High-quality pre-welded pipe
By setting continuously arranged chain elements on the side walls of the welded pipe body on both sides of the welded seam and opening concave filling holes at both ends of the chain elements, the problem of insufficient firmness and thermal expansion and contraction of the welding connection is solved, and the welding quality and strength of the welded pipe is improved.
Patent Information
- Application Number
- CN202422228634.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The lack of structural design of existing welded pipes during welding, resulting in insufficient firmness of the welded connections and the thermal expansion and contraction of the welds are not considered, which affects the reliability of the welded pipes.
The continuous array of strands are arranged on the side walls of the welded pipe body on both sides of the welded seam. The strands are line-shaped and vertically arranged, arranged in dislocation, and concave filling holes are opened at both ends of the strand to improve the grip and welding firmness of the weld connection, while adapting to the thermal expansion and contraction of the weld.
The welding quality and strength of the welded pipes are improved, the firmness of the weld joints is improved, and the design of the concave fill holes enhances the stability of welding and adapts to the thermal expansion, cold contraction and deformation of the weld.
Smart Images
Figure CN223057001U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of welded pipes, in particular to a high-quality pre-welded pipe. Background Art
[0002] Welded steel pipes, also known as welded tubes, are steel pipes made by welding steel plates or strips after coiling. The process flow of welded pipes is raw material uncoiling - leveling - end shearing and welding - loop - forming - welding - removal of internal and external weld beads - pre-correction - induction heat treatment - sizing and straightening - eddy current testing - cutting - hydrostatic inspection - pickling - final inspection (strict control) - packaging - shipping. The products are widely used in water supply projects, petrochemical industries, chemical industries, power industries, agricultural irrigation, and urban construction. Among them, the welding process is the most important step, and the quality of the welded pipe is directly affected by the quality of welding.
[0003] Generally, when welding ordinary welded pipes, no structural design is carried out at the welding part, and they are directly welded into shape. However, if there is a corresponding structural design for welding at the welding part, the firmness of the welded joint will be qualitatively improved. Moreover, traditional welding does not consider the thermal expansion and contraction problems of the weld seam, reducing the reliability of the welded pipe.
[0004] Therefore, to solve the above problems, the utility model provides a high-quality pre-welded pipe. Continuous chain teeth are arranged on the side walls of the pipe body on both sides of the weld seam. After welding, the chain teeth can improve the gripping force of the weld joint, thereby improving the firmness. Content of the Utility Model
[0005] The main technical problem to be solved by the utility model is to provide a high-quality pre-welded pipe, which can enable the welded pipe to have good welding quality and higher pipe strength.
[0006] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a high-quality pre-welded pipe, including a pipe body. One end of the pipe body is provided with a weld seam. Continuous chain teeth are arranged on the side walls of the pipe body on both sides of the weld seam. The chain teeth are linear and vertically arranged. The chain teeth are arranged in a straight line on the side wall of the pipe body. The chain teeth on the side walls of the pipe body on both sides of the weld seam are arranged in a staggered manner. Concave filling holes are provided on the side walls of the pipe body at both ends of the chain teeth.
[0007] In a preferred embodiment of the utility model, the pipe body is a square pipe or a circular pipe.
[0008] In a preferred embodiment of the utility model, the concave filling holes are recessed into the side wall of the pipe body and are provided at both ends of the chain teeth arranged in a straight line.
[0009] In a preferred embodiment of the present utility model, the chain teeth are linear protrusions, and the chain teeth protrude from the side wall of the welded pipe body.
[0010] In a preferred embodiment of the present utility model, the chain teeth are linear grooves, and the chain teeth are recessed in the side wall of the welded pipe body.
