Hot-dip galvanized steel pipe with good corrosion-resistant effect

Abstract

The utility model discloses a hot-dip galvanized steel pipe with good corrosion resistance effect, which relates to the technical field of steel pipe galvanization, and comprises a main body pipe, the surface of the main body pipe is provided with a fixing groove, the surface of the main body pipe is provided with a grabbing and attaching assembly, the grabbing and attaching assembly comprises two fixing rings, the two fixing rings are fixedly connected to the inner wall of the fixing groove, and the two fixing rings are fixedly connected to the inner wall of the fixing groove. The multiple transverse ribs are arranged on the surface of the main body pipe, the multiple transverse ribs and the annular ribs are arranged in a staggered mode through the arranged grabbing and attaching assemblies, and therefore the zinc coating can form a complex mechanical meshing structure with the transverse ribs and the annular ribs in the solidification process; meanwhile, due to the existence of the transverse ribs and the annular ribs, the contact area and contact points of the galvanized layer and the surface of the main body pipe are increased, so that the galvanized layer can be better attached to the surface of the main body pipe, the adhesive force between the galvanized layer and the main body pipe is enhanced, and a better corrosion-resistant effect is achieved when the galvanized pipe is used after galvanization is completed.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe galvanizing technology, specifically to a hot-dip galvanized steel pipe with good corrosion resistance. Background Technology

[0002] Hot-dip galvanized steel pipes are commonly used in construction, municipal engineering, and industrial fields. Their performance directly affects the stable operation and service life of the system. In these applications, the galvanized layer is the key line of defense against external corrosion. A strong galvanized layer can effectively isolate oxygen, moisture, and various corrosive media, significantly extending the service life of the steel pipe.

[0003] However, the naturally smooth surface of traditional steel pipes makes it difficult for the galvanized layer to adhere tightly to the steel pipe surface during the hot-dip galvanizing process. When the galvanized layer is not firmly bonded to the steel pipe, it is prone to peeling and flaking under the influence of temperature changes, mechanical vibration, and external impacts during subsequent use. Once the galvanized layer is damaged, the steel pipe substrate is directly exposed to the corrosive environment, accelerating rust and corrosion, leading to problems such as pipe leaks and reduced structural strength. This not only increases maintenance costs but may also cause safety hazards, seriously affecting project quality and safety. Therefore, there is an urgent need for a hot-dip galvanized steel pipe with good corrosion resistance to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a hot-dip galvanized steel pipe with good corrosion resistance, so as to solve the problem mentioned in the background art that the surface of traditional steel pipes is relatively smooth, resulting in poor adhesion between the galvanized layer and the steel pipe surface after galvanizing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hot-dip galvanized steel pipe with good corrosion resistance, comprising a main pipe, wherein a fixing groove is formed on the surface of the main pipe, and a gripping component is provided on the surface of the main pipe;

[0006] The gripping assembly includes two fixing rings, both of which are fixedly connected to the inner wall of the fixing groove. The surface of the main tube is provided with multiple transverse ribs, both ends of which are fixedly connected to the two fixing rings. The surface of the main tube is also provided with multiple annular ribs.

[0007] Preferably, the plurality of annular ribs are fixedly connected to the surfaces of the plurality of transverse ribs, and the plurality of annular ribs and the plurality of transverse ribs are arranged in an alternating manner.

[0008] Preferably, the diameters of the transverse ribs and the annular ribs are matched, and both the fixing ring and the transverse ribs are made of aluminum alloy.

[0009] Preferably, both ends of the main tube are provided with gripping grooves, and the two gripping grooves are matched in size.

[0010] Preferably, the surface of the main tube has two outer arc edges, and the inner wall of the main tube has an inner arc edge.

[0011] Preferably, the inner wall of the gripping groove has two chamfered arcs, and the two chamfered arcs are matched in size.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The gripping components are designed to create a staggered arrangement of multiple transverse and annular ribs, which allows the galvanized layer to form a complex mechanical interlocking structure with the transverse and annular ribs during solidification. At the same time, the presence of the transverse and annular ribs increases the contact area and contact points between the galvanized layer and the surface of the main tube, enabling the galvanized layer to better adhere to the surface of the main tube. This enhances the adhesion between the galvanized layer and the main tube, resulting in better corrosion resistance after galvanizing. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the fixing groove structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the gripping component structure of this utility model;

[0017] Figure 4 This is a cross-sectional view of the gripping component of this utility model;

[0018] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Main tube; 2. Fixing groove; 3. Grip assembly; 301. Fixing ring; 302. Horizontal rib; 303. Circular rib; 304. Grip groove; 305. Outer arc edge; 306. Inner arc edge; 307. Chamfered arc. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5This utility model provides a hot-dip galvanized steel pipe with good corrosion resistance, including a main pipe 1. A fixing groove 2 is formed on the surface of the main pipe 1. An adhesion component 3 is provided on the surface of the main pipe 1. The adhesion component 3 includes two fixing rings 301, which are fixedly connected to the inner wall of the fixing groove 2. Multiple transverse ribs 302 are provided on the surface of the main pipe 1, and both ends of the multiple transverse ribs 302 are fixedly connected to the two fixing rings 301. Multiple annular ribs 303 are provided on the surface of the main pipe 1. Through the attachment component 3, when the main pipe 1 is hot-dip galvanized, after the main pipe 1 is immersed in the zinc liquid in the galvanizing bath, the zinc liquid comes into full contact with the inner wall of the fixing groove 2, the transverse ribs 302 and the annular ribs 303. At the same time, the presence of the transverse ribs 302 and the annular ribs 303 increases the contact area and contact points between the galvanized layer and the surface of the main pipe 1, so that the galvanized layer can better adhere to the surface of the main pipe 1, thereby enhancing the adhesion between the galvanized layer and the main pipe 1.

