CN205674484U - Corrosion resistant lining tube continuous construction equipment - Google Patents
Corrosion resistant lining tube continuous construction equipment Download PDFInfo
- Publication number
- CN205674484U CN205674484U CN201620517143.4U CN201620517143U CN205674484U CN 205674484 U CN205674484 U CN 205674484U CN 201620517143 U CN201620517143 U CN 201620517143U CN 205674484 U CN205674484 U CN 205674484U
- Authority
- CN
- China
- Prior art keywords
- internal lining
- pipe
- lining pipe
- corrosion resistant
- construction equipment
- 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
Links
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 230000007797 corrosion Effects 0.000 title claims abstract description 21
- 238000005260 corrosion Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 34
- 238000009413 insulation Methods 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 8
- 230000002421 anti-septic effect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The utility model discloses a kind of corrosion resistant lining tube continuous construction equipment, it is wound around cylinder, size reducing machine and traction machine including the internal lining pipe being arranged in order, described internal lining pipe is wound around cylinder and is used for being wound around internal lining pipe, described size reducing machine is for the internal lining pipe undergauge by coming from internal lining pipe winding cylinder, and described traction machine is for drawing the internal lining pipe after undergauge；Described size reducing machine and traction machine are separately mounted to treat the two ends of lined steel pipe, and described size reducing machine rear end and traction machine front end are respectively provided with and are introduced by internal lining pipe and draw the directive wheel treating lined steel pipe.This utility model is rational in infrastructure, can realize the construction of continuous liner, and internal lining pipe is readily transported, and constructs simple and convenient, can alleviate the labor intensity of staff.
Description
Technical field
This utility model relates to a kind of pipeline construction equipment, is specifically related to a kind of corrosion resistant lining tube continuous construction equipment.
Background technology
At present, gathering line in petroleum and petrochemical sector or to place the corrosion of underwater pipeline extremely serious, directly
Have impact on the service life of pipeline, cause the extra increase of construction cost and totle drilling cost.In order to alleviate and prevent conveyance conduit
Corrosion and damage, improves its service life, and general employing applies corrosion-inhibiting coating or liner to metal pipe internal wall.Due to existing anti-
Rotten liner is the section shape with certain size, when such corrosion-proof lining is constructed at the scene, needs the size field pair according to steel pipe
Multistage corrosion-proof lining is attached, and then draws in main pipeline by traction machine by bushing pipe, the most not only increases staff's
Labor intensity, and the connection between multistage cannot ensure sealing effectiveness, the most not only antiseptical effect in impact so that it is lose
The function of protective conduit, and easy local corrosion cause perforation time serious, thus affect the life-span of whole piece pipeline, under water
It is difficult to inspection and maintenance, causes huge economic loss.
Summary of the invention
The purpose of this utility model is aiming at the defect that prior art exists, it is provided that a kind of rational in infrastructure, can the company of realization
The construction of continuous liner, it is simple to transport, constructs simple and convenient, and the corrosion resistant lining tube of the labor intensity that can alleviate staff is executed continuously
Construction equipment.
Its technical scheme is: corrosion resistant lining tube continuous construction equipment, is wound around cylinder, undergauge including the internal lining pipe being arranged in order
Machine and traction machine, described internal lining pipe is wound around cylinder and is used for being wound around internal lining pipe, and described size reducing machine is wound around for coming from internal lining pipe
The internal lining pipe undergauge of cylinder, described traction machine is for drawing the internal lining pipe after undergauge；Described size reducing machine divides with traction machine
Be not arranged on the two ends treating lined steel pipe, and described size reducing machine rear end and traction machine front end be respectively provided with internal lining pipe is introduced and
Draw the directive wheel treating lined steel pipe.
Described internal lining pipe is wound around the front of cylinder and is provided with plastic extruder, and described plastic extruder is wound around cylinder with internal lining pipe
Between be provided with extruding wheel.
Described internal lining pipe is to be arranged on the anticorrosive coat treated on lined steel inside pipe wall, described in treat that the end of lined steel pipe is fixedly connected with
Joint, described anticorrosive coat is integral type structure, forms the heat-insulating and sealing chamber with annular space, weld bond after described two weld
Isolated with anticorrosive coat by heat-insulating and sealing chamber, described joint is additionally provided with the hole connected with heat-insulating and sealing chamber, fixing in described hole
Being provided with sealing blocking, described heat-insulating and sealing intracavity is provided with the charges filled by hole.
Described joint is fixedly installed on the outer surface treating lined steel tube end.
Described joint includes connecting portion that internal diameter is identical with outer diameter of steel pipes to be served as a contrast and the insulation part more than connecting portion diameter, institute
Stating insulation part and treat that lined steel pipe be arranged in parallel, the insulation part of adjacent two joints welds together.
