| 摘要 |
PURPOSE: A marine culturing prop pipe with nodes and a production method thereof are provided to allow the prop pipe to be used for a long time by preventing the bending of the prop pipe to thus increase the time until the prop pipe is replaced. CONSTITUTION: A plurality of discs(4) are fixed and attached at constant intervals to the inside of a trunk portion(2) of the prop pipe(1) in a manner that the discs(4) made of synthetic resin and having grooves formed along the circumference are inserted into the prop pipe by a piston and then are fused using a high frequency or a temperature difference between the inside and outside of the prop pipe(1), thereby forming nodes.
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