| 摘要 |
A connecting device 30 is provided with a die 1 divided into a plurality of die segments 2 centering around a wedge hole portion 11 in a circumferential direction, and a mandrel 20. Each die segment 2 of the die 1 is moved radially outward of the pipe 40 by a mandrel 20 to expand an expansion target portion 41 of the pipe 40. The die segment 2 is equipped with apiece 3 having a first pressing protruded portion 4 for pressing one of two predetermined portions 41b and 41b of the pipe 40, a die segment main body 6 having a second pressing protruded portion 7 for pressing the other portion 41b, and connection means 15 for connecting the piece 3 and the die segment main body 6 in a detachable manner.
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