| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe connection structure for improving the close contact of two pipes with each other to improve the sealing performance of these connection portions. SOLUTION: A first flange 11 of a first pipe 10 has a first bent portion 11a formed by reflecting one end of the first pipe 10 to the radial outside and a first taper portion 11b extending from the first bent portion 11a straightly to the other end. A second flange 21 of a second pipe 20 has a second bent portion 21a formed by unfolding one end of the second pipe 20 into a shape corresponding to the first bent portion 11a and a second taper portion 21b extending from the second bent portion 21a straightly to the side of the first pipe 10 to approximately correspond to the first taper portion 11b and being shorter than the first taper portion 11b. A fastener 30 has a fastening groove 31c for clamping the outside of the second bent portion 21a and the end of the first taper portion 11b. COPYRIGHT: (C)2006,JPO&NCIPI
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