Described anticorrosive coat is the continuous structure being arranged on inner surface of pipeline and end face.
Described joint is fixed on the end treating lined steel pipe.
Described joint includes being made up of inner core and the urceolus coaxial with inner core, and one end of urceolus is connected with inner core, adjacent
The urceolus of the joint of two pipelines welds together, and forms annular heat space between inner core and urceolus.
Described anticorrosive coat is the continuous structure being arranged on interior tube inner surface and end face and inner surface of pipeline.
The axial cross section of described inner core and urceolus is U-shaped or H-shaped structure.
This utility model compared with prior art, has the advantage that rational in infrastructure, can realize executing of continuous liner
Work, internal lining pipe is readily transported, and constructs simple and convenient, can alleviate the labor intensity of staff.
Accompanying drawing explanation
It is presented herein below and in conjunction with the accompanying drawings and embodiments this utility model is further illustrated.
Fig. 1 is the structural representation of this utility model embodiment one；
Fig. 2 is the structural representation of this utility model embodiment two；
Fig. 3 is the structure principle chart of this utility model site operation；
Fig. 4 is this utility model internal lining pipe extrusion artwork；
In figure: 1. treat lined steel pipe；2. joint；21. inner cores；22. urceolus；3. anticorrosive coat；4. heat-insulating and sealing chamber；5. weld bond；
6. hole；7. blocking；8. charges；9. liner flange；10. connecting portion；11. insulation part；12. internal lining pipes are wound around cylinder；13. undergauges
Machine；14. traction machines；15. internal lining pipes；16. directive wheels；17. plastic extruders；18. extruding wheels.
Detailed description of the invention
With reference to Fig. 3, corrosion resistant lining tube continuous construction equipment, it is wound around cylinder 12, size reducing machine including the internal lining pipe being arranged in order
13 and traction machine 14, described internal lining pipe is wound around cylinder 12 and is used for being wound around internal lining pipe 15, and described size reducing machine 13 is interior for coming from
Bushing pipe is wound around internal lining pipe 15 undergauge of cylinder 12, and traction machine 14 is for drawing the internal lining pipe 15 after undergauge；Size reducing machine 13
It is separately mounted to treat the two ends of lined steel pipe 1 with traction machine 14, and size reducing machine 13 rear end and traction machine 14 front end are respectively provided with
Internal lining pipe 15 is introduced and is drawn the directive wheel 16 treating lined steel pipe 1.Internal lining pipe 15 is anticorrosive coat 3 described below.
With reference to Fig. 4, the front being wound around cylinder 12 at internal lining pipe is provided with plastic extruder 17, plastic extruder 17 and internal lining pipe
It is wound around between cylinder 12 and is provided with extruding wheel 18.Being extruded by plastic tube by plastic extruder 17, then plastic tube is through extruding wheel 18
Crimp, is then wrapped in internal lining pipe and is wound around on cylinder 12, be transported to job site.
Seeing figures.1.and.2, be fixedly connected with joint 2 at the end treating lined steel pipe 1, wherein, anticorrosive coat 3 is tied for integral type
Structure, is formed after two joints 2 welding and has the heat-insulating and sealing chamber 4 of annular space, weld bond 5 by heat-insulating and sealing chamber 4 and anticorrosive coat 3 every
From, joint 2 is additionally provided with the hole 6 connected with heat-insulating and sealing chamber, is fixed with sealing blocking 7 in hole 6, sets in heat-insulating and sealing chamber 4
There are the charges 8 filled by hole 6.After two joints 2 have welded, in heat-insulating and sealing chamber 4, fill charges 8 by hole 6,
Seal such as glue class etc., then by sealing blocking 7 tight closures, prevent from revealing.
After welding, weld bond 5 is isolated with anticorrosive coat 3 by heat-insulating and sealing chamber 4, is possible not only to make solder joint remote by this structure
From anticorrosive coat 3, and isolated by heat-insulating and sealing chamber 4, can effectively prevent the heat damages anticorrosive coat 3 during welding, and
Heat non-rectilinear transmits, and can reduce conduction of heat, prevents from further damaging anticorrosive coat 3, so not only increases the anti-corrosive properties of pipeline
Energy and sealing property, also improve the linking intensity at pipe joint, to meet at sufficiently large intensity of pressure lower seal simultaneously.
