| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a refractory pipe body easily preventing heat from transferring from outward of the refractory pipe body to a thermal expansion material.SOLUTION: A refractory pipe body 11 includes a resin pipe body 21, and a thermal expansion material 31 thermally expanding by heating in fire. The thermal expansion material 31 is arranged along the inner peripheral surface of the resin pipe body 21. The refractory pipe body 11 is connected to a partition part penetration pipe 91 having refractory. The refractory pipe body 11 preferably includes a resin protective member 41 protecting the thermal expansion material 31. The resin protective member 41 has a body part 42 covering the inner peripheral surface of the thermal expansion material 31.</p> |
