CN203671053U - Stainless steel composite pipe - Google Patents
Stainless steel composite pipe Download PDFInfo
- Publication number
- CN203671053U CN203671053U CN201320816073.9U CN201320816073U CN203671053U CN 203671053 U CN203671053 U CN 203671053U CN 201320816073 U CN201320816073 U CN 201320816073U CN 203671053 U CN203671053 U CN 203671053U
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- China
- Prior art keywords
- stainless steel
- composite pipe
- steel composite
- pipe body
- wall
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- Expired - Fee Related
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Abstract
A stainless steel composite pipe comprises a stainless steel composite pipe body. The outer wall of the stainless steel composite pipe body is coated with an elastic non-metallic protection layer. The inner wall of the stainless steel composite pipe body is a stainless steel layer. The outer wall of the stainless steel composite pipe body is a carbon steel layer. The stainless steel composite pipe body is formed by welding stainless steel composite plate bands in a spirally curled mode. An inner stainless steel welding seam is arranged on the inner wall of the stainless steel composite pipe body along a spiral juncture. An outer carbon steel welding seam is arranged on the outer wall of the stainless steel composite pipe body along the spiral juncture. The stainless steel composite plate bands are spirally in lap joint, and the lap joint width is 5mm-20mm. The stainless steel composite pipe is resistant to corrosion, long in service life, high in pressure-bearing capacity, low in manufacturing cost and suitable for being used in a gas-bearing mine which has an explosion hazard.
Description
Technical field
The utility model relates to a kind of metal tube, and especially a kind of inside and outside layer has the metal composite pipe of unlike material.
Background technique
Mine spiral or vertical masonry joint carbon steel tubes of adopting in the time carrying out gas extraction and water-pumping/draining operation in prior art more; owing to being conventionally mixed with corrosive gas or liquid in methane gas or down-hole infiltration; therefore, easily the inwall of carbon steel piping is caused to corrosion, shorten the working life of pipeline.In addition, due to underground work narrow space, the metallic conduit that is arranged in down-hole is subject to clashing into easy generation spark, and this is breakneck containing in fiery mine, bring serious hidden danger to safety in production, carbon steel tube outer wall is directly exposed to corrosion also easily occurs in humid air.
Model utility content
The technical problem that model utility will solve: a kind of stainless steel composite pipe is provided, and this stainless steel composite pipe is corrosion-resistant, long service life, bearing capacity is strong, low cost of manufacture, and be applicable to there is using containing fiery mine is interior of explosion risk.
The technological scheme that technical solution problem is taked: a kind of stainless steel composite pipe, comprise stainless steel composite pipe body, be coated with elasticity on-metallic protective coating at the external wall of stainless steel composite pipe, the inwall of described stainless steel composite pipe body is stainless steel lining, outer wall is carbon steel layer.
As improvement of the present utility model: described stainless steel composite pipe body is made up of the welding of stainless steel clad sheet helix-coil, at stainless steel composite pipe body inwall along the helically-seamed stainless steel inside weld that is provided with, at the external wall of stainless steel composite pipe along the helically-seamed carbon steel outside weld that is provided with.
As further improvement of the utility model: stainless steel clad sheet spiral overlap joint, lap width 5-20mm.
Further improve again as of the present utility model: stainless steel composite pipe body inwall stainless steel lining thickness is 0.1-1mm, and outer wall carbon steel layer thickness is 1.8-4mm.
Improve as another kind of the present utility model: described elastic protective layer is polyurethane layer or modified polyurethane layer.
As optimum scheme of the present utility model: the thickness of polyurethane layer or modified polyurethane layer is 0.5-10mm.
Beneficial effect: stainless steel composite pipe of the present utility model, owing to having adopted described stainless steel composite pipe to comprise stainless steel composite pipe body, be coated with elasticity on-metallic protective coating at the external wall of stainless steel composite pipe, the inwall of described stainless steel composite pipe body is stainless steel lining, outer wall is the technological scheme of carbon steel layer, make the stainless steel composite pipe of the present utility model can be for the conveying of corrosive gas or liquid, long service life, compared with the low cost of manufacture of all steel pipeline, compressive resistance ability is strong, and, the elasticity on-metallic protective coating that compound tube wall applies can effectively be avoided metallic conduit outer wall and other metal to clash into and produce spark, bring potential safety hazard, make stainless steel composite pipe of the present utility model to have in the environment of explosion risk and to use for fiery mine etc., made by the welding of stainless steel clad sheet helix-coil owing to having adopted described stainless steel composite pipe body, at stainless steel composite pipe body inwall along the helically-seamed stainless steel inside weld that is provided with, along the helically-seamed technical characteristics that is provided with carbon steel outside weld, make the bearing strength of stainless steel composite pipe of the present utility model reach the more than 1.5 times of straight-seam pipes of identical material at the external wall of stainless steel composite pipe, owing to having adopted stainless steel clad sheet spiral overlap joint, the technical characteristics of lap width 5-20mm, can improve the ring stiffness of pipeline, reduce the wall thickness of pipeline, thereby alleviate pipeline weight and reduce pipeline manufacture cost, making the bearing strength of stainless steel composite pipe of the present utility model reach the more than 1.2-1.25 times of spiral butt-welded tube of identical material, owing to reasonably defining the thickness of stainless steel composite pipe body inwall stainless steel lining and the thickness of outer wall carbon steel layer, make intensity, corrosion resistance, working life and the manufacture cost of stainless steel composite pipe of the present utility model reach perfect unity, be the technical characteristics of polyurethane layer or modified polyurethane layer owing to having adopted described elasticity on-metallic protective coating, not only avoid pipeline outer wall to clash into and produced spark, and the carbon steel layer that has prevented pipe outer wall contacts with corrosive gas or liquid and produce corrosion, further extend working life of stainless steel composite pipe of the present utility model.
