Seamless steel tube with spiral reinforcing ribs

Abstract

The utility model discloses a seamless steel pipe with a spiral reinforcing rib. The seamless steel pipe comprises a steel pipe main body, the spiral reinforcing rib and an embedded support ring, the spiral reinforcing ribs are continuously and spirally distributed along the outer wall of the steel pipe, the sections are trapezoidal, the inner sides are welded and fixed, and anti-skid lines are arranged on the outer wall; the embedded supporting rings are arranged on the inner walls of the two ends of the steel pipe, matched with the clamping grooves for positioning through the protruding parts and provided with elastic gaskets and sealing rings. A flow guide groove is formed in the outer wall of the lining pipe. Stress concentration can be effectively dispersed, the strength, deformation resistance and sealing performance of the steel pipe are improved, the internal structure is optimized, the service life is prolonged, and meanwhile the steel pipe has the wear-resisting and anti-corrosion characteristics and is suitable for various complex working condition environments.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of steel pipe manufacturing and structure reinforcement, particularly to a spiral reinforcing rib seamless steel pipe. BACKGROUND

[0002] A seamless steel pipe is a kind of long strip steel with hollow section and no joint on the periphery, which is widely used in petroleum, chemical industry, electric power, machinery and other fields. According to different use requirements, the seamless steel pipe needs to have high strength, high pressure resistance and good deformation resistance, so its material and structure design is continuously optimized with the progress of technology. In some special application scenarios, such as high pressure delivery or complex stress environment, the structure strength of the seamless steel pipe may be insufficient due to external load or internal pressure, thereby affecting the service life and safety.

[0003] The Chinese patent with patent number CN20192134587X discloses an enhanced seamless steel pipe, which includes a steel pipe body and a plurality of annular reinforcing ribs arranged on the outer wall thereof. The annular reinforcing ribs are uniformly distributed along the axial direction of the steel pipe to improve the overall rigidity and pressure resistance of the steel pipe. Through this structural design, the steel pipe can better disperse stress when bearing radial pressure, thereby improving its carrying capacity. At the same time, the arrangement of the annular reinforcing ribs also enhances the bending resistance of the steel pipe, making it suitable for more complex working conditions.

[0004] However, the inventors found during the conception and implementation of the above-mentioned application that the above-mentioned disclosed scheme has the problem that although the annular reinforcing rib can improve the radial strength of the steel pipe, its effect is relatively limited when dealing with stress in the spiral direction. In addition, the processing technology of the annular reinforcing rib is relatively complex, which may increase the production cost and manufacturing difficulty. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a spiral reinforcing rib seamless steel pipe, which solves the problem mentioned in the background art.

[0006] The utility model is implemented as follows: a spiral reinforcing rib seamless steel pipe, which includes a steel pipe body, a spiral reinforcing rib arranged on the outer wall of the steel pipe body, the spiral reinforcing rib being continuously distributed in a spiral shape along the axial direction of the steel pipe body, and the cross section of the spiral reinforcing rib being in a trapezoidal structure, the inner side of the spiral reinforcing rib being fixedly connected with the outer wall of the steel pipe body by welding, and the spiral reinforcing rib seamless steel pipe further including:

[0007] a set of embedded support rings arranged on the inner walls of both ends of the steel pipe body, the outer diameter of the embedded support ring being matched with the inner diameter of the steel pipe body, and a plurality of evenly distributed grooves being formed in the inner side wall of the embedded support ring;

[0008] The outer side wall of the embedded support ring is provided with a plurality of protrusions, which are matched and connected with corresponding clamping grooves on the inner wall of the steel pipe body to realize positioning of the embedded support ring in the steel pipe body.

[0009] The outer side wall of the spiral reinforcing rib is provided with a plurality of evenly distributed anti-skid lines, the depth of the anti-skid lines is 0.5mm to 1mm, the width of the anti-skid lines is 2mm to 3mm, and the spacing between adjacent two anti-skid lines is 4mm to 6mm.

