body without destroying it. CONSTITUTION:This is a pipe body which is embedded in a building body (B) made of concrete or the like, and a pipe main body 1 is composed of a plurality of blocks 2 divided in the axial direction, and at least one of the blocks 2 is a block 2b for decomposition use which can be removed from the other adjacent block 2a.</p> |
