CN205618961U - Longitudinal welded pipe - Google Patents
Longitudinal welded pipe Download PDFInfo
- Publication number
- CN205618961U CN205618961U CN201620399563.7U CN201620399563U CN205618961U CN 205618961 U CN205618961 U CN 205618961U CN 201620399563 U CN201620399563 U CN 201620399563U CN 205618961 U CN205618961 U CN 205618961U
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- CN
- China
- Prior art keywords
- steel pipe
- pipe body
- erw
- welding
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model relates to a longitudinal welded pipe, its structure includes steel pipe body (1), and welding seam (2) are established for straight seam welding forms in steel pipe body (1) on steel pipe body (1), and (4) are located not have the welding bead to steel pipe body (1) interior side weld (2), and interior concave part (3) are located to establish in steel pipe body (1) interior side weld (2). The utility model discloses an advantage: it does not have interior welding bead to scrape the back in this longitudinal welded pipe, and the inside pipe wall is smooth for inseparabler with intraductal mould or sleeve pipe degree of adaptability, the product quality obtains further promotion. The cost is very low for accurate seamless pipe, great reduction manufacturing cost, improved enterprise economic benefit.
Description
Technical field
The utility model relates to a kind of ERW.
Background technology
ERW, the steel pipe being i.e. welded with hot rolling or cold-rolled steel sheet or steel coil strip is at welding equipment
On carry out the pipe that straight seam welding obtains.Welding bead is had, owing to welding bead can be deposited in ordinary straight seam welded tube pipe
Protruding from the situation of inside pipe wall, some tube interiors need sleeve pipe, filling mould etc., during operation
Very inconvenient, some pipes even cannot operate and use.Some product needed coordinate precision, only
The accurate seamless pipe that energy procurement price is expensive, production cost is the highest.
Summary of the invention
The utility model proposes a kind of ERW, its purpose is intended to overcome prior art to exist
Drawbacks described above, inner wall of welded pipe is smooth without welding bead, any parts can be coordinated to use, improve product
Quality.
Technical solution of the present utility model: a kind of ERW, its structure includes steel pipe body,
Steel pipe body is that straight seam welding forms, and steel pipe body sets weld seam, at steel pipe body weld joint on inner side without
Welding bead, sets inner fovea part at steel pipe body weld joint on inner side.
Preferably, the degree of depth of described inner fovea part is 1:3～1:10 with the ratio of steel pipe body thickness.
Preferably, the degree of depth of described inner fovea part is 1:4～1:6 with the ratio of steel pipe body thickness.
Preferably, described inner fovea part is circular arc.
Preferably, impulse-free robustness inside described steel pipe body.
Advantage of the present utility model: without interior welding bead after scraping in this ERW, inside pipe wall is smooth, makes
Must be tightr with pipe inner mold or sleeve pipe fitness, product quality is promoted further.Cost
For accurate seamless pipe the lowest, production cost is greatly reduced, improves business economic
Benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model ERW.
Fig. 2 is the structural representation of ordinary straight seam welded tube.
In figure 1 is steel pipe body, 2 is weld seam, 3 is inner fovea part, 4 is welding bead.
Detailed description of the invention
Below in conjunction with embodiment and detailed description of the invention, this utility model made further details of theory
Bright.
As shown in Figure 1, 2, a kind of ERW, its structure includes steel pipe body 1, steel pipe body
1 forms for straight seam welding, and steel pipe body 1 sets weld seam 2, at steel pipe body 1 weld joint on inner side 2 without
Welding bead 4, sets inner fovea part 3 at steel pipe body 1 weld joint on inner side 2.
The degree of depth of described inner fovea part 3 is 1:3～1:10 with the ratio of steel pipe body 1 thickness.
The degree of depth of described inner fovea part 3 is 1:4～1:6 with the ratio of steel pipe body 1 thickness.
Described inner fovea part 3 is in circular arc.
Impulse-free robustness inside described steel pipe body 1.
Existing ERW as shown in Figure 2, sets welding bead 4 at steel pipe body 1 inside weld 2, logical
Burr and welding bead 4 strike off in Guo Neigua mechanism, smooth in steel pipe body 1, form recess at former welding bead 4
3。
Above-described is only preferred implementation of the present utility model, it is noted that for ability
For the those of ordinary skill in territory, on the premise of creating design without departing from this utility model, also may be used
To make some deformation and improvement, these broadly fall into protection domain of the present utility model.
Claims (5)
1. an ERW, its feature includes that steel pipe body (1), steel pipe body (1) are straight
Seam welding forms, and steel pipe body (1) sets weld seam (2), steel pipe body (1) weld joint on inner side (2)
Place is without welding bead (4), and steel pipe body (1) weld joint on inner side (2) place sets inner fovea part (3).
2. a kind of ERW as claimed in claim 1, is characterized in that described inner fovea part (3)
The ratio of the degree of depth and steel pipe body (1) thickness be 1:3～1:10.
3. a kind of ERW as claimed in claim 2, is characterized in that described inner fovea part (3)
The ratio of the degree of depth and steel pipe body (1) thickness be 1:4～1:6.
4. a kind of ERW as described in claim 1 or 2 or 3, is characterized in that described interior
Recess (3) is in circular arc.
5. a kind of ERW as described in claim 1 or 2 or 3, is characterized in that described steel
Tube body (1) inner side impulse-free robustness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620399563.7U CN205618961U (en) | 2016-05-04 | 2016-05-04 | Longitudinal welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620399563.7U CN205618961U (en) | 2016-05-04 | 2016-05-04 | Longitudinal welded pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205618961U true CN205618961U (en) | 2016-10-05 |
Family
ID=57025627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620399563.7U Expired - Fee Related CN205618961U (en) | 2016-05-04 | 2016-05-04 | Longitudinal welded pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205618961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804488A (en) * | 2021-09-28 | 2021-12-17 | 澳普洛钻探工具(无锡)有限公司 | Welded pipe for geological exploration |
-
2016
- 2016-05-04 CN CN201620399563.7U patent/CN205618961U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804488A (en) * | 2021-09-28 | 2021-12-17 | 澳普洛钻探工具(无锡)有限公司 | Welded pipe for geological exploration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 Termination date: 20210504 |