[0010] Optionally, the inner side wall of the embedded support ring is further provided with a plurality of elastic washers, one end of the elastic washer is fixedly connected with the inner side wall of the embedded support ring, the other end is in contact with the inner wall of the steel pipe body, the elastic washer is made of rubber material, and the thickness is 2mm to 3mm.

[0011] Optionally, it further comprises an inner liner pipe arranged in the steel pipe body, the outer diameter of the inner liner pipe is smaller than the inner diameter of the steel pipe body, and the two ends of the inner liner pipe are fixedly connected with the inner side wall of the embedded support ring, the outer wall of the inner liner pipe is provided with a plurality of evenly distributed flow guide grooves, the flow guide grooves extend along the axial direction of the inner liner pipe, and the cross section of the flow guide grooves is semicircular with a depth of 1mm to 2mm.

[0012] Optionally, a filling layer is arranged between the outer wall of the inner liner pipe and the inner wall of the steel pipe body, the filling layer is composed of epoxy resin material, the thickness is 3mm to 5mm, the outer side of the filling layer is tightly combined with the inner wall of the steel pipe body, and the inner side is tightly combined with the outer wall of the inner liner pipe.

[0013] Optionally, the outer side wall of the embedded support ring is further provided with a plurality of sealing rings, the sealing ring is located at the gap between the embedded support ring and the inner wall of the steel pipe body, the cross section of the sealing ring is O-shaped with a diameter of 5mm to 8mm, and the material is silica gel.

[0014] Optionally, the outer side wall of the spiral reinforcing rib is further provided with a plurality of evenly distributed wear-resistant coatings, the thickness of the wear-resistant coating is 0.2mm to 0.5mm, the material is polytetrafluoroethylene, and the wear-resistant coating covers the outer surface of the spiral reinforcing rib and the surface of the anti-skid lines.

[0015] Optionally, the inner side wall of the embedded support ring is further provided with a plurality of positioning pins, one end of the positioning pin is fixedly connected with the inner side wall of the embedded support ring, the other end is inserted into the corresponding positioning hole on the inner wall of the steel pipe body, the length of the positioning pin is 5mm to 8mm, and the diameter is 2mm to 3mm.

[0016] Optionally, the inner side wall of the spiral reinforcing rib is further provided with a plurality of uniformly distributed reinforcing ribs, the reinforcing ribs extend along the axial direction of the spiral reinforcing rib, and the cross section of the reinforcing rib is rectangular, the height is 2mm to 3mm, and the width is 1mm to 2mm.

[0017] Optionally, the outer side wall of the embedded support ring is further provided with a plurality of uniformly distributed heat dissipation holes, the heat dissipation holes penetrate through the thickness direction of the embedded support ring, and the diameter of the heat dissipation hole is 3mm to 5mm, and the spacing between adjacent two heat dissipation holes is 10mm to 15mm.

[0018] Optionally, the outer side wall of the spiral reinforcing rib is further provided with a plurality of uniformly distributed anticorrosion coatings, the thickness of the anticorrosion coating is 0.1mm to 0.3mm, the material is epoxy zinc-rich paint, and the anticorrosion coating covers the outer surface of the spiral reinforcing rib and the surface of the anti-skid pattern.

[0019] The technical effect of the utility model: the utility model discloses a spiral reinforcing rib is arranged on the outer wall of the steel pipe body, utilizes the continuous spiral distribution characteristics of the spiral reinforcing rib, can effectively disperse the stress concentration phenomenon of steel pipe when bearing external load or internal pressure, thereby improving the overall strength and deformation resistance of steel pipe. The trapezoidal cross section design of the spiral reinforcing rib further enhances its carrying capacity, and the setting of the anti-skid pattern improves the friction coefficient of the steel pipe surface, so that it has better stability under complex working conditions. The introduction of the embedded support ring not only realizes the accurate positioning of the two ends of the steel pipe, but also improves the sealing performance and shock resistance of the steel pipe through the design of the elastic gasket and the sealing ring. The combination of the inner lining pipe and the filling layer further optimizes the internal structure of the steel pipe, and the design of the flow guide groove can effectively guide the fluid flow, reduce the impact of the fluid on the inner wall of the steel pipe and prolong the service life of the steel pipe. In addition, the application of wear-resistant coating and anticorrosion coating significantly improves the durability and corrosion resistance of the steel pipe, so that it is suitable for more extensive use environment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic view of the spiral reinforcing rib seamless steel pipe of the utility model, shows the distribution of the spiral reinforcing rib on the outer wall of the steel pipe body and the setting position of the embedded support ring at the two ends of the steel pipe.

