CN203322515U - Straight-slit compound steel pipe for conveying acid media - Google Patents
Straight-slit compound steel pipe for conveying acid media Download PDFInfo
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- CN203322515U CN203322515U CN2013206339903U CN201320633990U CN203322515U CN 203322515 U CN203322515 U CN 203322515U CN 2013206339903 U CN2013206339903 U CN 2013206339903U CN 201320633990 U CN201320633990 U CN 201320633990U CN 203322515 U CN203322515 U CN 203322515U
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Abstract
The utility model discloses a straight-slit compound steel pipe for conveying acid media. The straight-slit compound steel pipe for conveying the acid media comprises a steel pipe body, wherein the steel pipe body comprises an inner wall layer and an outer wall layer, a weld joint which penetrates through the steel pipe body and extends in the longitudinal direction of the steel pipe body is arranged on the steel pipe body, the inner wall layer and the outer wall layer are integrally formed, the inner wall layer is made of nickel base alloy, and the outer wall layer is made of pipeline steel. The straight-slit compound steel pipe for conveying the acid media has the advantages of being low in maintenance cost, long in service life and low in manufacturing cost.
Description
Technical field
The utility model relates to a kind of composite steel tube of the vertical masonry joint for delivery of acid medium.
Background technique
Because acidic fluid medium (as nitric acid, sulfuric acid, hydrochloric acid etc.) has corrosivity, people, environment are had to very big danger, therefore, for the corrosion resistance of the steel pipe for delivery of the acidic fluid medium, very high requirement is arranged.Because acid medium is much slow during than room temperature to the corrosion reaction of steel tube surface under low temperature environment, therefore, be to reduce corrosivity, the working environment that steel pipe often can be in low temperature.
Thus, for delivery of the steel pipe of acidic fluid medium, must there is good corrosion resistance, and good low-temperature flexibility.
Add the common steel tube (as the GB9711L415 material) of anticorrosive coat in the general employing of existing this type of steel pipe, or adopt pure Stainless Steel Tube (as the GB/T423706Cr19Ni10 material).
The steel pipe that adds anticorrosive coat in employing, because it is to add anticorrosive coat on the basis of former steel pipe, therefore, anticorrosive coat and the former steel pipe bad phenomenon of fitting in can existing, the situations such as anticorrosive coat sclerosis cracking, disengaging easily occurred between the spreadable life, thereby cause, maintenance cost is high, working life is short, also easily causes leakage accident.Adopt pure Stainless Steel Tube, cost is too high.
The model utility content
The technical problems to be solved in the utility model is the defect that interior anticorrosive coat easily ftractures, comes off and the steel pipe manufacture cost is high of the steel pipe for delivery of the acidic fluid medium in order to overcome prior art, and a kind of composite steel tube of the vertical masonry joint for delivery of acid medium is provided.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of composite steel tube of the vertical masonry joint for delivery of acid medium, it comprises a steel pipe body, described steel pipe body comprises an inner wall layer and an outer wall layer, described steel pipe body is provided with one and runs through described steel pipe body and along the weld seam of described steel pipe body longitudinal extension, its characteristics are, described inner wall layer and described outer wall layer are one-body molded, and the material of described inner wall layer is nickel-base alloy, and the material of described outer wall layer is pipe line steel.
Preferably, the material of described inner wall layer is the LC2242 nickel-base alloy, and the material of described outer wall layer is the X60 pipe line steel.
Preferably, the thickness of described inner wall layer is 2.5mm～3.5mm, and the thickness of described outer wall layer is 7.5mm～20.5mm.
Positive progressive effect of the present utility model is: steel pipe of the present utility model, and its inner wall layer surface is nickel-base alloy, and corrosion resistance is good, and low-temperature flexibility is good, and outer wall layer is pipe line steel, low-temperature flexibility is good.Because inner wall layer and outer wall layer adopt one-body molded, the tube wall that is steel pipe is Clad Steel Plate, does not have inner wall layer and the outer wall layer bad situation of fitting, and the phenomenons such as inner wall layer sclerosis cracking, disengaging can not occur, thereby reduced maintenance cost, improved working life.The utility model steel pipe can reach more than 50 years working life.With pure Stainless Steel Tube, compare, the manufacture cost of the utility model steel pipe reduces greatly.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below lift a preferred embodiment, and carry out by reference to the accompanying drawings the clearer the utility model that intactly illustrates.
As shown in Figure 1, a kind of composite steel tube of the vertical masonry joint for delivery of acid medium, it comprises a steel pipe body, described steel pipe body comprises inner wall layer 2 and outer wall layer 1, described steel pipe body is provided with one and runs through described steel pipe body and along the weld seam of described steel pipe body longitudinal extension, described inner wall layer and described outer wall layer are one-body molded, and the material of described inner wall layer is nickel-base alloy, and the material of described outer wall layer is pipe line steel.
Steel pipe of the present utility model, its inner wall layer surface is nickel-base alloy, and corrosion resistance is good, and low-temperature flexibility is good, and outer wall layer is pipe line steel, low-temperature flexibility is good.Because inner wall layer and outer wall layer adopt one-body molded, the tube wall that is steel pipe is Clad Steel Plate, there do not is inner wall layer and the outer wall layer bad situation of fitting, the phenomenons such as inner wall layer sclerosis cracking, disengaging can not occur, thereby reduced maintenance cost, improved working life.The utility model steel pipe can reach more than 50 years working life.With pure Stainless Steel Tube, compare, the manufacture cost of the utility model steel pipe reduces greatly.
