| 摘要 |
<p>PURPOSE: To raise efficiency of assembling by covering a plurality of inner pipes with laminated heat insulating materials and partially supporting the laminated heat insulating materials by spacers. CONSTITUTION: Laminated heat insulating materials 12a, 12b are mounted respectively in inner pipes 3, 4. The laminated heat insulating materials are partially supported by spacers 9. In this way, even if the precision of the inner diameter of a shield pipe 13 is low, the inner diameter error is absorbed by the laminated heat insulating materials. Therefore, mating processing is not necessary in assembling and it is possible to raise the efficiency of assembling.</p> |
