| 摘要 |
PROBLEM TO BE SOLVED: To prevent decrease in the efficiency of work to penetrate a connection member into a wall part of a fuel tank body.SOLUTION: A connection member 20 penetrated into a wall part of a fuel tank body 14 has an outside connection part 38 that connects a piping to the outside of the fuel tank body 14, an inside connection part 34 that connects a piping to the inside of the fuel tank body 14, and a boring part 40 provided at the tip side of the outside connection part 38 for boring the wall part. |
