CN210382065U

CN210382065U - Hot-dip galvanizing greenhouse steel pipe with high-corrosion-resistance durable zinc-iron alloy layer on surface

Info

Publication number: CN210382065U
Application number: CN201921259771.7U
Authority: CN
Inventors: 黄国勤
Original assignee: Danyang City Tenghuang Pipe Galvanize Co ltd
Current assignee: Danyang City Tenghuang Pipe Galvanize Co ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-04-24
Anticipated expiration: 2029-08-06

Abstract

The utility model discloses a hot-dip galvanizing greenhouse steel pipe with a high corrosion-resistant durable zinc-iron alloy layer on the surface, which comprises a steel pipe body, wherein the steel pipe body comprises a round pipe part and a straight pipe part welded on the round pipe part, and the round pipe part and the straight pipe part are both hollow; a plurality of symmetrical long slotted holes are formed in two sides of the straight pipe part; a zinc coating hot-dip coated on the surface of the steel pipe body; passivating the passivation film layer on the zinc coating; and the epoxy resin coating is sprayed on the inner wall of the steel pipe body. The utility model discloses a straight tube portion cloth rope wiring, the support is erect to pipe portion, forms the big-arch shelter, improves stably, cooperates galvanizing coat, passivation rete, epoxy coating simultaneously, avoids in the past the steel pipe to expose for a long time, receives the trouble of corruption easily.

Description

Hot-dip galvanizing greenhouse steel pipe with high-corrosion-resistance durable zinc-iron alloy layer on surface

Technical Field

The utility model belongs to the technical field of the big-arch shelter steel pipe, specifically speaking relates to a hot dip galvanizing big-arch shelter steel pipe that the surface has high corrosion resistant durable zinc-iron alloy layer.

Background

With the development of science and technology and the improvement of the living standard of people, the mode and the structure of agricultural production in China are being adjusted on a large scale. As a result, various types of greenhouses have been produced and have been actively constructed, and hot-dip galvanized steel pipes and steel members are required for almost all types of greenhouses, and hot-dip galvanized steel pipes and steel members are used as main materials for most types of greenhouses. The quality of hot dip galvanized steel pipes and steel parts therefore plays a very important role in greenhouse performance and life.

In the actual market and greenhouse production at present, in order to reduce the production cost or simplify the production process, some enterprises producing hot-dip galvanized greenhouse steel pipes and steel parts do not operate according to a scientific production process in the production process, so that the quality of the materials does not reach the standard, and the quality of the greenhouse is seriously influenced. Moreover, in the manufacture of large-scale greenhouses, the steel pipes need to be connected with lines, hemp ropes or water pipes, the operation is quite troublesome, time and labor are wasted, the stability is not enough, and the steel pipes are easy to scrape. In addition, the surface of the steel pipe is corroded due to the moisture of the air in the greenhouse, so that the phenomenon of 'white powder' or 'white mud', namely the phenomenon of mildew commonly known as mildew, once the phenomenon occurs, the corrosion and rust resistance of the steel pipe is greatly reduced, and the corrosion and rust can be removed in some years or even less than two or three years. Therefore, a novel steel pipe which can be conveniently connected with a line, a hemp rope or a water pipe, is good in stability and is corrosion-resistant is lacked.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims to solve the technical problem that a hot dip galvanizing greenhouse steel pipe that the surface has high anticorrosion durable zinc-iron alloy layer is provided, through straight tube portion wiring, round tube portion erects the support, forms the big-arch shelter, improves stably, cooperates galvanizing coat, passivation rete, epoxy coating simultaneously, avoids in the past the steel pipe to expose for a long time, receives the trouble of corruption easily.

In order to solve the technical problem, the utility model discloses a hot-dip galvanizing greenhouse steel pipe with a high corrosion-resistant durable zinc-iron alloy layer on the surface, which comprises a steel pipe body, wherein the steel pipe body comprises a round pipe part and a straight pipe part welded on the round pipe part, and the round pipe part and the straight pipe part are both hollow; a plurality of symmetrical long slotted holes are formed in two sides of the straight pipe part; a zinc coating hot-dip coated on the surface of the steel pipe body; passivating the passivation film layer on the zinc coating; and the epoxy resin coating is sprayed on the inner wall of the steel pipe body.

According to an embodiment of the present invention, the steel pipe body is selected from Q235 steel.

According to an embodiment of the present invention, the zinc-plated layer has a zinc-iron alloy layer on the surface of the steel pipe body and a pure zinc layer on the outer surface of the zinc-iron alloy layer, the iron content in the zinc-iron alloy layer is gradually reduced from the inside to the outside of the steel pipe body, and the zinc content is gradually increased from the inside to the outside of the steel pipe body.

According to the utility model discloses an embodiment, wherein above-mentioned straight tube portion width is 2cm ~3 cm.

According to the utility model discloses an embodiment, wherein above-mentioned round tube portion wall thickness is 1.5mm ~2mm, and both ends are equipped with the bolt hole.

Compared with the prior art, the utility model discloses can obtain including following technological effect:

through straight tube portion cloth rope wiring, the support is erect to the pipe portion of circle, forms the big-arch shelter, improves stably, cooperates galvanizing coat, passivation film layer, epoxy coating simultaneously, avoids the long-time exposure of steel pipe in the past, receives the trouble of corruption easily.

Of course, it is not necessary for any product to achieve all of the above-described technical effects simultaneously.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

FIG. 1 is a front view of a hot-dip galvanized steel greenhouse pipe with a highly corrosion-resistant and durable zinc-iron alloy layer on the surface according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A of FIG. 1;

fig. 3 is a schematic cross-sectional view of a steel pipe body according to an embodiment of the present invention.

