Method of manufacturing exhaust pipe

A method of manufacturing an exhaust pipe that forms a flow path of exhaust gas of a vehicle, comprising:

• inserting a cover member into an approximately circular opening provided at a first end of a first exhaust pipe,
• the cover member comprising:
• an inner circumferential portion that is a ring-shaped portion having a central axis, an outer circumferential surface of the inner circumferential portion facing an inner circumferential surface of the first exhaust pipe when the cover member is inserted into the opening;
• and
• a held portion that extends outward from an end of the inner circumferential portion, the held portion being held between the first end and a second end of a second exhaust pipe connected to the first end,
• a direction along a plane orthogonal to the central axis being a width direction,
• a maximum width along the width direction from the central axis of the inner circumferential portion to the outer circumferential surface being equal to, or greater than, a radius of a circumference of the opening,
• a minimum width along the width direction from the central axis of the inner circumferential portion to the outer circumferential surface being smaller than the radius,
• a circumferential length of the outer circumferential surface being shorter than a length of the circumference of the opening.