| 摘要 |
PROBLEM TO BE SOLVED: To provide a junction length of crossover type double opened rubber ring socket with an existing drain pipe so as to match a specification value for a sewerage vinyl chloride pipe. SOLUTION: This crossover type double opened rubber ring socket 1 is constituted so that two rubber ring socket collars 2 and 2 are externally fitted on an insertion pipe body 3. Anti-loosening stoppers 6 and 7 for the rubber ring socket collars 2 are provided on both end parts of the pipe body 3 and by sliding the rubber ring socket collars 2 to the stoppers 6 and 7, a junction length the same or more than the specification value with the existing drain pipe can be secured.
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