[0021] Figure 2 It is the overall structure schematic view of the spiral reinforcing rib seamless steel pipe of the utility model, Figure 1 The partial structure schematic view.

[0022] Figure 3 It is the sectional structure schematic view of the spiral reinforcing rib of the utility model.

[0023] The reference signs are as follows: 1, steel pipe body; 2, spiral reinforcing rib; 3, embedded support ring; 4, groove; 5, protruding part; 6, elastic gasket; 7, anti-skid line; 8, wear-resistant coating; 9, anticorrosive coating. DETAILED DESCRIPTION

[0024] The utility model provides a spiral reinforcing rib seamless steel pipe, and its specific implementation mode is described in detail in combination with the drawings. Figure 1 As shown in the figure, the spiral reinforcing rib seamless steel pipe comprises a steel pipe body 1, and a spiral reinforcing rib 2 is arranged on the outer wall of the steel pipe body 1; the spiral reinforcing rib 2 is continuously distributed in a spiral shape along the axial direction of the steel pipe body 1, and the cross section of the spiral reinforcing rib 2 is in a trapezoidal structure. The inner side of the spiral reinforcing rib 2 is fixedly connected with the outer wall of the steel pipe body 1 through welding, the welding position is uniform and continuous, and a firm overall structure is formed between the spiral reinforcing rib 2 and the steel pipe body 1. A group of embedded support rings 3 are arranged on the inner walls of the two ends of the steel pipe body 1 respectively, the outer diameter of the embedded support ring 3 matches the inner diameter of the steel pipe body 1, a plurality of evenly distributed grooves 4 are formed in the inner side wall of the embedded support ring 3, the depth of the groove 4 is 2mm to 3mm, the width is 5mm to 8mm, and the spacing between the adjacent two grooves 4 is 10mm to 15mm. A plurality of protruding parts 5 are arranged on the outer side wall of the embedded support ring 3, the height of the protruding part 5 is 2mm to 3mm, the width is 3mm to 5mm, the number of the protruding parts 5 is consistent with the number of the clamping grooves on the inner wall of the steel pipe body 1, and the protruding part 5 is inserted into the clamping groove to realize the positioning of the embedded support ring 3 in the steel pipe body 1.

[0025] Further in combination with Figure 2 A plurality of elastic gaskets 6 are further arranged on the inner side wall of the embedded support ring 3, one end of the elastic gasket 6 is fixed on the inner side wall of the embedded support ring 3 through an adhesive, the other end is in contact with the inner wall of the steel pipe body 1, the thickness of the elastic gasket 6 is 2mm to 3mm, the material is rubber, and the hardness range is Shore hardness 50 to 70. The arrangement of the elastic gasket 6 can effectively reduce the stress transmission of the steel pipe body 1 when the steel pipe body 1 is subjected to external vibration or impact, and simultaneously improve the sealing performance of the steel pipe body 1. A plurality of sealing rings are further arranged on the outer side wall of the embedded support ring 3, the sealing ring is located at the gap between the embedded support ring 3 and the inner wall of the steel pipe body 1, the cross section of the sealing ring is in an O shape, the diameter is 5mm to 8mm, the material is silica gel, and the hardness range is Shore hardness 40 to 60. The arrangement of the sealing ring can further enhance the sealing performance of the steel pipe body 1, and prevent fluid from leaking from the gap between the embedded support ring 3 and the steel pipe body 1.

