| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a composite tube that can be readily connected and properly display information, and to provide a composite tube connection structure. <P>SOLUTION: The composite tube 10 includes: a resin inner tube 12 with a gauge line 12 (information) indicated in the exterior surface thereof; and a coating layer 14 which is formed around an outer periphery of the inner tube 12 and has an outer diameter connectable to a pipe joint 20 that is an object to be connected, and through which the information indicated on the inner tube 12 is visible from the outside. <P>COPYRIGHT: (C)2013,JPO&INPIT |