Reference numerals

The steel pipe comprises a steel pipe body 10, a round pipe part 11, a straight pipe part 12, a long slotted hole 21, a bolt hole 22, a zinc coating 30, a zinc-iron alloy layer 31, a pure zinc layer 32, a passivation film layer 40 and an epoxy resin coating 50.

Detailed Description

The following detailed description will be made with reference to the accompanying drawings and examples, so that how to implement the technical means of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.

Referring to fig. 1 to 3 together, fig. 1 is a front view of a hot-dip galvanized steel greenhouse pipe with a high corrosion-resistant and durable zinc-iron alloy layer on the surface according to an embodiment of the present invention; FIG. 2 is a sectional view taken along line A of FIG. 1; fig. 3 is a schematic cross-sectional view of a steel pipe body according to an embodiment of the present invention. As shown in the figure, the hot-dip galvanizing greenhouse steel pipe with the high-corrosion-resistance durable zinc-iron alloy layer on the surface comprises a steel pipe body 10, wherein the steel pipe body 10 comprises a round pipe part 11 and a straight pipe part 12 welded on the round pipe part 11, and the round pipe part 11 and the straight pipe part 12 are both hollow; a plurality of symmetrical long slotted holes 21 are formed in two sides of the straight pipe part 12; a zinc coating layer 30 hot-dip coated on the surface of the steel pipe body 10; passivating the passivation film layer 40 on the zinc coating layer 30; and an epoxy resin coating 50 sprayed on the inner wall of the steel pipe body 10.

The utility model discloses an embodiment, the preferred straight seam electric welding steel pipe of steel pipe body 10, the material trade mark of adoption be Q235 steel, and direct tubulation shaping after the pressure is pricked, and the application is extensive, has better toughness and mechanical strength moreover, and strain capacity value is better. Wherein the wall thickness of the round pipe part 11 is 1.5mm ~2mm, and bolt holes 22 are arranged at both ends, so that the mounting hanger can be penetrated. The straight tube portion 11 width is 2cm ~3cm, accounts for about 1/5 of pipe portion 11 width, and the cavity threading rope is worn, has a plurality of slotted holes 21 of interval in both sides face moreover, is rectangular ellipse shape, can be convenient for the transit line play rope, and nimble regulation lightens weight moreover, reduces and bears the weight of.

The steel pipe body 10 is formed into a zinc coating 30 by hot dip coating, wherein the zinc coating 30 is divided into an inner zinc-iron alloy layer 31 and an outer pure zinc layer 32, molten zinc is added in a hot dip reaction, so that iron atoms of the steel pipe body 10 and surrounding zinc atoms are diffused and permeated with each other, and finally the zinc-iron alloy layer 31 is formed, meanwhile, the iron content in the zinc layer is gradually reduced from the inside to the outside of the steel pipe body 10, the zinc content is gradually increased from the inside to the outside of the steel pipe body 10, and the dense pure zinc layer 32 is formed on the outermost surface, the zinc content is the highest, and the iron element content is very small and can be ignored. The finally formed zinc coating 30 has stable chemical properties and stronger corrosion resistance due to the zinc and iron components, and can prevent the steel pipe body 10 from mildewing and corroding, thereby achieving higher durability.

In addition, the passivation film layer 40 is formed by passivation treatment on the outermost layer, and the passivation film layer 40 is preferably an inorganic and organic composite film having a thickness of at most 2.5 μm, which is negligible with respect to the thickness of the entire zinc plating layer 30, and can further improve the anti-corrosion performance of the zinc plating layer 30. The innermost layer is also sprayed with the epoxy resin coating 50, and the passivation film layer 40 is difficult to avoid being scratched when wiring ropes are frequently arranged, so that the wear-resistant epoxy resin coating 50 is sprayed on the inner surface, the temperature resistance and the corrosion resistance are improved, and the protection effect is enhanced.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A hot-dip galvanizing greenhouse steel pipe with a high-corrosion-resistance durable zinc-iron alloy layer on the surface is characterized by comprising: the steel pipe comprises a steel pipe body, a steel pipe body and a steel pipe body, wherein the steel pipe body comprises a round pipe part and a straight pipe part welded on the round pipe part, and the round pipe part and the straight pipe part are both hollow; a plurality of symmetrical long slotted holes are formed in two sides of the straight pipe part; a zinc coating hot-dip coated on the surface of the steel pipe body; passivating the passivation film layer on the zinc coating; and the epoxy resin coating is sprayed on the inner wall of the steel pipe body.

2. The hot-dip galvanized greenhouse steel pipe with a highly corrosion-resistant and durable zinc-iron alloy layer on the surface as claimed in claim 1, wherein the steel pipe body is selected from Q235 steel.

3. The hot-dip galvanized steel greenhouse pipe with a highly corrosion-resistant and durable zinc-iron alloy layer on the surface as claimed in claim 2, wherein the zinc coating layer comprises a zinc-iron alloy layer on the surface of the steel pipe body and a pure zinc layer on the outer surface of the zinc-iron alloy layer, the iron content in the zinc-iron alloy layer decreases from the inside to the outside of the steel pipe body, and the zinc content increases from the inside to the outside of the steel pipe body.

4. The hot-dip galvanized greenhouse steel pipe with the high corrosion-resistant and durable zinc-iron alloy layer on the surface as claimed in claim 1, wherein the width of the straight pipe part is 2 cm-3 cm.

5. The hot-dip galvanized greenhouse steel pipe with the high corrosion-resistant and durable zinc-iron alloy layer on the surface as claimed in claim 1, wherein the wall thickness of the round pipe part is 1.5 mm-2 mm, and bolt holes are formed at two ends of the round pipe part.