[0026] In combination with Figure 3The outer side wall of the spiral reinforcing rib 2 is provided with a plurality of evenly distributed anti-skid lines 7, the depth of the anti-skid lines 7 is 0.5mm to 1mm, the width is 2mm to 3mm, and the spacing between adjacent two anti-skid lines 7 is 4mm to 6mm. The setting of the anti-skid lines 7 can increase the roughness of the outer surface of the spiral reinforcing rib 2, thereby improving the stability of the steel pipe body 1 under complex working conditions. The outer side wall of the spiral reinforcing rib 2 is also provided with a wear-resistant coating 8, the thickness of the wear-resistant coating 8 is 0.2mm to 0.5mm, the material is polytetrafluoroethylene, and the wear-resistant coating 8 covers the outer surface of the spiral reinforcing rib 2 and the surface of the anti-skid lines 7. The setting of the wear-resistant coating 8 can effectively reduce the wear of the spiral reinforcing rib 2 caused by friction during use, prolong the service life of the steel pipe body 1. In addition, the outer side wall of the spiral reinforcing rib 2 is also provided with a corrosion-resistant coating 9, the thickness of the corrosion-resistant coating 9 is 0.1mm to 0.3mm, the material is epoxy zinc-rich coating, and the corrosion-resistant coating 9 covers the outer surface of the spiral reinforcing rib 2 and the surface of the anti-skid lines 7. The setting of the corrosion-resistant coating 9 can effectively prevent the spiral reinforcing rib 2 from being corroded in harsh environments, and improve the durability of the steel pipe body 1.

[0027] The inside of the steel pipe body 1 is provided with an inner liner pipe, the outer diameter of the inner liner pipe is smaller than the inner diameter of the steel pipe body 1, and the two ends of the inner liner pipe are fixedly connected with the inner side wall of the embedded support ring 3 in a welding manner. The welding positions are uniformly continuous, ensuring that a firm overall structure is formed between the inner liner pipe and the embedded support ring 3. The outer wall of the inner liner pipe is provided with a plurality of evenly distributed flow guide grooves, the flow guide grooves extend along the axial direction of the inner liner pipe, the cross section of the flow guide grooves is semicircular, the depth is 1mm to 2mm, the width is 5mm to 8mm, and the spacing between adjacent two flow guide grooves is 10mm to 15mm. The setting of the flow guide grooves can guide the fluid to flow along the axial direction of the inner liner pipe, reduce the impact of the fluid on the inner wall of the steel pipe body 1, and thereby reduce the wear degree of the steel pipe body 1. A filling layer is arranged between the outer wall of the inner liner pipe and the inner wall of the steel pipe body 1, the filling layer is composed of epoxy resin material, the thickness is 3mm to 5mm, the outer side of the filling layer is tightly attached to the inner wall of the steel pipe body 1, and the inner side is tightly attached to the outer wall of the inner liner pipe. The setting of the filling layer can effectively enhance the pressure resistance of the steel pipe body 1, and at the same time, play a buffering role to reduce the influence of external load on the steel pipe body 1.

[0028] The inner side wall of the embedded support ring 3 is also provided with a plurality of positioning pins, one end of the positioning pin is fixed on the inner side wall of the embedded support ring 3 through threaded connection or welding, the other end is inserted into the corresponding positioning hole on the inner wall of the steel pipe body 1, the length of the positioning pin is 5mm to 8mm, and the diameter is 2mm to 3mm. The setting of the positioning pin can further enhance the positioning accuracy of the embedded support ring 3 in the steel pipe body 1, and prevent the displacement of the embedded support ring 3 in the use process. The outer side wall of the embedded support ring 3 is also provided with a plurality of uniformly distributed heat dissipation holes, the heat dissipation holes penetrate through the thickness direction of the embedded support ring 3, the diameter of the heat dissipation hole is 3mm to 5mm, and the spacing between the adjacent two heat dissipation holes is 10mm to 15mm. The setting of the heat dissipation hole can effectively dissipate the heat generated by the steel pipe body 1 in the use process, and prevent the deformation of the steel pipe body 1 due to the high temperature.

