Corrosion-resistant and bending-resistant stainless steel pipe

Abstract

The utility model discloses a corrosion-resistant and bending-resistant stainless steel tube. According to the technical scheme, the steel pipe comprises a steel pipe body, reinforcing ribs extending in the axial direction are arranged on the outer side of the steel pipe body, an inner fluorine lining layer is arranged on the inner side of the steel pipe body, an outer fluorine lining layer is arranged on the outer side of the steel pipe body, outer positioning grooves are formed in the outer fluorine lining layer, and the reinforcing ribs are embedded into the outer positioning grooves. The steel pipe is good in bending resistance and corrosion resistance.

Description

Technical Field

[0001] The utility model relates to the field of stainless steel pipes, and more specifically to a corrosion-resistant and bend-resistant stainless steel pipe. Background Art

[0002] Seamless steel pipes are widely used in various fields. The low corrosion resistance and bend resistance of steel pipes will shorten the service life of steel pipes and reduce the transmission efficiency. Summary of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a corrosion-resistant and bend-resistant stainless steel pipe to solve the above technical problems.

[0004] To achieve the above purpose, the present utility model provides the following technical solution: a corrosion-resistant and bend-resistant stainless steel pipe, including a steel pipe body, an axially extending reinforcing rib is provided on the outer side of the steel pipe body, a lining fluorine layer is provided on the inner side of the steel pipe body, an outer lining fluorine layer is provided on the outer side of the steel pipe body, an outer positioning groove is provided on the outer lining fluorine layer, and the reinforcing rib is embedded in the outer positioning groove.

[0005] As a further improvement of the present utility model, axially extending reinforcing protrusions are provided on the inner side of the steel pipe body, axially extending inner positioning grooves are provided on the lining fluorine layer, and the reinforcing protrusions are embedded in the inner positioning grooves.

[0006] As a further improvement of the present utility model, the reinforcing protrusions are offset from the reinforcing ribs.

[0007] As a further improvement of the present utility model, an outer connection notch is provided on the reinforcing rib, an outer positioning block is provided in the outer positioning groove, the outer positioning block is embedded in the outer connection notch, and the outer positioning block fits with the outer connection notch.

[0008] As a further improvement of the present utility model, the outer connection notch is wide on the side close to the steel pipe and narrow on the side far from the steel pipe.

[0009] As a further improvement of the present utility model, an inner connection notch is provided on the reinforcing protrusion, an inner positioning block is provided in the inner positioning groove, the inner positioning block is embedded in the inner connection notch, and the inner positioning block fits with the inner connection notch.

[0010] As a further improvement of the present utility model, the inner connection notch is wide on the side close to the steel pipe and narrow on the side far from the steel pipe.

[0011] The beneficial effects of the present utility model are good bend resistance and good corrosion resistance. Brief Description of the Drawings

[0012] Figure 1 It is a schematic cross-sectional structure diagram of the present utility model;

[0013] Figure 2 It is a schematic cross-sectional structure diagram of an outer fluorine lining, a steel pipe, and a reinforcing rib;

[0014] Figure 3 It is a schematic cross-sectional structure diagram of an inner fluorine lining, a steel pipe, and a reinforcing protrusion.

[0015] Marking description: 1. Steel pipe; 2. Reinforcing rib; 21. Outer connection notch; 3. Reinforcing protrusion; 31. Inner connection notch; 4. Inner fluorine lining; 41. Inner positioning groove; 42. Inner positioning block; 5. Outer fluorine lining; 51. Outer positioning groove; 52. Outer positioning block. Specific implementation mode

[0016] The following will further elaborate on the present utility model in combination with the embodiments given in the accompanying drawings.

[0017] Refer to Figure 1 — Figure 3 As shown, the corrosion-resistant and bend-resistant stainless steel pipe of this embodiment includes a steel pipe 1 body. An axially extending reinforcing rib 2 is provided on the outer side of the steel pipe 1 body. An inner fluorine lining 4 is provided on the inner side of the steel pipe 1 body. An outer fluorine lining 5 is provided on the outer side of the steel pipe 1 body. An outer positioning groove 51 is provided on the outer fluorine lining 5, and the reinforcing rib 2 is embedded in the outer positioning groove 51.

[0018] Through the above technical solution, the reinforcing rib 2 improves the bend resistance of the steel pipe 1, and corrosion-resistant inner fluorine lining 4 and outer fluorine lining 5 are provided on both the inner and outer sides of the steel pipe 1, so that both the inner and outer sides of the steel pipe 1 have extremely high corrosion resistance. The outer fluorine lining 5 and the inner fluorine lining 4 are connected to the steel pipe 1 by injection molding, with a tight connection, high structural strength, and a high degree of coincidence between the outer positioning groove 51 and the reinforcing rib 2, resulting in high structural strength and stable position after connection.

[0019] As a specific improvement of the implementation mode, an axially extending reinforcing protrusion 3 is provided on the inner side of the steel pipe 1 body. An axially extending inner positioning groove 41 is provided on the inner fluorine lining 4, and the reinforcing protrusion 3 is embedded in the inner positioning groove 41.

