| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a branch joint structure having improved reliability against leakage from a joint portion due to stress on the joint portion with the vibration or bending of a piping system over a long period of time, and to provide its assembling method. <P>SOLUTION: In the branch joint structure, a first branch pipe 3 is welded and joined to an opening portion 2 of a main pipe 1, the first branch pipe 3 is inserted into a through-hole 6 of a joint member 5 to adhere and join the outer peripheral face of the first branch pipe 3 to the inner face of the through-hole 6 of the joint member 5, the main pipe 1 is welded and jointed to the joint member 5, a second branch pipe 9 is inserted into the through-hole 6 of the joint member 5 to adhere and join the outer peripheral face of the second branch pipe 9 to the inner face of the through-hole 6 of the joint member 5, and the joint member 5 is welded and joined to the second branch pipe 9. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
