| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pipe in which a space is minimum, excessive fixing fittings, etc. is unnecessary, a construction can be down quickly and a thermal insulation effect is also high. <P>SOLUTION: A thin two-layer tube includes the pipe having a sectional shape of thin ellipse or long rectangular profile and made of resin of two layers or aluminum having excellent thermal insulation. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
