| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe, whose ends can be jointed in close contact, able to be jointed without using a large-sized intervening fixing part such as a bracket and able to secure stable joint accuracy without being welded. SOLUTION: A joint is made of a pair of edges 11a, 11b in parallel each other. Male and female, a recessed portion 10d and a projecting portion 10e which are equipped at an edge 10a crossing the pair of edges 11a, 11b in parallel are engaged each other. A supporting face 15 is formed at the pipe end by being fitted to stop coming out according to deformation of the projecting portion 10e in the recessed portion 10d and the projecting portion 10e.
|