[0020] Through the above technical solution, the reinforcing protrusion 3 cooperates with the reinforcing rib 2 to further improve the bend resistance of the steel pipe 1. The inner positioning groove 41 is formed during the injection molding of the inner fluorine lining 4, coincides with the reinforcing protrusion 3, and has high structural strength and stable position after connection.

[0021] As a specific improvement of the implementation mode, the reinforcing protrusion 3 and the reinforcing rib 2 are misaligned.

[0022] Through the above technical solution, the reinforcing protrusion 3 and the reinforcing rib 2 are misaligned, further improving the bend resistance of the steel pipe 1 and facilitating production and processing.

[0023] As a specific embodiment of the improvement, an external connection notch 21 is provided on the reinforcing rib 2, an external positioning block 52 is provided in the external positioning groove 51, the external positioning block 52 is embedded in the external connection notch 21, and the external positioning block 52 fits with the external connection notch 21.

[0024] Through the above technical solution, the internal positioning block 42 is formed during the injection molding process of the inner fluorine lining layer 4 and fits with the internal connection notch 31. The setting of the internal connection notch 31 improves the structural strength after the connection between the inner fluorine lining layer 4 and the inner wall of the steel pipe 1, avoids the axial sliding of the inner fluorine lining layer 4 and the steel pipe 1, and improves the stability during use.

[0025] As a specific embodiment of the improvement, the side of the external connection notch 21 close to the steel pipe 1 is wide, and the side far from the steel pipe 1 is narrow.

[0026] Through the above technical solution, the side of the external connection notch 21 close to the steel pipe 1 is wide, and the side far from the steel pipe 1 is narrow, making the outer fluorine lining layer 5 fit more tightly with the outer wall of the seamless steel pipe 1 and having high strength after connection.

[0027] As a specific embodiment of the improvement, an internal connection notch 31 is provided on the reinforcing protrusion 3, an internal positioning block 42 is provided in the internal positioning groove 41, the internal positioning block 42 is embedded in the internal connection notch 31, and the internal positioning block 42 fits with the internal connection notch 31.

[0028] Through the above technical solution, the internal positioning block 42 is formed during the injection molding process of the inner fluorine lining layer 4 and fits with the internal connection notch 31. The setting of the internal connection notch 31 improves the structural strength after the connection between the inner fluorine lining layer 4 and the inner wall of the steel pipe 1, avoids the axial sliding of the inner fluorine lining layer 4 and the steel pipe 1, and improves the stability during use.

[0029] As a specific embodiment of the improvement, the side of the internal connection notch 31 close to the steel pipe 1 is wide, and the side far from the steel pipe 1 is narrow.

[0030] Through the above technical solution, the side of the internal connection notch 31 close to the steel pipe 1 is wide, and the side far from the steel pipe 1 is narrow, making the inner fluorine lining layer 4 fit more tightly with the inner wall of the seamless steel pipe 1 and having high strength after connection.

[0031] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. Corrosion-resistant and bend-resistant stainless steel pipe, comprising a steel pipe (1) body, characterized in that: On the outer side of the main body of the steel pipe (1), there are axially extending reinforcing ribs (2). On the inner side of the main body of the steel pipe (1), there is an inner fluorine lining layer (4). On the outer side of the main body of the steel pipe (1), there is an outer fluorine lining layer (5). An outer positioning groove (51) is provided on the outer fluorine lining layer (5), and the reinforcing rib (2) is embedded in the outer positioning groove (51).

2. The corrosion-resistant and bend-resistant stainless steel pipe according to claim 1, wherein: On the inner side of the main body of the steel pipe (1), there are axially extending reinforcing protrusions (3). On the inner fluorine lining layer (4), there are axially extending inner positioning grooves (41), and the reinforcing protrusions (3) are embedded in the inner positioning grooves (41).

3. The corrosion-resistant and bending-resistant stainless steel pipe according to claim 2, wherein: The reinforcing protrusions (3) are offset from the reinforcing ribs (2).

4. The corrosion-resistant and bend-resistant stainless steel pipe according to claim 1, wherein: An outer connection notch (21) is provided on the reinforcing rib (2). An outer positioning block (52) is provided in the outer positioning groove (51), and the outer positioning block (52) is embedded in the outer connection notch (21), and the outer positioning block (52) fits with the outer connection notch (21).

5. The corrosion-resistant and bend-resistant stainless steel pipe according to claim 4, characterized in that: The side of the outer connection notch (21) close to the steel pipe (1) is wide, and the side far from the steel pipe (1) is narrow.

6. The corrosion-resistant and bend-resistant stainless steel pipe according to claim 2 or 3, characterized in that: An inner connection notch (31) is provided on the reinforcing protrusion (3). An inner positioning block (42) is provided in the inner positioning groove (41), and the inner positioning block (42) is embedded in the inner connection notch (31), and the inner positioning block (42) fits with the inner connection notch (31).

7. The corrosion-resistant and bend-resistant stainless steel pipe according to claim 6, wherein: The side of the inner connection notch (31) close to the steel pipe (1) is wide, and the side far from the steel pipe (1) is narrow.

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