| 摘要 |
PROBLEM TO BE SOLVED: To provide a flexible heat-resistant tube which has high heat resistance, flexibility, and durability. SOLUTION: This flexible heat-resistant tube is constructed by fitting a heat-resistant spring coil 3 formed into a spiral shape at prescribed pitches onto the outer periphery of a tubular inner tube 2 formed into a prescribed length out of a heat-resistant flexible member, and layering a tubular outer tube 4 formed into a prescribed length out of the heat-resistant material on the outside of the spring coil. Particularly, the inner tube 2 and the outer tube are structured by forming rectangular heat-resistant sheet into a tubular shape with a prescribed diameter respectively and sewing their jointed sections with the heat-resistant material or the like, thereby facilitating the production of the flexible heat-resistant tube.
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