Metal Pipe For Oil Wells

Abstract: The present invention provides a metal pipe for oil wells, the metal pipe being able to be fastened with high torque. A metal pipe (1) for oil wells according to the present disclosure is provided with a resin film (100) on or above at least one of a pin contact surface (400) and a box contact surface (500). The resin film (100) contains, in mass%, 40.0% to 97.0% of an epoxy resin, 3.0% to 50.0% of a hydrated magnesium silicate powder, 0% to 10.0% of TiO2, 0% to 10.0% of a wax, 0% to 20.0% of a fluorine-based additive and 0% to 10.0% of graphite, while satisfying formula (1). (1): (CW + CF + CG)/(CMg + CTiO2 + CSi) = 0.28 In formula (1), the content of the wax expressed in mass% is assigned to CW; the content of the fluorine-based additive expressed in mass% is assigned to CF; the content of the graphite expressed in mass% is assigned to CG; the content of the hydrated magnesium silicate powder expressed in mass% is assigned to CMg; the content of TiO2 expressed in mass% is assigned to CTiO2; and the content of a silane coupling agent expressed in mass% is assigned to CSi.

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