Connecting pipe

A connecting pipe comprising a connecting pipe portion having, at opposite ends thereof, connection opening end portions to be connected by being fitted to two pipe end portions located at mutually spaced positions and having respective pipe openings, the connecting pipe comprising:

• a bendable portion provided between the opposite ends of the connecting pipe portion to allow the connecting pipe portion to be bent relative to a longitudinal axis of the connecting pipe portion;
• and
• rigid portions extending from the bendable portion to the connection opening end portions, respectively, the rigid portions having a higher rigidity than the bendable portion;
• wherein bending the connecting pipe portion at the bendable portion allows the connection opening end portions at the opposite ends to be fitted to the pipe end portions respectively associated therewith, the bendable portion having an elastic restoring force to maintain a state where the connection opening end portions are fitted to the pipe end portions associated therewith after the state has been established.