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US 12,169,042 B2Granted
Metal pipe, in particular pipe for conveying oil and gas, comprising a metal coating in a transition region
AssigneeSMS group GmbH
InventorsJochen Vochsen, Michael Stark
Life of this patent
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Abstract
A metal pipe and a system of pipes, and a method of producing the same. The pipe is for conveying oil and gas. The pipe includes a metal coating in a transition region. The metal coating of the transition region obviates a subsequent coating of the inner surface of the transition region after connecting two pipes using a welding process in order to form a pipeline.
Claims8
A metal pipe for conveying oil and gas, the metal pipe comprising:
- a pipe body with an inner surface and an outer surface;
- and
- a pipe joint having a transition region located at an end of the pipe body, and the inner surface of the pipe body having at least a partial base coating disposed at the transition region,
- wherein the transition region is coated on the inner surface of the pipe body with a weldable metal coating of a material with anti-corrosion and/or anti-abrasion properties,
- wherein the at least partial base coating on the inner surface of the pipe body partially covers the metal coating of the transition region, and
- wherein the at least partial base coating is a sprayed-on metal base coating.
3 more elements
A system comprising:
- at least two metal pipes, each of the at least two metal pipes including:
- a pipe body with an inner surface and an outer surface, and
- a pipe joint having a transition region located at an end of the pipe body, and the inner surface of the pipe body having at least a partial base coating disposed at the transition region,
- wherein:
- the transition region is coated on the inner surface of the pipe body with a weldable metal coating of a material with anti-corrosion and/or anti-abrasion properties,
- the at least partial base coating on the inner surface of the pipe body partially covers the metal coating of the transition region,
- the at least partial base coating is a sprayed-on metal base coating;
- and
- wherein:
- the at least two metal pipes are connected to one another by a weld seam at the respective pipe joints, and
- the at least two pipes have a continuous coating of the at least partial base coating and the metal coating on the inner surface therebetween.
8 more elements
Dependencies are inferred from the claim text.