| 摘要 |
PROBLEM TO BE SOLVED: To connect connection pipes of lined steel pipes and the like while preventing water leakage and corrosion. SOLUTION: A pipe fitting comprises a fitting body 20 having a penetration part, a socket 30, which has an opening part for inserting a lined steel pipe 100 and is mounted on a fitting body 20 coaxially, and an incore 40 made of a resin material arranged coaxially inside the fitting body 20 and the socket 30. The incore 40 is provided with a cylindrical core body 41, which is inserted inside the lined steel pipe 100, a flange part 42, which protrudes from the outside circumferential surface of the core body 41 to the outside diameter side, and a support cylindrical part 43, which is extended from the flange part 42 toward the opening of the socket 30, supports the inside circumferential surface of the socket 30 with the outside circumferential surface as well as the outside circumferential surface of the lined steel pipe 100 with the inside circumferential surface. COPYRIGHT: (C)2009,JPO&INPIT
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