CN216430895U

CN216430895U - Corrosion-resistant anti-peeling galvanized steel pipe

Info

Publication number: CN216430895U
Application number: CN202122587018.4U
Authority: CN
Inventors: 王东亚
Original assignee: Fujian Huiyuan Metal Product Co ltd
Current assignee: Fujian Huiyuan Metal Product Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-05-03
Anticipated expiration: 2031-10-27

Abstract

The utility model relates to the technical field of steel pipes, in particular to an anti-corrosion and anti-peeling galvanized steel pipe, which comprises a steel pipe main body, wherein the steel pipe main body comprises a main core pipe, an inner anti-corrosion layer, an inner galvanized layer, an outer galvanized layer and an outer anti-corrosion layer, the inner anti-corrosion layer is arranged by adopting a chromium-containing nickel-based self-fluxing alloy spraying layer, the steel pipe main body has good hot corrosion and gas corrosion capacities, the integral anti-corrosion effect is good, the steel pipe is effectively prevented from peeling, the service life and the use safety of the steel pipe are improved, the integral plating layer is high in connection stability by adopting hot dip coating processing and forming among the inner anti-corrosion layer, the inner galvanized layer, the outer galvanized layer and the main core pipe, the falling between the coatings is effectively avoided, the three-layer polyethylene anti-corrosion coating is adopted by the outer anti-corrosion layer, the outer anti-corrosion effect of the steel pipe main body is good, the integral structure is simple, the use effect is good, and the practicability is high.

Description

Corrosion-resistant anti-peeling galvanized steel pipe

Technical Field

The utility model relates to a steel pipe technical field specifically is an anticorrosive anticreep skin type galvanized steel pipe.

Background

Galvanized steel pipes are divided into cold galvanized pipes and hot galvanized pipes, the former galvanized steel pipes are forbidden, the latter galvanized steel pipes are advocated by the nation to be temporarily used, the surface of the galvanized steel pipes is provided with welded steel pipes with hot dip coating or galvanizing coating, the galvanizing improves the corrosion resistance of the steel pipes, the service life is prolonged, at present, the galvanized pipes are rarely used for cold water pipes of newly built communities, and the galvanized pipes are used for hot water pipes of some communities. The hot dip galvanized steel pipe is widely applied to the manufacturing industries of buildings, machinery, coal mines, chemical engineering, railway vehicles, automobile industry, roads, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, mineral exploration machinery and the like, but the surface coating can peel along with the prolonging of the service life, the peeled coating not only can influence the existing performance of the galvanized pipe, but also can pollute the content of the pipe body, and therefore, the corrosion-resistant peeling-resistant galvanized steel pipe is needed to improve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anticorrosive anticreep skin type galvanized steel pipe to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an anticorrosive anticreep skin type galvanized steel pipe, includes the steel pipe main part, the steel pipe main part includes main core pipe, interior anti-corrosion coating, interior galvanizing coat, outer galvanizing coat and outer anti-corrosion coating, the inner wall of main core pipe is provided with interior galvanizing coat, the inner wall of interior galvanizing coat is provided with interior anti-corrosion coating, the outer wall of main core pipe is provided with outer galvanizing coat, the outer wall of outer galvanizing coat is provided with outer anti-corrosion coating.

As the preferred scheme of the utility model, the inner anti-corrosion layer adopts the nickel-based self-fluxing alloy spraying layer containing chromium, and the spraying thickness is 2-3 mm.

As the preferred scheme of the utility model, the plating layer thickness on interior zinc-plated layer and outer zinc-plated layer is 2 ~ 3 mm.

As the preferred scheme of the utility model, adopt hot dipping machine-shaping between interior anti-corrosion coating, interior zinc coating, outer zinc coating and the main core pipe.

As the preferred scheme of the utility model, the outer anticorrosion layer adopts three layer construction polyethylene anticorrosion coating.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, adopt the nickel base that contains chromium from the fusibility alloy spraying coating through the interior anti-corrosion coating that sets up, have good hot corrosion, gas corrosion's ability because formed fine and close Cr₂O₃The oxide film is formed by spraying chromium-containing nickel-based self-fluxing alloy spraying layer on metal, and the formed nonporous compact welding layer has better corrosion resistance which is almost equal to the corrosion resistance of the whole same material, so that the whole corrosion resistance effect is good, the steel pipe is effectively prevented from peeling, the service life of the steel pipe is prolonged, and the use safety of the steel pipe is improved.

2. The utility model discloses in, adopt hot dipping machine-shaping between interior anti-corrosion coating, interior zinc coating, outer galvanizing coat and the main core pipe through setting up, make holistic cladding material connection stability high, effectually avoid droing between the coating, adopt three layer construction polyethylene anti-corrosion coating through the outer anti-corrosion coating that sets up, can make the outer anti-corrosion of steel pipe main part effectual, overall structure is simple, excellent in use effect has higher practicality.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is an enlarged schematic view of the part a of the present invention.

