CN216896189U - Composite layer steel pipe - Google Patents
Composite layer steel pipe Download PDFInfo
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- CN216896189U CN216896189U CN202220393595.1U CN202220393595U CN216896189U CN 216896189 U CN216896189 U CN 216896189U CN 202220393595 U CN202220393595 U CN 202220393595U CN 216896189 U CN216896189 U CN 216896189U
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Abstract
The utility model relates to the technical field of municipal engineering materials, in particular to a composite layer steel pipe which comprises at least two steel pipes, namely a first steel pipe and a second steel pipe, wherein the first steel pipe and the second steel pipe are formed by coiling strip-shaped steel strips, the side parts of the adjacent steel strips are welded and connected, and the welded parts form a welding area; the outer diameter of the second steel pipe is smaller than the inner diameter of the first steel pipe, the second steel pipe is arranged in the first steel pipe, and the inner part of the first steel pipe and the periphery of the second steel pipe are bonded and connected by heat insulating materials or waterproof coatings; the coiling direction of the first steel pipe steel strip is the same as that of the second steel pipe steel strip, and the welding areas of the first steel pipe steel strip and the second steel pipe steel strip are arranged in a staggered manner; or the coiling direction of the first steel pipe steel strip is opposite to the coiling direction of the second steel pipe steel strip. Such steel pipe has bearing capacity reinforce, durable's advantage.
Description
Technical Field
The utility model relates to the technical field of municipal engineering materials, in particular to a steel pipe.
Background
The steel pipe is widely applied to the transportation of natural gas, urban water, heating power pipe networks and water supply and drainage, and generally has a larger pipe diameter.
In the prior art, the steel pipe used is a layer, and the steel pipe is generally formed by winding a strip-shaped steel belt, and the side parts of the adjacent steel belts are welded and connected.
Thus, the formed steel pipe is single-layered, and the steel pipe has the defect of poor bearing capacity, thereby affecting the durability of the steel pipe and failing to meet the requirements of installation.
Disclosure of Invention
The utility model aims to overcome the defects and provide a durable steel pipe, namely a composite layer steel pipe, with strong bearing capacity.
The technical scheme of the utility model is realized as follows: a composite layer steel pipe comprises at least two steel pipes, namely a first steel pipe and a second steel pipe, wherein the first steel pipe and the second steel pipe are formed by coiling strip-shaped steel belts, the side parts of the adjacent steel belts are welded and connected, and the welded parts form a welding area; the outer diameter of the second steel pipe is smaller than the inner diameter of the first steel pipe, the second steel pipe is arranged in the first steel pipe, and the inner part of the first steel pipe and the periphery of the second steel pipe are connected in a bonding mode through heat insulation materials or waterproof coatings.
Further, the winding direction of the first steel pipe strip and the winding direction of the second steel pipe strip are the same, and the welding areas of the first steel pipe strip and the welding areas of the second steel pipe strip are staggered.
Further, the winding direction of the first steel pipe steel strip and the winding direction of the second steel pipe steel strip are opposite.
Furthermore, a third steel pipe is also clamped between the first steel pipe and the second steel pipe.
Furthermore, a plastic pipe is arranged in the second steel pipe, and the second steel pipe and the plastic pipe are connected in an adhesion mode.
Furthermore, a layer of heat-insulating layer is arranged outside the first steel pipe.
Furthermore, the inside and the outside of the welding area are coated with an anti-corrosion material layer.
Furthermore, a zinc coating is arranged outside the first steel pipe and the second steel pipe.
The utility model has the beneficial effects that: such steel pipe has bearing capacity reinforce, durable's advantage.
Drawings
Fig. 1 is a side view of one aspect of the present invention.
Fig. 2 is a schematic side view of another aspect of the present invention.
Fig. 3 is a schematic view of the structure in the direction a-a in fig. 1 and 2.
Fig. 4 is an enlarged view of a portion B in fig. 3.