[0022] Furthermore, multiple annular ribs 303 are fixedly connected to the surfaces of multiple transverse ribs 302. The multiple annular ribs 303 and multiple transverse ribs 302 are arranged in an alternating manner. Through the alternating arrangement of annular ribs 303 and transverse ribs 302, the galvanized layer will form a complex mechanical interlocking structure with the transverse ribs 302 and annular ribs 303 during the solidification process, thereby improving the adhesion effect of the galvanized layer to the galvanized main tube 1.

[0023] Furthermore, the diameters of the transverse rib 302 and the annular rib 303 are matched, and both the fixing ring 301 and the transverse rib 302 are made of aluminum alloy. Through the transverse rib 302 and the annular rib 303 made of aluminum alloy, the oxide film naturally formed on the surface of the aluminum alloy can react chemically with zinc to a certain extent to form a transition layer, which helps to improve the adhesion between zinc and aluminum alloy. Secondly, when the main tube 1 is hot-dip galvanized, a suitable pretreatment process can make the oxide film on the surface of the aluminum alloy more uniform and dense, further enhancing the bonding force.

[0024] Furthermore, both ends of the main tube 1 are provided with gripping grooves 304. The two gripping grooves 304 are matched in size. Through the gripping grooves 304, the zinc plating solution enters the gripping grooves 304 when the main tube 1 is galvanized, thereby improving the gripping force of the end face of the main tube 1.

[0025] Furthermore, two outer arc edges 305 are formed on the surface of the main tube 1, and an inner arc edge 306 is formed on the inner wall of the main tube 1. The outer arc edges 305 and the inner arc edges 306 facilitate the smooth discharge of molten zinc from both ends of the main tube 1. If the outer arc edges 305 and the inner arc edges 306 are not formed, they will be right angles or sharp edges, which may hinder the flow of molten zinc, causing molten zinc to accumulate at the end of the main tube 1 and form defects such as zinc nodules.

[0026] Furthermore, the inner wall of the gripping tank 304 has two chamfered arcs 307, the two chamfered arcs 307 are matched in size, and the chamfered arcs 307 facilitate the smooth flow of zinc liquid on the inner wall of the gripping tank 304.

[0027] Working principle: Through the set gripping component 3, when the main tube 1 is hot-dip galvanized, after the main tube 1 is immersed in the zinc liquid in the galvanizing bath, the zinc liquid comes into full contact with the inner wall of the fixing tank 2, the transverse ribs 302 and the annular ribs 303. The multiple transverse ribs 302 and annular ribs 303 are arranged in an alternating manner, so that the galvanized layer will form a complex mechanical interlocking structure with the transverse ribs 302 and annular ribs 303 during the solidification process. At the same time, the presence of transverse ribs 302 and annular ribs 303 increases the contact area and contact points between the galvanized layer and the surface of the main tube 1, so that the galvanized layer can better adhere to the surface of the main tube 1, thereby enhancing the adhesion between the galvanized layer and the main tube 1, and having a better corrosion resistance effect when used after galvanizing.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A hot-dip galvanized steel pipe having a good corrosion resistance, comprising a main pipe (1), characterized in that: The surface of the main pipe (1) is provided with a fixing groove (2), and the surface of the main pipe (1) is provided with a grabbing assembly (3); The grabbing assembly (3) comprises two fixing rings (301), both of which are fixedly connected to the inner wall of the fixing groove (2), the surface of the main pipe (1) is provided with a plurality of transverse ribs (302), both ends of the plurality of transverse ribs (302) are fixedly connected with the two fixing rings (301), and the surface of the main pipe (1) is provided with a plurality of annular ribs (303).

2. The hot-dip galvanized steel pipe with good corrosion resistance effect according to claim 1, characterized in that: The plurality of annular ribs (303) are fixedly connected with the surfaces of the plurality of transverse ribs (302), and the plurality of annular ribs (303) and the plurality of transverse ribs (302) are arranged in a staggered manner.

3. The hot-dip galvanized steel pipe with good corrosion resistance effect according to claim 1, characterized in that: The diameter of the transverse rib (302) matches that of the annular rib (303), and the fixing ring (301) and the transverse rib (302) are both made of aluminum alloy.

4. The hot-dip galvanized steel pipe with good corrosion resistance effect according to claim 1, characterized in that: Both ends of the main pipe (1) are provided with grabbing grooves (304), and the two grabbing grooves (304) are matched in size.

5. The hot-dip galvanized steel pipe with good corrosion resistance effect according to claim 1, characterized in that: The surface of the main pipe (1) is provided with two outer arc edges (305), and the inner wall of the main pipe (1) is provided with an inner arc edge (306).

6. The hot-dip galvanized steel pipe with good corrosion resistance effect according to claim 4, characterized in that: The inner wall of the grabbing groove (304) is provided with two chamfer arcs (307), and the two chamfer arcs (307) are matched in size.

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