| 摘要 |
PROBLEM TO BE SOLVED: To reduce the possibility of breakage of a connection part of a bent pipe formed by butt-jointing one pipe member to the other pipe member. SOLUTION: The pipe body 5 is formed into a predetermined bending angle by butt-jointing respective inclined end surfaces of one pipe member 3 and the other pipe member 4. A reinforcing material 12 is laid on a bending side part 9.
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