[0029] The inner side wall of the spiral reinforcing rib 2 is also provided with a plurality of uniformly distributed reinforcing ribs, the reinforcing rib extends along the axial direction of the spiral reinforcing rib 2, the cross section of the reinforcing rib is rectangular, the height is 2mm to 3mm, the width is 1mm to 2mm, and the spacing between the adjacent two reinforcing ribs is 5mm to 10mm. The setting of the reinforcing rib can further enhance the carrying capacity of the spiral reinforcing rib 2, so that it is not easy to deform when bearing external load. The reinforcing rib and the inner side wall of the spiral reinforcing rib 2 are fixedly connected through welding, the welding part is uniform and continuous, and a firm overall structure is formed between the reinforcing rib and the spiral reinforcing rib 2.

[0030] The spiral reinforcing rib seamless steel pipe has high strength and deformation resistance in actual application, and is suitable for high-pressure conveying pipelines, building structure supports and the like. In the application scene of the high-pressure conveying pipeline, the spiral reinforcing rib 2 arranged on the outer wall of the steel pipe body 1 can effectively disperse the pressure of the external load on the steel pipe body 1, and the combination of the inner lining pipe and the filling layer can reduce the impact of the fluid on the inner wall of the steel pipe body 1, thereby prolonging the service life of the steel pipe body 1. In the application scene of the building structure support, the embedded support ring 3 can realize accurate positioning of both ends of the steel pipe body 1, and the design of the elastic gasket 6 and the sealing ring can improve the anti-seismic performance and sealing performance of the steel pipe body 1, thereby ensuring the stability of the steel pipe body 1 under complex working conditions.

[0031] In order to better enable the relevant personnel in the technical field to fully understand and implement the utility model, the specific implementation principle of the utility model is further described in conjunction with a specific application scene.

[0032] In the application scenario of high-pressure conveying pipeline, the spiral reinforcing rib seamless steel pipe is first installed to the predetermined position. The spiral reinforcing rib 2 provided on the outer wall of the steel pipe body 1 is continuously distributed in the axial direction in a spiral shape, and its cross section is in a trapezoidal structure, and is firmly connected with the steel pipe body 1 by welding. When external load is applied to the steel pipe body 1, the spiral reinforcing rib 2 can disperse the radial pressure in the spiral direction to avoid the occurrence of stress concentration phenomenon. This dispersion effect is mainly realized through the geometric shape and material properties of the spiral reinforcing rib 2, and the trapezoidal cross section design increases the bending stiffness of the reinforcing rib, thereby improving the carrying capacity of the overall structure.

[0033] Further, in the fluid conveying process, the inner liner pipe and the filling layer jointly play a role to reduce the impact of the fluid on the inner wall of the steel pipe body 1. The outer wall of the inner liner pipe is provided with a flow guide groove extending in the axial direction of the inner liner pipe, and the cross section of the flow guide groove is designed in a semicircular shape, so that a stable flow field is formed when the fluid flows along the flow guide groove, reducing the erosion effect of turbulent flow on the inner wall of the steel pipe. At the same time, the filling layer between the inner liner pipe and the steel pipe body 1 is composed of epoxy resin material, and the thickness is 3mm to 5mm, and the elastic properties can absorb part of the external vibration and impact energy, thereby effectively buffering the influence of external load on the steel pipe body 1.

