| 摘要 |
PROBLEM TO BE SOLVED: To reduce frictional resistance between a nut and a thin wall stainless steel pipe, in connecting the thin wall stainless steel pipe and a joint with the nut.SOLUTION: In a connection mechanism of a thin wall stainless steel pipe and a joint, a nut 3 is screwed into a joint 2 while contacting with one inclination surface 5 of a crest type projection part 7 of a thin wall stainless steel pipe 1, and forms a convex part 15b in a second cutout part 15, and thereby the contact part of the nut 3 with the one inclination surface 5 of the crest type projection part 7 is formed such a shape that linearly contacts with the one inclination surface 5 of the crest type projection part 7.SELECTED DRAWING: Figure 1 |