In the figure: 1. a steel pipe body; 2. a main core tube; 3. an inner anti-corrosion layer; 4. an inner zinc-plated layer; 5. an outer zinc coating; 6. an outer anti-corrosion layer.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In order to facilitate understanding of the invention, the invention will be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which can be embodied in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1-3, the present invention provides a technical solution:

the utility model provides an anticorrosive anticreep skin type galvanized steel pipe, includes steel pipe main part 1, steel pipe main part 1 includes main core pipe 2, interior anticorrosion layer 3, interior galvanizing coat 4, outer galvanizing coat 5 and outer anticorrosion layer 6, and the inner wall of main core pipe 2 is provided with interior galvanizing coat 4, and the inner wall of interior galvanizing coat 4 is provided with interior anticorrosion layer 3, and the outer wall of main core pipe 2 is provided with outer galvanizing coat 5, and the outer wall of outer galvanizing coat 5 is provided with outer anticorrosion layer 6.

Examples referring to FIGS. 1, 2 and 3, the inner anti-corrosion layer 3 is a chromium-containing nickel-based self-fluxing alloy spray coating layer, and is sprayed to a thickness of 2 to 3mm, and the inner zinc-plated layer 4 and the outer zinc-plated layer 5 are plated to a thickness of 2 to 3mm, and the inner anti-corrosion layer 3 is a chromium-containing nickel-based self-fluxing alloy spray coating layer, so that the coating has good hot corrosion,Capability of gas corrosion due to the formation of dense Cr₂O₃The oxide film is formed by spraying chromium-containing nickel-based self-fluxing alloy spraying layer on metal, and the formed nonporous compact welding layer has better corrosion resistance which is almost equal to the corrosion resistance of the whole same material, so that the whole corrosion resistance effect is good, the steel pipe is effectively prevented from peeling, the service life of the steel pipe is prolonged, and the use safety of the steel pipe is improved.

In the embodiment, referring to fig. 1, 2 and 3, the inner anti-corrosion layer 3, the inner zinc-plated layer 4, the outer zinc-plated layer 5 and the main core tube 2 are formed by hot dip coating, the outer anti-corrosion layer 6 is a polyethylene anti-corrosion coating with a three-layer structure, and the inner anti-corrosion layer 3, the inner zinc-plated layer 4, the outer zinc-plated layer 5 and the main core tube 2 are formed by hot dip coating, so that the overall coating has high connection stability, the coating is effectively prevented from falling off, and the outer anti-corrosion layer 6 is a polyethylene anti-corrosion coating with a three-layer structure, so that the outer layer of the steel tube main body 1 has good anti-corrosion effect, simple overall structure, good use effect and high practicability.

The working principle is as follows: when in use, the inner anti-corrosion layer 3 adopts a chromium-containing nickel-based self-fluxing alloy spraying layer, has good hot corrosion and fuel gas corrosion capabilities, and forms compact Cr₂O₃The corrosion resistance of the formed nonporous compact welding layer is better, and is almost equivalent to the corrosion resistance of the whole same material, so that the whole corrosion resistance effect is good, the steel pipe is effectively prevented from peeling, the service life and the use safety of the steel pipe are improved, the integral plating layer has high connection stability by adopting hot dip coating processing and forming between the inner corrosion resistance layer 3, the inner zinc plating layer 4, the outer zinc plating layer 5 and the main core pipe 2, and the falling between the coatings is effectively avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anticorrosive anticreep skin type galvanized steel pipe, includes steel pipe main part (1), its characterized in that: the steel pipe main body (1) comprises a main core pipe (2), an inner anti-corrosion layer (3), an inner galvanized layer (4), an outer galvanized layer (5) and an outer anti-corrosion layer (6), wherein the inner wall of the main core pipe (2) is provided with the inner galvanized layer (4), the inner wall of the inner galvanized layer (4) is provided with the inner anti-corrosion layer (3), the outer wall of the main core pipe (2) is provided with the outer galvanized layer (5), and the outer wall of the outer galvanized layer (5) is provided with the outer anti-corrosion layer (6).

2. The corrosion-resistant anti-peeling galvanized steel pipe as claimed in claim 1, characterized in that: the inner anti-corrosion layer (3) is a chromium-containing nickel-based self-fluxing alloy spraying layer, and the spraying thickness is 2-3 mm.

3. The corrosion-resistant anti-peeling galvanized steel pipe as claimed in claim 1, characterized in that: the plating thickness of the inner zinc plating layer (4) and the outer zinc plating layer (5) is 2-3 mm.

4. The corrosion-resistant anti-peeling galvanized steel pipe as claimed in claim 1, characterized in that: the inner anti-corrosion layer (3), the inner galvanized layer (4), the outer galvanized layer (5) and the main core pipe (2) are formed by hot dipping.

5. The corrosion-resistant anti-peeling galvanized steel pipe as claimed in claim 1, characterized in that: the outer anti-corrosion layer (6) adopts a polyethylene anti-corrosion coating with a three-layer structure.