The material of described inner wall layer can adopt the LC2242 nickel-base alloy, and the material of described outer wall layer can adopt the X60 pipe line steel, and the tube wall of steel pipe, adopt X60 pipe line steel and the integrated Clad Steel Plate of LC2242 nickel-base alloy.This Clad Steel Plate can form nickel-base alloy steel plate and Pipeline Steel Plate rolling by hot rolling technology, can also be compound by blast, hydraulic pressure is compound etc.This Clad Steel Plate, by milling limit, edges of boards pre-bending, brake forming, is processed into to steel tubular.Then by welding, Clad Steel Plate is connected.As shown in Figure 1, welded structure comprises pre-weld seam 3, outside weld 4 and inside weld 5.For the location joint close, need carry out prewelding, thereby form pre-weld seam 3.Its welding method can adopt the GMAW(gas metal-arc welding), welding wire can adopt H08C welding wire (upper Hypon a surname welding consumables).Carry out outside weldings and interior welds on the basis of pre-weld seam, form outside weld 4 and inside weld 5.The welding method of outside weld can adopt SAW(submerged arc welding), welding wire can adopt H08C welding wire (upper Hypon a surname welding consumables).The welding method of inside weld can adopt the GMAW(gas metal-arc welding), welding wire can adopt the ERNiCrFe-3 nickel-based welding wire.After having welded, pre-weld seam is fused by submerged arc weld fully.After weld inspection, then through eliminating stress, sizing, aligning, the hydrostatic test, the outward appearance technique process such as inspection eventually manufacture steel pipe.
The thickness of described inner wall layer can adopt 2.5mm～3.5mm, and the thickness of described outer wall layer can adopt 7.5mm～20.5mm.Such pipe thickness, both can meet corrosion resistant requirement, can meet again the requirement of strength to tube wall of bringing because of fed sheet of a media.By same service life, designed, the pipe thickness of the utility model steel pipe is compared with the pipe thickness of existing steel pipe, can greatly reduce.
Although more than described embodiment of the present utility model, it will be understood by those of skill in the art that this only illustrates, protection domain of the present utility model is limited by appended claims.Those skilled in the art, under the prerequisite that does not deviate from principle of the present utility model and essence, can make various changes or modifications to these mode of executions, but these changes and modification all fall into protection domain of the present utility model.
Claims (1)
1. the composite steel tube of the vertical masonry joint for delivery of acid medium, it comprises a steel pipe body, described steel pipe body comprises an inner wall layer and an outer wall layer, described steel pipe body is provided with one and runs through described steel pipe body and along the weld seam of described steel pipe body longitudinal extension, it is characterized in that, described inner wall layer and described outer wall layer are one-body molded, and the material of described inner wall layer is the LC2242 nickel-base alloy, and the material of described outer wall layer is the X60 pipe line steel.
2, the composite steel tube of the vertical masonry joint for delivery of acid medium as claimed in claim 1, is characterized in that, the thickness of described inner wall layer is 2.5mm ~ 3.5mm, and the thickness of described outer wall layer is 7.5mm ~ 20.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013206339903U CN203322515U (en) | 2013-10-14 | 2013-10-14 | Straight-slit compound steel pipe for conveying acid media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013206339903U CN203322515U (en) | 2013-10-14 | 2013-10-14 | Straight-slit compound steel pipe for conveying acid media |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203322515U true CN203322515U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013206339903U Expired - Fee Related CN203322515U (en) | 2013-10-14 | 2013-10-14 | Straight-slit compound steel pipe for conveying acid media |
Country Status (1)
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| CN (1) | CN203322515U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706928A (en) * | 2013-12-25 | 2014-04-09 | 江苏玉龙钢管股份有限公司 | Longitudinal submerged arc welding method of corrosion resistance metallurgical composite bimetal steel tube |
| CN103978317A (en) * | 2014-04-25 | 2014-08-13 | 张红霞 | Compounded welded tube as well as manufacturing method and application thereof |
| CN107775280A (en) * | 2016-08-29 | 2018-03-09 | 中国石油天然气集团公司 | A kind of manufacture method of N08825 nickel-base alloys composite-curve |
-
2013
- 2013-10-14 CN CN2013206339903U patent/CN203322515U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706928A (en) * | 2013-12-25 | 2014-04-09 | 江苏玉龙钢管股份有限公司 | Longitudinal submerged arc welding method of corrosion resistance metallurgical composite bimetal steel tube |
| CN103978317A (en) * | 2014-04-25 | 2014-08-13 | 张红霞 | Compounded welded tube as well as manufacturing method and application thereof |
| CN107775280A (en) * | 2016-08-29 | 2018-03-09 | 中国石油天然气集团公司 | A kind of manufacture method of N08825 nickel-base alloys composite-curve |
| CN107775280B (en) * | 2016-08-29 | 2019-06-11 | 中国石油天然气集团公司 | A kind of manufacturing method of N08825 nickel-base alloy composite-curve |
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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: 20131204 Termination date: 20161014 |