[0034] The embedded support ring 3 ensures the accurate positioning of the two ends of the steel pipe body 1. The inner side wall of the embedded support ring 3 is provided with a plurality of grooves 4, the depth of the groove 4 is 2mm to 3mm, the width is 5mm to 8mm, and the spacing between adjacent two grooves 4 is 10mm to 15mm. The design of these grooves 4 not only reduces the weight of the embedded support ring 3, but also provides better deformation adaptability. The outer side wall of the embedded support ring 3 is provided with a protruding part 5, which is inserted into the clamping groove on the inner wall of the steel pipe body 1, and the positioning is realized by mechanical cooperation. In addition, the elastic gasket 6 provided on the inner side wall of the embedded support ring 3 can effectively reduce the stress transmission of the external vibration or impact to the steel pipe body 1. The elastic gasket 6 is made of rubber material, and the thickness is 2mm to 3mm, and the hardness range is Shore hardness 50 to 70, and the elastic deformation characteristics can provide additional buffering effect when stressed. A sealing ring is also provided between the embedded support ring 3 and the inner wall of the steel pipe body 1, the cross section of the sealing ring is O-shaped, the diameter is 5mm to 8mm, the material is silica gel, and the hardness range is Shore hardness 40 to 60, and the compression deformation characteristics can effectively prevent fluid leakage and improve the sealing performance of the steel pipe body 1.

[0035] The anti-skid lines 7 on the outer side wall of the spiral reinforcing rib 2 play a role in increasing the surface roughness under complex working conditions. The depth of the anti-skid lines 7 is 0.5mm to 1mm, the width is 2mm to 3mm, and the spacing between adjacent two anti-skid lines 7 is 4mm to 6mm. This design can improve the stability of the steel pipe body 1 under complex working conditions, especially when in contact with other components, the anti-skid lines 7 can increase the friction to prevent relative sliding. In addition, the outer side wall of the spiral reinforcing rib 2 is covered with a wear-resistant coating 8 and a corrosion-resistant coating 9. The thickness of the wear-resistant coating 8 is 0.2mm to 0.5mm, and the material is polytetrafluoroethylene, which has low friction coefficient characteristics to reduce wear caused by friction; the thickness of the corrosion-resistant coating 9 is 0.1mm to 0.3mm, and the material is epoxy zinc-rich coating, which has chemical stability to effectively prevent the spiral reinforcing rib 2 from being corroded in harsh environments, prolonging the service life of the steel pipe body 1.

[0036] The inner side wall of the embedded support ring 3 is also provided with a plurality of positioning pins. One end of the positioning pin is fixed on the inner side wall of the embedded support ring 3 through threaded connection or welding, and the other end is inserted into the corresponding positioning hole on the inner wall of the steel pipe body 1. The length of the positioning pin is 5mm to 8mm, and the diameter is 2mm to 3mm. The design of the positioning pin further enhances the positioning accuracy of the embedded support ring 3 in the steel pipe body 1, preventing displacement during use. The outer side wall of the embedded support ring 3 is also provided with a plurality of heat dissipation holes. The heat dissipation holes penetrate the thickness direction of the embedded support ring 3. The diameter of the heat dissipation hole is 3mm to 5mm, and the spacing between adjacent two heat dissipation holes is 10mm to 15mm. The design of the heat dissipation hole can effectively dissipate the heat generated by the steel pipe body 1 during use, preventing the steel pipe body 1 from deforming due to high temperature.

[0037] Finally, a plurality of reinforcing ribs are arranged on the inner side wall of the spiral reinforcing rib 2. The reinforcing ribs extend along the axial direction of the spiral reinforcing rib 2, and the cross section of the reinforcing ribs is rectangular. The height of the reinforcing rib is 2mm to 3mm, the width is 1mm to 2mm, and the spacing between adjacent two reinforcing ribs is 5mm to 10mm. The design of the reinforcing rib further enhances the load-bearing capacity of the spiral reinforcing rib 2, making it less likely to deform under external load. The reinforcing rib and the inner side wall of the spiral reinforcing rib 2 are fixedly connected by welding. The welding part is uniform and continuous, ensuring that the two form a firm overall structure.

