| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a fire retarding division through member, facilitating work execution capable of reducing in cost ad much as possible. SOLUTION: A thermal expansion material 2 is formed into a cylindrical shape also a slit 3 is formed in a lengthwise direction of this thermal expansion material 2, and it is formed capable of being opened into C-shape from this slit 3. This slit 3 is opened to insert piping, cables, etc., into the inside from this opening, so as to be made mountable.</p> |
