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Internal hexagonal cold-drawn steel pipe

A cold-drawn steel pipe and hexagonal technology is applied in the field of steel pipes, which can solve the problems of steel pipe failure and shorten the service life of steel pipes, and achieve the effects of improving service life, improving work efficiency and simple structure.

Inactive Publication Date: 2017-11-17
朱江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual field of liquid transportation, steel pipes are generally buried underground or in an environment with high water vapor content for a long time, so they are prone to corrosion and lead to failure of the steel pipe, reducing the service life of the steel pipe

Method used

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  • Internal hexagonal cold-drawn steel pipe

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Effect test

Embodiment Construction

[0009] The present invention will be further described below in conjunction with accompanying drawing.

[0010] see figure 1 , the inner hexagonal cold-drawn steel pipe of the present invention comprises a steel pipe body 1 that has been seamlessly cold-drawn, the outer wall section of the steel pipe body 1 is circular, the inner wall section of the steel pipe body 1 is hexagonal, and the hexagonal Each corner is provided with a rounded corner 2, the inner wall of the steel pipe body 1 is provided with a polished layer 3, the outer wall of the steel pipe body 1 is provided with a carburized layer 4, the surface of the carburized layer 4 is provided with a galvanized layer 5, and the galvanized layer 5 The surface of the steel pipe is provided with an anti-corrosion layer 6, the thickness of the steel pipe body 1 is 6-12 mm, and the anti-corrosion layer 6 is an epoxy resin coating layer.

[0011] The inner wall of the steel pipe body 1 is hexagonal, which can be used in a hone...

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Abstract

The invention discloses an internal hexagonal cold-drawn steel pipe. The internal hexagonal cold-drawn steel pipe includes a steel pipe body on which cold-drawing seamless processing is performed; a cross section of an outer wall of the steel pipe body is round; a cross section of an inner wall of the steel pipe body is hexagonal; fillets are arranged on corners of the hexagonal structure; a polishing layer is arranged on the inner wall of the steel pipe body; a carburized layer is arranged on the outer wall of the steel pipe body; a zinc coating is arranged on a surface of the carburized layer; and an anticorrosive coating is arranged on a surface of the zinc coating. The internal hexagonal cold-drawn steel pipe is simple in structure, can meet the diversified market demands; the surface of the zinc coating is coated with an epoxy resin anticorrosive coating, the corrosion resistant characteristic of the epoxy resin coating is fully utilized, the zinc coating will not be released, a better anticorrosive effect is achieved, and the use life of the cold-drawn steel pipe is prolonged.

Description

technical field [0001] The invention relates to a steel pipe, in particular to an inner hexagonal cold-drawn steel pipe. Background technique [0002] In the known technical field, cold-drawn steel pipe is a precision cold-drawn seamless pipe widely used in large-scale liquid transportation, mechanical structure, hydraulic equipment and other fields. Cold-drawn steel pipe can greatly save the working hours of machining and improve the utilization of materials. efficiency, while helping to improve product quality and precision. In the actual field of liquid transportation, steel pipes are generally buried underground or in an environment with high water vapor content for a long time, so corrosion is prone to occur, resulting in failure of the steel pipe and reducing the service life of the steel pipe. Contents of the invention [0003] The purpose of the present invention is to provide a hexagonal cold-drawn steel pipe with simple structure, corrosion resistance, good stab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/14F16L57/00F16L58/10
CPCF16L9/14F16L57/00F16L58/1054
Inventor 朱江
Owner 朱江
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