[0038] Through the combination of the above steps and principles, the spiral reinforcing rib seamless steel pipe of the present application can exhibit excellent strength, anti-deformation ability and durability under complex working conditions such as high-pressure conveying pipelines, meeting the actual application requirements.

[0039] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A spiral-rib seamless steel pipe comprising a steel pipe main body (1), characterized by, The outer wall of the steel pipe body (1) is provided with a spiral reinforcing rib (2), which is continuously distributed in the axial direction of the steel pipe body (1) and has a trapezoidal structure in cross section, and the inner side of the spiral reinforcing rib (2) is fixedly connected with the outer wall of the steel pipe body (1) by welding. A set of embedded support rings (3) are arranged on the inner walls of both ends of the steel pipe body (1), the outer diameter of the embedded support ring (3) matches the inner diameter of the steel pipe body (1), and a plurality of evenly distributed grooves (4) are formed in the inner side wall of the embedded support ring (3), a plurality of protrusions (5) are arranged on the outer side wall of the embedded support ring (3), and the protrusions (5) are connected with the corresponding clamping grooves on the inner wall of the steel pipe body (1); wherein the outer side wall of the spiral reinforcing rib (2) is provided with a plurality of evenly distributed anti-skid lines (7), the depth of the anti-skid lines (7) is 0.5-1mm, the width is 2-3mm, and the distance between adjacent two anti-skid lines (7) is 4-6mm.

2. A spiral-wound, reinforced, seamless steel pipe as defined in claim 1, characterized in that The inner side wall of the embedded support ring (3) is also provided with a plurality of elastic washers (6), one end of the elastic washer (6) is fixedly connected with the inner side wall of the embedded support ring (3), and the other end is in contact with the inner wall of the steel pipe body (1), the elastic washer (6) is made of rubber material, and the thickness is 2-3mm.

3. A spiral-wound, reinforced, seamless steel pipe as defined in claim 1, wherein, It also includes an inner liner arranged inside the steel pipe body (1), the outer diameter of the inner liner is smaller than the inner diameter of the steel pipe body (1), and the two ends of the inner liner are fixedly connected with the inner side wall of the embedded support ring (3), a plurality of evenly distributed flow guide grooves are arranged on the outer wall of the inner liner, the flow guide grooves extend in the axial direction of the inner liner, and the cross section of the flow guide grooves is semicircular with a depth of 1-2mm.

4. A spiral-wound ribbed seamless steel tube as claimed in claim 3, characterized in that The outer wall of the inner liner and the inner wall of the steel pipe body (1) are provided with a filling layer, the filling layer is made of epoxy resin material, the thickness is 3-5mm, the outer side of the filling layer is tightly attached to the inner wall of the steel pipe body (1), and the inner side is tightly attached to the outer wall of the inner liner.

5. A spiral-wound ribbed seamless steel tube as claimed in claim 1, characterized in that The outer side wall of the embedded support ring (3) is also provided with a plurality of sealing rings, the sealing rings are located at the gap between the embedded support ring (3) and the inner wall of the steel pipe body (1), the cross section of the sealing ring is O-shaped, the diameter is 5-8mm, and the material is silica gel.

6. A spiral-wound, reinforced, seamless steel pipe according to claim 1, characterized in that The outer side wall of the spiral reinforcing rib (2) is also provided with a plurality of evenly distributed wear-resistant coatings (8), the thickness of the wear-resistant coating (8) is 0.2-0.5mm, the material is polytetrafluoroethylene, and the wear-resistant coating (8) covers the outer surface of the spiral reinforcing rib (2) and the surface of the anti-skid lines (7).

7. A spiral-wound ribbed seamless steel tube as claimed in claim 1, characterized in that The inner side wall of the embedded support ring (3) is also provided with a plurality of positioning pins, one end of the positioning pin is fixedly connected with the inner side wall of the embedded support ring (3), and the other end is inserted into the corresponding positioning hole on the inner wall of the steel pipe body (1), the length of the positioning pin is 5-8mm, and the diameter is 2-3mm.

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