Wherein: 1. the steel pipe comprises a first steel pipe 2, a second steel pipe 3, a welding zone 4, a heat insulating material or waterproof coating 5, a plastic pipe 6, a heat insulating layer 7, an anticorrosive material layer 8, a zinc coating 9 and a third steel pipe.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, a composite layer steel pipe comprises at least two steel pipes, namely a first steel pipe 1 and a second steel pipe 2, wherein the first steel pipe and the second steel pipe are formed by coiling strip-shaped steel strips, the side parts of the adjacent steel strips are welded and connected, and the welded part forms a welding area 3; the outer diameter of the second steel pipe is smaller than the inner diameter of the first steel pipe, the second steel pipe is arranged in the first steel pipe, and the inner part of the first steel pipe and the periphery of the second steel pipe are connected by bonding through a heat insulating material or a waterproof coating 4.
The double-layer steel pipe is arranged, so that the bearing capacity is stronger, and the purpose of the utility model can be realized.
Further, the winding direction of the first steel pipe strip and the winding direction of the second steel pipe strip are the same, and the welding areas of the first steel pipe strip and the welding areas of the second steel pipe strip are staggered.
Further, as shown in fig. 2, the winding direction of the first steel pipe steel strip and the winding direction of the second steel pipe steel strip are opposite.
Further, as shown in fig. 1 and 2, a third steel pipe 9 is interposed between the first steel pipe and the second steel pipe.
Through the arrangement, higher bearing strength can be achieved.
Furthermore, a plastic pipe 5 is arranged in the second steel pipe, and the second steel pipe and the plastic pipe are connected in an adhesion mode.
The utility model has better corrosion prevention effect inside.
Furthermore, a layer of insulating layer 6 is arranged outside the first steel pipe.
The utility model has better heat preservation effect.
Further, as shown in fig. 4, the inside and outside of the welding zone are coated with a layer 7 of corrosion preventing material.
The welding area has better anti-corrosion effect.
Furthermore, a zinc coating layer 8 is arranged outside the first steel pipe and the second steel pipe.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the utility model in any way, and any person skilled in the art can make many changes or modifications to the equivalent embodiments without departing from the scope of the present invention.
Claims (6)
1. A composite layer steel pipe comprises at least two steel pipes, namely a first steel pipe and a second steel pipe, wherein the first steel pipe and the second steel pipe are formed by coiling strip-shaped steel belts, the side parts of the adjacent steel belts are welded and connected, and the welded parts form a welding area; the outer diameter of the second steel pipe is smaller than the inner diameter of the first steel pipe, the second steel pipe is arranged in the first steel pipe, and the inner part of the first steel pipe and the periphery of the second steel pipe are connected by bonding through a heat insulating material or a waterproof coating; the method is characterized in that: and the inside and the outside of the welding area are also coated with an anticorrosive material layer.
2. The composite layered steel pipe as set forth in claim 1, wherein: the coiling direction of the first steel pipe steel strip is the same as that of the second steel pipe steel strip, and the welding areas of the first steel pipe steel strip and the second steel pipe steel strip are arranged in a staggered mode.
3. The composite layered steel pipe as set forth in claim 1, wherein: the coiling direction of the first steel pipe steel strip is opposite to that of the second steel pipe steel strip.
4. The composite layered steel pipe as set forth in claim 1, 2 or 3, wherein: and a third steel pipe is also clamped between the first steel pipe and the second steel pipe.
5. The composite layered steel pipe as set forth in claim 4, wherein: and a plastic pipe is arranged in the second steel pipe, and the second steel pipe is connected with the plastic pipe in a bonding manner.
6. The composite layered steel pipe as set forth in claim 1, 2 or 3, wherein: and a heat-insulating layer is arranged outside the first steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220393595.1U CN216896189U (en) | 2022-02-25 | 2022-02-25 | Composite layer steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220393595.1U CN216896189U (en) | 2022-02-25 | 2022-02-25 | Composite layer steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216896189U true CN216896189U (en) | 2022-07-05 |
Family
ID=82187496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220393595.1U Active CN216896189U (en) | 2022-02-25 | 2022-02-25 | Composite layer steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216896189U (en) |
-
2022
- 2022-02-25 CN CN202220393595.1U patent/CN216896189U/en active Active
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