| 摘要 |
PROBLEM TO BE SOLVED: To reliably fix a ribbed pipe into an enlarged-diameter socket with its pipe axis aligned therewith by simply connecting the ribbed pipe to a pipe body with the enlarged-diameter socket without requiring much labor. SOLUTION: The pipe body with the socket has an enlarged-diameter socket portion to which a spigot of the ribbed pipe is connected. Herein, a plurality of protruded pieces protruded toward the pipe center is arranged on the inner face of the root of the enlarged-diameter socket portion at mutual predetermined spaces along the peripheral direction. The spigot is fitted at its front end to the front ends of the protruded pieces. COPYRIGHT: (C)2008,JPO&INPIT
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