Brief description of the drawings
Below in conjunction with embodiment, stainless steel composite pipe of the present utility model is described in further detail.
Fig. 1 is the vertical section structure schematic diagram of stainless steel composite pipe of the present utility model.
Embodiment
As shown in Figure 1, stainless steel composite pipe of the present utility model, comprise stainless steel composite pipe body 1, be coated with elastic protective layer 2 at the external wall of stainless steel composite pipe, described elasticity on-metallic protective coating is polyurethane layer or modified polyurethane layer, also can adopt rubber, plastics etc. have certain flexible on-metallic protective coating, the thickness of polyurethane layer or modified polyurethane layer is 0.5-10mm, described stainless steel composite pipe body is made up of the welding of stainless steel clad sheet helix-coil, stainless steel clad sheet spiral overlap joint, lap width L is 5-20mm, at stainless steel composite pipe body inwall along the helically-seamed stainless steel inside weld 3 that is provided with, at the external wall of stainless steel composite pipe along the helically-seamed carbon steel outside weld 4 that is provided with, the inwall of stainless steel composite pipe body is stainless steel lining 12, outer wall is carbon steel layer 11, stainless steel composite pipe body inwall stainless steel lining thickness is 0.1-1mm, outer wall carbon steel layer thickness is 1.8-4mm.
Claims (4)
1. a stainless steel composite pipe; comprise stainless steel composite pipe body; it is characterized in that: be coated with elasticity on-metallic protective coating at the external wall of stainless steel composite pipe; the inwall of described stainless steel composite pipe body is stainless steel lining; outer wall is carbon steel layer; described elastic protective layer is polyurethane layer or modified polyurethane layer, and the thickness of polyurethane layer or modified polyurethane layer is 0.5-10mm.
2. stainless steel composite pipe according to claim 1, it is characterized in that: described stainless steel composite pipe body is made up of the welding of stainless steel clad sheet helix-coil, at stainless steel composite pipe body inwall along the helically-seamed stainless steel inside weld that is provided with, at the external wall of stainless steel composite pipe along the helically-seamed carbon steel outside weld that is provided with.
3. stainless steel composite pipe according to claim 2, is characterized in that: stainless steel clad sheet spiral overlap joint, lap width 5-20mm.
4. according to the stainless steel composite pipe described in claims 1 to 3 any one, it is characterized in that: stainless steel composite pipe body inwall stainless steel lining thickness is 0.1-1mm, and outer wall carbon steel layer thickness is 1.8-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320816073.9U CN203671053U (en) | 2013-12-13 | 2013-12-13 | Stainless steel composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320816073.9U CN203671053U (en) | 2013-12-13 | 2013-12-13 | Stainless steel composite pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203671053U true CN203671053U (en) | 2014-06-25 |
Family
ID=50967346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320816073.9U Expired - Fee Related CN203671053U (en) | 2013-12-13 | 2013-12-13 | Stainless steel composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203671053U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019289A (en) * | 2014-06-23 | 2014-09-03 | 谢志树 | Composite stainless steel pipe and manufacturing method for same |
| CN107206405A (en) * | 2015-01-21 | 2017-09-26 | 杜尔系统股份公司 | Clock cup or deflecting air ring including barrier coat |
-
2013
- 2013-12-13 CN CN201320816073.9U patent/CN203671053U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019289A (en) * | 2014-06-23 | 2014-09-03 | 谢志树 | Composite stainless steel pipe and manufacturing method for same |
| CN107206405A (en) * | 2015-01-21 | 2017-09-26 | 杜尔系统股份公司 | Clock cup or deflecting air ring including barrier coat |
| US10773265B2 (en) | 2015-01-21 | 2020-09-15 | Dürr Systems Ag | Bell cup or atomizer ring comprising an insulating coating |
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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 |
Granted publication date: 20140625 Termination date: 20181213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |