A fluid supply pipe according to an embodiment of the invention includes a first internal structure, a second internal structure, and a pipe body configured to house the first internal structure and the second internal structure, and the pipe body has an inlet and an outlet. The first internal structure includes a head portion comprising a plurality of spiral vanes, and a body portion positioned downstream from the head portion and comprising a plurality of protrusions on its outer circumferential surface. The second internal structure formed in a hollow shaft shape includes a head portion comprising a plurality of spiral vanes, and a body portion positioned downstream from the head portion and comprising a plurality of protrusions on its outer circumferential surface. At least a part of the first internal structure is housed in the hollow of the second internal structure.