An object of the present invention is to provide a fluid supply pipe capable of giving a fluid a predetermined flow characteristic and improving the lubricity, permeability and cooling effect of the fluid. A fluid supply pipe includes an internal structure and a pipe body for housing the internal structure, and the pipe body includes an inlet and an outlet. The internal structure includes a first portion, a second portion, a third portion, and a fourth portion that are integrally formed on a common shaft member having a circular cross section. The first portion of the internal structure is located on the upstream side of the pipe body when the internal structure is housed in the pipe body, and is formed in a spiral shape so as to generate a spiral portion in the shaft and fluid. A plurality of blades, and the second portion is located downstream from the first portion, includes a shaft portion, and a plurality of protrusion portions protruding from the outer peripheral surface of the shaft portion, and a third portion The portion is located downstream of the second portion and includes a shaft portion and a plurality of wings formed in a spiral shape so as to generate a spiral flow in the fluid. 3 includes a shaft portion and a plurality of protrusions protruding from the outer peripheral surface of the shaft portion. [Selection] Figure 2【課題】流体に所定の流動特性を与えて、流体の潤滑性、浸透性、及び冷却効果を向上させることができる流体供給管を提供することにある。【解決手段】流体供給管は、内部構造体と、内部構造体を収納するための管本体と、を含み、管本体は、流入口と流出口とを含む。内部構造体は、断面が円形の共通の軸部材上に一体化して形成されている第１の部分と、第２の部分と、第３の部分と、第４の部分とを含む。内部構造体の第１の部分は、管本体に内部構造体が収納された際、管本体の上流側に位置し、軸部と、流体に渦巻流を発生させるように螺旋状に形成された複数の翼とを含んでおり、第２の部分は、第１の部分より下流側に位置し、軸部と、軸部の外周面から突出した複数の突起部とを含んでおり、第３の部分は、第２の部分より下流側に位置し、軸部と、流体に渦巻流を発生させるように螺旋状に形成された複数の翼とを含んでおり、第４の部分は、第３の部分より下流側に位置し、軸部と、軸部の外周面から突出した複数の突起部とを含む。【選択図】図２
