Metal Pipe For Oil Wells

Abstract: The present invention provides a metal pipe for oil wells that has excellent seizure resistance. A metal pipe (1) for oil wells according to the present disclosure comprises a pipe body (10) that includes a first end part (10A) and a second end part (10B). The pipe body (10) includes a pin (40) which is formed at the first end part (10A) and a box (50) which is formed at the second end part (10B). The pin (40) includes a pin contact surface (400) that includes a male thread part (41). The box (50) includes a box contact surface (500) that includes a female thread part (51). The metal pipe (1) for oil wells further comprises a Zn-Ni alloy plating layer (100) that is formed on the pin contact surface (400) and/or the box contact surface (500), and a zinc phosphate chemical treatment coating film (110) that is formed on the Zn-Ni alloy plating layer (100) and that exhibits a (020) plane orientation index X020 of not less than 2.00.

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