| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal pipe coaxial line capable of absorbing the telescopic motion of a metal pipe thereby to suppress a dissatisfaction due to the telescopic motion of the metal pipe.SOLUTION: A metal pipe coaxial line comprises: an internal conductor 2 made of a cylindrical metal pipe; and an external conductor 3 made of a cylindrical metal pipe having an internal diameter larger than the external diameter of the internal conductor 2, wherein the internal conductor 2 and the external conductor 3 of a portion of the longitudinal direction thereof are constituted of bellows pipes 4 and 5 made of a metal. |
