CN2839782Y - Inter-end coating corrosion-resisting alloy joint steel pipe - Google Patents
Inter-end coating corrosion-resisting alloy joint steel pipe Download PDFInfo
- Publication number
- CN2839782Y CN2839782Y CN 200520079798 CN200520079798U CN2839782Y CN 2839782 Y CN2839782 Y CN 2839782Y CN 200520079798 CN200520079798 CN 200520079798 CN 200520079798 U CN200520079798 U CN 200520079798U CN 2839782 Y CN2839782 Y CN 2839782Y
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- parent tube
- internal diameter
- resisting alloy
- tube
- 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 - Lifetime
Links
Images
Landscapes
- Revetment (AREA)
Abstract
The utility model discloses and cover corrosion resistant alloy joint steel pipe in a kind of end, comprise the parent tube steel pipe, processing enlarges internal diameter in the inwall certain-length of described parent tube steel pipe two ends, cover the corrosion resisting alloy layer in the inwall that the parent tube pipe diameter enlarges, corrosion resisting alloy layer internal diameter and the former internal diameter of parent tube steel pipe are isometrical, corrosion resisting alloy layer end face is concordant with parent tube steel pipe end face, and sudden change place of parent tube pipe diameter is provided with knuckle, and parent tube steel pipe two ends are provided with the finished edge that promising welding is reserved.The utility model has solved welding, the conversion welding of composite steel tube and has kept the etch-proof integrity of postwelding, has reduced the manufacture cost and the installation cost of composite steel tube, and applying of composite steel tube become a reality.
Description
Technical field
The utility model relates to a kind of composite steel tube, particularly relates in a kind of end of being convenient to composite steel tube welding covering corrosion resistant alloy joint steel pipe.
Background technique
The installation of conveying steel pipe generally adopts butt joint to be welded to connect.When the frp lining butt welding of steel tube connect, the matrix resin of high temperature meeting scaling loss glass fibre reinforced plastics made the resin charing, and the steel pipe under it comes out, and forms the big negative electrode of primary anode, accelerated corrosion.The corrosion resisting alloy liner or in cover steel pipe welding belong to dissimilar metal welding, welding difficulty when the multiple layer of corrosion resisting alloy wall thickness is thin, pierce through multiple layer easily, steel pipe is appeared, form the big negative electrode of primary anode, accelerated corrosion, and cause that easily near the multiple layer distortion the weld seam peel off, thus frp lining steel pipe, corrosion resisting alloy liner or in cover steel pipe welded joint be one and seem the simple problem of difficulty actually.
In order to solve this difficult problem, existing stainless steel inner lining steel pipe adopts the welding of stainless steel crossover sub, and it is rare and cost an arm and a leg to make the Stainless Steel Tube source of this joint, and intergranular corrosion and stress corrosion easily take place welded joint, and fracture mode is complete fragility.Any other macroscopical disease do not occur in the slow stretching process of crackle, in case reach the fracture fast immediately of hit cross section, often cause catastrophic failure, it is very harmful.For the frp lining steel pipe, so far the conversion welded joint that does not also have to be suitable for occurs, a kind of joint that is Protected from Heat is arranged, the problem of existence, the one, welded and installed can't realize the structure that designs, the 2nd, composite steel tube is welding not, butt joint ring and spill seal ring can not seal, and fed sheet of a media can arrive the joint annular space that is Protected from Heat, and does not have antisepsis, the joint that is Protected from Heat becomes weak link in whole pipeline, broken the integrity of pipeline.
The model utility content
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, provides a kind of and makes that installation cost is low, covers corrosion resistant alloy joint steel pipe in the end that keeps the etch-proof integrity of postwelding joint.
For achieving the above object, the technological scheme that the utility model adopted is: cover corrosion resistant alloy joint steel pipe in a kind of end, comprise parent tube steel pipe 1, it is characterized in that: processing enlarges internal diameter in the described parent tube steel pipe 1 two ends inwall certain-length, cover corrosion resisting alloy layer 2 in the inwall that parent tube steel pipe 1 internal diameter enlarges, corrosion resisting alloy layer 2 internal diameter and parent tube steel pipe 1 former internal diameter are isometrical, corrosion resisting alloy layer 2 end face are concordant with parent tube steel pipe 1 end face, 1 internal diameter sudden change place of parent tube steel pipe is provided with knuckle 4, and parent tube steel pipe 1 two ends are provided with the finished edge 3 that promising welding is reserved.
The utility model compared with prior art has the following advantages: the utility model has solved welding, the conversion welding of composite steel tube and has kept the etch-proof integrity of postwelding, reduced the manufacture cost and the installation cost of composite steel tube, applying of composite steel tube become a reality.
Description of drawings
Fig. 1 is a sectional drawing of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
As shown in Figure 1, the utility model comprises parent tube steel pipe 1, processing enlarges internal diameter in the described parent tube steel pipe 1 two ends inwall certain-length, cover corrosion resisting alloy layer 2 in the inwall that parent tube steel pipe 1 internal diameter enlarges, corrosion resisting alloy layer 2 internal diameter and parent tube steel pipe 1 former internal diameter are isometrical, corrosion resisting alloy layer 2 end face are concordant with parent tube steel pipe 1 end face, and 1 internal diameter sudden change place of parent tube steel pipe is provided with knuckle 4, and parent tube steel pipe 1 two ends are provided with the finished edge 3 that promising welding is reserved.
