| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin pipe capable of shortening the working hour without scraping work and stabilizing the fusion quality. SOLUTION: An photo-oxidation prevention coating 2 with an expiration date indication 3 is applied on the surface of a fusion end of the resin pipe 1 in the resin pipe 1 fusion jointed with electrical fusion joint. An aluminized film, a carbon impregnated polyethylene resin cap and a black paper preventing the transmission of an ultraviolet ray are used as the photo-oxidation prevention coating 2. When not in the term of the anti-oxidation, the connection of the resin pipe 1 can be done without scraping work.
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