Metal Pipe For Oil Well

Abstract: Provided is a metal pipe for an oil well, the metal pipe comprising a Zn-Ni alloy plated layer having high adhesiveness. A metal pipe for an oil well according to the present disclosure comprises: a pipe body which includes a pin formed on a first end part and including a pin contact surface having a male screw part, and a box formed on a second end part and including a box contact surface having a female screw part; and a Zn-Ni alloy plated layer formed on at least one among the pin contact surface and the box contact surface. The X-ray diffraction intensity of the Zn-Ni alloy plated layer satisfies expression (1). I18/(I18+I36+I54)=0.60 (1) Here, the X-ray diffraction intensity of 411 and 330, the X-ray diffraction intensity of 442 and 600, and the X-ray diffraction intensity of 552 are substituted, in a unit of cps, for I18, I36, and I54 in expression (1), respectively.

Patent Information

Applicants

Inventors

Specification

Documents

Application Documents