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Composite metal tube

A composite metal pipe and metal pipe technology are applied to the composite metal pipe. It can solve the problems of corrosion resistance reliability, economic indicators are difficult to balance, and it is difficult to meet the needs of oil and gas field development, and achieve excellent mechanical properties, good corrosion resistance, and the effect of reducing dosage.

Pending Publication Date: 2017-12-22
江苏天时新材料科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] For the exploitation of oil and gas fields with strong corrosive media, traditional single anti-corrosion technologies and materials such as adding corrosion inhibitors, plastic inner coatings, and corrosion-resistant alloys are used. development needs

Method used

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  • Composite metal tube

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Embodiment

[0017] Such as figure 1 As shown, the present invention provides a composite metal pipe. The metal pipe is composed of a carbon steel pipe body, a corrosion-resistant alloy layer and an anti-corrosion coating from the inside of the pipe body axis to the outside. The carbon steel pipe body and the corrosion-resistant alloy layer are form a closed space.

[0018] As a preference, the anti-corrosion coating is a graphene water-based coating layer.

[0019] Further, the carbon steel pipe body and the corrosion-resistant alloy layer are combined through a hot rolling process.

[0020] The metal plate used in this embodiment is a steel pipe, and the two pipes are coaxially superimposed. The inner pipe and the outer pipe are expanded at the same time through the hydraulic expansion method or the explosion method, so that the inner pipe undergoes a large plastic deformation and the outer pipe undergoes a smaller deformation. Elastic deformation, after the pressure is released, the e...

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Abstract

The invention provides a composite metal tube. The metal tube sequentially comprises a carbon steel tube body, a corrosion-resisting alloy layer and an anti-corrosion coating from the interior of the axis of a tube body to the outside. Closed space is formed between the carbon steel tube body and the corrosion-resisting alloy layer. The metal tube is suitable for oil-gas tube laying and has good corrosion-resisting performance and excellent mechanical performance, and the preparation process is simple.

Description

technical field [0001] The invention relates to the technical field of oil and gas pipeline building materials, in particular to a composite metal pipe. Background technique [0002] With the acceleration of the global industrialization era, the demand for energy is increasing day by day, and the energy issue has become a key issue in the economic development of various countries. Due to the slow progress in the research and development of alternative energy sources, the exploitation of oil and gas fields with strong corrosive media has become a reality. [0003] For the exploitation of oil and gas fields with strong corrosive media, traditional single anti-corrosion technologies and materials such as adding corrosion inhibitors, plastic inner coatings, and corrosion-resistant alloys are used. development needs. In order to reduce mining costs and prolong the service life of pipelines, the use of corrosion-resistant alloy composite pipes is one of the relatively safe and e...

Claims

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Application Information

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IPC IPC(8): F16L9/14F16L57/02F16L58/08F16L58/04
CPCF16L9/14F16L57/02F16L58/04F16L58/08
Inventor 时伯建
Owner 江苏天时新材料科技有限公司
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