| 摘要 |
PROBLEM TO BE SOLVED: To provide an olefinic resin joint capable of positively being fusion-bonded, which can be used under high pressure without concentrating stress on a gap part of the joint even when high pressure is applied to the inside of piping, easily positioned or aligned when fixing the joint with a clamp upon fusion bonding, and capable of preventing the joint from slipping and coming off of the clamp during fusion bonding. SOLUTION: The olefinic resin joint 1 has a receiving part 4 wherein an end of the olefinic resin pipe 3 and/or joint is inserted into, and which is fusion-bonded. When D denotes the outer diameter of the insertion part 2 of the pipe 3 and/or joint, L the length of the receiving part 4 of the joint 1, A the length of the straight part from the end of the receiving part 4 of the joint 1 to the center, andθthe joint 1 when it is a curved pipe joint, the relationship (1) 0.25D<L<0.32D; (2) 0.08D(1+sinθ)<Z; (3) 140≤D≤1,000 is realized. COPYRIGHT: (C)2005,JPO&NCIPI
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