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Multi-layer composite stainless steel tube

A stainless steel pipe and multi-layer composite technology, which is applied in the field of steel pipes, can solve the problems of long service life of stainless steel, low hardness of stainless steel, and easy wear and tear, and achieve good anti-corrosion and anti-wear effects, strong sealing, and high mechanical strength. Effect

Inactive Publication Date: 2014-04-16
常州市联谊特种不锈钢管有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although stainless steel has the characteristics of corrosion resistance and high strength, general stainless steel will rust after a long time of use, especially in fluid conveying pipelines
And because the hardness of stainless steel is not high, it is easy to be worn

Method used

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  • Multi-layer composite stainless steel tube

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Experimental program
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Effect test

Embodiment Construction

[0009] See figure 1 , the present invention has an outer tube body 1 and an inner tube body 3 made of stainless steel, and an intermediate layer 2 of plastic material fixed between the outer tube body 1 and the inner tube body 3; the outer tube body 1 A zirconium nitride layer 4 is coated on the outer wall of the inner pipe body 3; an anti-rust coating 5 is attached to the inner wall of the inner tube body 3; the thickness of the zirconium nitride layer 4 is 0.3-0.5mm; the anti-rust coating Layer 5 has a thickness of 0.1-2 mm.

[0010] The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall ...

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Abstract

The invention relates to a multi-layer composite stainless steel tube. The multi-layer composite stainless steel tube comprises an outer-layer tube body, an inner-layer tube body and a middle layer, wherein the outer-layer tube body and the inner-layer tube body are made of stainless steel materials, the middle layer is fixedly arranged between the outer-layer tube body and the inner-layer tube body, and is made of plastic materials, a zirconium nitride layer is arranged on the outer wall of the outer-layer tube body in a plating mode, and a rustproof coating adheres to the inner wall of the inner-layer tube body. The multi-layer composite stainless steel tube has high mechanical strength, good in corrosion preventing effect, good in abrasion preventing effect and long in service life.

Description

technical field [0001] The invention relates to a steel pipe, in particular to a multilayer composite stainless steel pipe. Background technique [0002] Stainless steel refers to steel resistant to weak corrosive media such as air, steam, water, and chemically corrosive media such as acid, alkali, and salt. It is also called stainless acid-resistant steel. The corrosion resistance of stainless steel depends on the alloying elements contained in the steel. The basic alloying elements of stainless steel include nickel, molybdenum, titanium, niobium, copper, nitrogen, etc., to meet the requirements of various uses for the structure and performance of stainless steel. Stainless steel is easily corroded by chloride ions, because chromium, nickel, and chlorine are isotopic elements, and the isotopic elements will be exchanged and assimilated to form corrosion of stainless steel. Although stainless steel has the characteristics of corrosion resistance and high strength, general ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/147
CPCF16L9/147F16L57/06F16L58/04
Inventor 崔金根贾健周尚金
Owner 常州市联谊特种不锈钢管有限公司
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