To disclose a technology for simplifying welding of a pipe body and a fuel injection valve mounting part.

A delivery pipe includes: a pipe body having a fuel supply passage which is long and penetrates in the longitudinal direction, a first plane part arranged in at least a part of an outer wall, and a branch hole connecting the fuel supply passage with the first plane part; and a connecting member having a second plane part, an introducing hole having one end arranged in the second plane part, and a communicating hole communicating with the introducing hole. The method of manufacturing the delivery pipe includes: an abutting process of positioning the branch hole and the introducing hole so that they communicate with each other to bring the second plane part into contact with the first plane part; and a welding process of irradiating an outer surface of the connecting member with laser over the whole periphery of the introducing hole to the abutting part between the first plane part and the second plane part, to weld the second plane part to the first plane part.