| 摘要 |
PURPOSE: A device for manufacturing a spiral tube is provided to improve the intensity and durability of the spiral tube by changing the structure of a cooling pipe. CONSTITUTION: In a device for manufacturing a spiral tube, an inclined surface of a bent unit(15) and separating units(6,6') are formed from the middle part to the end of a body unit(17) of a cooling pipe(5). Compressing rollers(9,9') bend a tube through both sides of the bent unit.
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