| 摘要 |
PROBLEM TO BE SOLVED: To economically manufacture a fluid tube with a spiral guide passage by providing the guide passage with a large number of pitches in a tube body. SOLUTION: In the case of manufacturing the fluid tube with the guide passage having a spiral guide passage for spirally guiding fluid in a straight tube-like tube body, a plurality of spiral guide passage pieces 12a corresponding to 0.5 pitch of the passage 12 are previously manufactured by glass fiber- reinforced resin, the pieces 12 are connected to each other to manufacture the passage 12. And, the manufactured passage 12 is inserted into the tube body 11 to connect an outer peripheral edge of the passage 12 to an inner peripheral surface of the body 11. |
