Fuel tank and method for manufacturing fuel tank

A fuel tank comprising:

• an upper component including an upper panel forming a tank upper shell and an inlet plate formed separately from the upper panel;
• a lower component including a lower panel forming a tank lower shell and a lower connection plate formed separately from the lower panel;
• and
• a pipe passing through inside of the upper panel and the lower panel and connecting the inlet plate and the lower connection plate, wherein
• the upper component includes an upper pipe connector extending from the inlet plate into the fuel tank and the lower component includes a lower pipe connector penetrating the lower connection plate;
• the upper panel and the inlet plate are made of titanium or titanium alloy;
• the upper pipe connector is joined to the inlet plate by brazing;
• an opening is formed at the upper panel;
• an outer peripheral edge of the inlet plate is joined to an opening edge of the upper panel by welding;
• the lower panel and the lower connection plate are made of titanium or titanium alloy;
• the lower pipe connector is joined to the lower connection plate by brazing;
• an opening is formed at the lower panel and along an outer peripheral edge of the lower connection plate;
• an outer peripheral edge of the lower connection plate is joined to an opening edge of the lower panel by welding;
• the pipe is located inside the fuel tank, and is configured to connect the upper pipe connector and the lower pipe connector by connecting a downstream end of the upper pipe connector and an upstream end of the lower pipe connector;
• and
• the lower panel is joined to the upper panel by welding.