| 摘要 |
A joint structure for directly joining a plurality of pipes is provided. A first pipe (10) has a joined end face (11) obtained by laser machining at a predetermined angle to an axis and a tenon (12) formed on a joined end face. A second pipe (20) has a joined end face (21) obtained by laser machining at a predetermined angle to an axis and a mortice (22). By fitting the tenon (12) of the first pipe (10) to the mortice (22) of the second pipe (20), a joint structure of the two pipes (10,20) is formed. The joined end face (11) of the first pipe (10) and the joined end face (21) of the second pipe (20) are in surface contact over the entire thickness of the pipe. |
