PURPOSE: To uniformly machine a bore whole surface without any directionality so as to eliminate the generation of a turned groove by crushing generated roughness by means of a method depending on no machine work such as lathe turning and grinding.

CONSTITUTION: A roller burnishing tool 1 is inserted into a metallic pipe 2 in the arrow direction while rotated. In the metallic pipe 2, which is used for a stainless steel sanitary pipe and is precisely machined by drawing, solution treatment and pickling are carried out On the surface of the metallic pipe 2, desirably, a passive state film with thickness of approximately 50 is generated simultaneously/separately with/from the pickling. The oxide film or the passive state film on the metallic pipe surface is rolled and compacted so as to be integrally bound on the surface of the metallic pipe 2, so that corrosion resistance on the surface of the metallic pipe 2 is not deteriorated at all even though work hardening of austenite itself and transformation to martensite are generated.