| 摘要 |
PURPOSE: A dual pipe and a manufacturing method thereof are provided to improve the intensity of the pipe with preventing corrosion in the pipe as a stainless pipe with excellent corrosion resistance is used as an inner pipe. CONSTITUTION: A dual pipe comprises a stainless pipe(100), an outer pipe(200), and an adhesive layer(300). The outer pipe comprises a larger diameter than the stainless pipe's diameter, and surrounds the outer periphery of the stainless pipe. An uneven portion is formed on the inner surface of the outer pipe. The stainless pipe is formed along the uneven portion. The adhesive layer is formed on the inner surface of the outer pipe and the outer surface of the stainless pipe.
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