[0011] The beneficial effects of the present utility model are as follows: The present utility model enables the welded pipe to have good welding quality and higher strength. Continuous chain teeth are provided on the side walls of the welded pipe body on both sides of the weld. After welding, the chain teeth can improve the gripping force of the connection part of the weld, thereby improving the firmness and enabling the welded pipe to have good strength. Concave filling holes are provided on the side walls of the welded pipe body at both ends of the chain teeth. The concave filling holes are recessed, and their structures are different from those of the chain teeth. By using different shapes, the gripping points of the connection part are diversified, and the welding is more firm. Moreover, the recessed characteristics of the concave filling holes are beneficial to the thermal expansion and contraction of the weld. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, where:
[0013] Figure 1 is a schematic structural diagram of a preferred embodiment of a high-quality pre-welded pipe of the present utility model;
[0014] The markings of each component in the drawings are as follows: 1. Welded pipe body; 2. Weld; 3. Chain teeth; 4. Concave filling holes. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only some of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0016] Please refer to Figure 1 , the embodiments of the present utility model include:
[0017] A high-quality pre-welded steel pipe, comprising a steel pipe body 1, one end of the steel pipe body 1 is provided with a weld 2, continuous chain teeth 3 are arranged on the side walls of the steel pipe body 1 on both sides of the weld 2, the chain teeth 3 are linear and the chain teeth 3 are arranged vertically, the chain teeth 3 are arranged in a straight line on the side wall of the steel pipe body 1, the chain teeth on the side walls of the steel pipe on both sides of the weld 2 are arranged in a staggered manner, and concave filling holes 4 are arranged on the side walls of the steel pipe body 1 at both ends of the chain teeth 3.
[0018] In addition, the steel pipe body 1 is a square pipe or a circular pipe.
[0019] In addition, the concave filling holes 4 are recessed into the side wall of the steel pipe body 1, and the concave filling holes 4 are arranged at both ends of the chain teeth 3 arranged in a straight line.
[0020] In addition, the chain teeth 3 are linear convex blocks, and the chain teeth 3 protrude from the side wall of the steel pipe body 1.
[0021] In addition, the chain teeth 3 are linear grooves, and the chain teeth 3 are recessed into the side wall of the steel pipe body 1.
[0022] The product structure of the present utility model is that one end of the steel pipe body 1 is provided with a weld 2, continuous chain teeth 3 are arranged on the side walls of the steel pipe body 1 on both sides of the weld 2, the chain teeth 3 are linear and the chain teeth 3 are arranged vertically, the chain teeth 3 are arranged in a straight line on the side wall of the steel pipe body 1, the chain teeth on the side walls of the steel pipe on both sides of the weld 2 are arranged in a staggered manner, and concave filling holes 4 are arranged on the side walls of the steel pipe body 1 at both ends of the chain teeth 3.
[0023] It can enable the steel pipe to have good welding quality, the steel pipe has higher strength, continuous chain teeth are arranged on the side walls of the steel pipe body on both sides of the weld, and the chain teeth can improve the gripping force of the connection part of the weld after welding, thereby improving the firmness and enabling the steel pipe to have good strength. Concave filling holes are arranged on the side walls of the steel pipe body at both ends of the chain teeth, and the concave filling holes are recessed. The structure is different from that of the chain teeth. Different shapes are used to diversify the gripping points of the connection part, and the welding is more firm. Moreover, the recessed characteristics of the concave filling holes are beneficial to the thermal expansion and contraction of the weld.
[0024] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.
Claims
1. A high-quality pre-welded welded pipe, comprising a welded pipe body, characterized in that, One end of the welded pipe body is provided with a weld seam. Continuous chain teeth are arranged on the side walls of the welded pipe body on both sides of the weld seam. The chain teeth are linear and vertically arranged. The chain teeth are arranged in a straight line on the side wall of the welded pipe body. The chain teeth on the side walls of the welded pipe on both sides of the weld seam are arranged in a staggered manner. Concave filling holes are formed on the side walls of the welded pipe body at both ends of the chain teeth.
2. A high-quality pre-welded welded pipe according to claim 1, wherein The welded pipe body is a square pipe or a circular pipe.
3. A high-quality pre-welded welded pipe according to claim 1, characterized in that, The concave filling holes are recessed into the side wall of the welded pipe body and are arranged at both ends of the chain teeth arranged in a straight line.
4. A high-quality pre-welded welded pipe according to claim 1, characterized in that, The chain teeth are linear convex blocks and protrude from the side wall of the welded pipe body.
5. A high-quality pre-welded welded pipe according to claim 1, characterized in that, The chain teeth are linear grooves and are recessed into the side wall of the welded pipe body.