| 摘要 |
A temporary pipe having a reinforcement form is provided to perform a joining operation with respect to a pipe with a higher coupling force to more stably and solidly construct a structure. A temporary pipe includes a plurality of reinforcement protrusions(11) and reinforcement grooves(12) that are alternately formed in a radial direction. The reinforcement protrusion(11) has a sectional surface of a round shape or in a polygon shape. The reinforcement groove is the same shape as that of the reinforcement protrusion(11). The number of the reinforcement protrusions(11) is a multiple of eight. The end of the reinforcement protrusion(11) and the end of the reinforcement groove(12) have a thickness between 4mm and 8mm.
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