Claims (1)
1, covers corrosion resistant alloy joint steel pipe in a kind of end, comprise parent tube steel pipe (1), it is characterized in that: processing enlarges internal diameter in the inwall certain-length of described parent tube steel pipe (1) two ends, cover corrosion resisting alloy layer (2) in the inwall that parent tube steel pipe (1) internal diameter enlarges, corrosion resisting alloy layer (2) internal diameter and the former internal diameter of parent tube steel pipe (1) are isometrical, corrosion resisting alloy layer (2) end face is concordant with parent tube steel pipe (1) end face, parent tube steel pipe (1) internal diameter sudden change place is provided with knuckle (4), and parent tube steel pipe (1) two ends are provided with the finished edge (3) that promising welding is reserved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079798 CN2839782Y (en) | 2005-12-01 | 2005-12-01 | Inter-end coating corrosion-resisting alloy joint steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079798 CN2839782Y (en) | 2005-12-01 | 2005-12-01 | Inter-end coating corrosion-resisting alloy joint steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2839782Y true CN2839782Y (en) | 2006-11-22 |
Family
ID=37427764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520079798 Expired - Lifetime CN2839782Y (en) | 2005-12-01 | 2005-12-01 | Inter-end coating corrosion-resisting alloy joint steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2839782Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008988A (en) * | 2013-01-04 | 2013-04-03 | 哈尔滨工业大学 | Method for welding anticorrosion steel pipeline with no internal repaired mouth |
| CN105626985A (en) * | 2015-05-03 | 2016-06-01 | 延安中海石油工程技术开发有限公司 | Stainless steel heat avoiding connector and method for connecting anti-corrosion steel pipes by using stainless steel heat avoiding connector |
| CN105983755A (en) * | 2015-01-28 | 2016-10-05 | 胜利油田金岛工程安装有限责任公司 | Surfacing welding method for enclosed connection of long-distance pipeline without mending |
-
2005
- 2005-12-01 CN CN 200520079798 patent/CN2839782Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008988A (en) * | 2013-01-04 | 2013-04-03 | 哈尔滨工业大学 | Method for welding anticorrosion steel pipeline with no internal repaired mouth |
| CN103008988B (en) * | 2013-01-04 | 2016-03-23 | 哈尔滨工业大学 | The method of internal joint patch weldering exempted from by a kind of anticorrosive steel pipeline |
| CN105983755A (en) * | 2015-01-28 | 2016-10-05 | 胜利油田金岛工程安装有限责任公司 | Surfacing welding method for enclosed connection of long-distance pipeline without mending |
| CN105626985A (en) * | 2015-05-03 | 2016-06-01 | 延安中海石油工程技术开发有限公司 | Stainless steel heat avoiding connector and method for connecting anti-corrosion steel pipes by using stainless steel heat avoiding connector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2839782Y (en) | Inter-end coating corrosion-resisting alloy joint steel pipe | |
| CN2851779Y (en) | Joint steel pipe with integrated anti-corrosion alloy lining | |
| CN2839783Y (en) | Equal diameter double-metal welding joint with base pipe steel pipe | |
| CN2773443Y (en) | Internally fixed node | |
| CN102011864A (en) | Rigid-flexible composite sealing ring | |
| CN204300573U (en) | A kind of bimetallic composite reducing crossover sub | |
| CN201545519U (en) | Plug-type sealed expansion joint of coal feeder | |
| CN201960764U (en) | Anti-corrosion carbon steel high-temperature alloy composite tube | |
| CN207213452U (en) | A kind of bridge piece | |
| CN112361115A (en) | Special-shaped sleeve for repairing fillet weld defect of B-shaped sleeve | |
| CN206377680U (en) | A kind of gas approach material is the desulfurizing tower of carbon steel liner Hastelloy | |
| CN102141179B (en) | Electric hot-melt fastening type pipe fitting | |
| CN220668634U (en) | Corrosion-resistant and wear-resistant composite pipeline | |
| CN219994371U (en) | Eduction tube structure of tower thick wall stainless steel composite sheet pressure vessel bottom | |
| CN201909119U (en) | Glass fiber reinforced plastic inner lining stainless steel composite pipe with thick wall stainless steel joints | |
| CN205745787U (en) | A kind of water pump union joint | |
| CN2355195Y (en) | Composite pipes | |
| CN205331651U (en) | Compound slot pipe fitting of inside lining stainless steel | |
| CN221208100U (en) | Composite bearing plate | |
| CN217224178U (en) | Welding groove structure for strip surfacing welding and composite steel pipe for strip surfacing welding | |
| CN211175777U (en) | Integral forming connection structure for pipe end of gas transfer pipe | |
| CN201731217U (en) | Hardness/softness composite sealing ring | |
| CN209385820U (en) | A kind of composite bimetal pipe with bonding interface | |
| CN206439518U (en) | A kind of corrosion-resistant composite pipe fitting | |
| CN204099592U (en) | Reinforced graphite seal ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI HILONG ANTI-CORROSION TECHNOLOGY ENGINEER Free format text: FORMER OWNER: GUO HENGGANG Effective date: 20130614 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710065 XI AN, SHAANXI PROVINCE TO: 201900 BAOSHAN, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130614 Address after: 201900 No. 1825 East Luo Road, Baoshan Industrial Park, Shanghai Patentee after: Shanghai Hilong Anti-Corrosion Technology Engineering Co., Ltd. Address before: 710065, No. two, No. 32, Xi'an, Shaanxi Patentee before: Guo Henggang |
|
| CX01 | Expiry of patent term |
Granted publication date: 20061122 |
|
| EXPY | Termination of patent right or utility model |