Embodiment one:
Joint 2 is fixedly installed on the outer surface of pipeline body 1, and described anticorrosive coat 3 is arranged on the interior of adjacent two pipeline bodies
On wall.Wherein, joint includes connecting portion 10 that internal diameter is identical with pipeline body 1 external diameter and the insulation part more than connecting portion diameter
11, described insulation part 11 be arranged in parallel with pipeline body 1, and the insulation part 11 of adjacent two joints welds together.So pass through
The welding of two insulation part 11 can make solder joint away from anticorrosive coat 3, and is isolated by heat-insulating and sealing chamber 4, can effectively prevent
Heat damages anticorrosive coat 3 during welding, and the transmission of heat non-rectilinear, can reduce conduction of heat, prevents from further damaging anticorrosive coat
3, so not only increase antiseptic property and the sealing property of pipeline, also improve the linking intensity at pipe joint simultaneously, with
Meet at sufficiently large intensity of pressure lower seal.
The end of adjacent two pipeline bodies 1 is provided with the liner flange 9 extended along anticorrosive coat 3, adjacent two joints 2 interior
The corresponding contact of lining flange 9, forms the heat insulation close of annular by liner flange 9 and the insulation part 11 of two joints 2 and pipeline body 1
Envelope chamber 4.It is possible to prevent when filling charges 8 in heat-insulating and sealing chamber 4 to leak to anticorrosive coat by the corresponding contact of liner flange 9
In 3, improve sealing.
When specifically installing, pipeline body 1 is first welded with joint 2, makes the inwall of joint 2 and the outer surface of pipeline body 1
Fixing, then the inwall upper berth at pipeline body 1 sets anticorrosive coat 3, and outwards overturns formation liner in the end of pipeline body 1 and turn over
Adjacent two joints 2 are alignd by limit 9, make the liner flange 9 extruding contact of pipeline body 1 end, and weld insulation part 11
Connecing, wherein, weld bond 5 is that the welding of adjacent two insulation part 11 is formed, after weld, insulation part 11 and pipeline body 1 formed every
Heat seal chamber 4, is filled charges 8 in heat-insulating and sealing chamber 4 by hole 6, seals such as glue class etc., then blocked by sealing
7 plugging holes 6, prevent from revealing.
Embodiment two:
With reference to Fig. 2, above-mentioned joint 2 is fixed on the internal diameter of the end of pipeline body 1, the internal diameter of joint 2 and pipeline body 1
Unanimously, pipeline body 1 is equipped with anticorrosive coat 3 on the inwall of joint 2, anticorrosive coat 3 for be arranged on interior tube inner surface and end face and
Adjacent two joints 2 are welded by the continuous structure of inner surface of pipeline, can be coupled together by two pipeline bodies 1.
Joint includes being made up of inner core 21 and the urceolus 22 coaxial with inner core 21, and one end of urceolus 22 is connected with inner core 21
Connecing, the urceolus 22 of the joint of adjacent two pipelines welds together, and forms annular heat annular seal space between inner core 21 and urceolus 22
4.Owing to urceolus 22 is away from anticorrosive coat 3, solder joint so can be made away from anticorrosive coat 3, do not damage anticorrosive coat 3, it is ensured that antiseptic effect.
Meanwhile, anticorrosive coat 3, when laying, can extend at the inner core 21 of adjacent two joints 2 and form liner flange
9, i.e. two liner flange 9 wrap the end face of inner core 21, and liner flange 9 correspondence of adjacent two joints 2 contacts, and i.e. two
While the inner core 21 of individual joint 2 is shorter than urceolus 22, so welding urceolus 22, the liner flange 9 between two inner cores 21 can be made
It is in close contact, prevents from leaking in anticorrosive coat 3 when filling charges 8 in heat-insulating and sealing chamber 4, improve sealing.
Wherein, the axial cross section of described inner core 21 and urceolus 22 is U-shaped or H-shaped structure.Certainly, can as required, also
Can be other structures that can realize buffer action.
From the foregoing, it will be observed that the weld bond 5 of joint 2 is away from anticorrosive coat 3, and the structure with isolating seal chamber 4 belongs to protection
Within the scope of.
During construction, scene is treated lined steel pipe 1 and is first welded with joint 2, and the inwall making joint 2 is put down with the inwall treating lined steel pipe 1
After the most fixing, set anticorrosive coat 3 on the inwall upper berth treating lined steel pipe 1 and joint 2, when laying, owing to internal lining pipe 15 is through too much
After the isometrical compression of level, temporarily reduce the external diameter of bushing pipe, be so wound around after cylinder 12 is wound around by internal lining pipe and transport to job site,
Then in internal lining pipe 15 is drawn in by steel wire rope and to be treated lined steel pipe 1 by traction machine 14, when internal lining pipe 15 is completely into treating lined steel pipe 1
Through after a period of time, internal lining pipe 15 slowly recover and with the former inwall treating lined steel pipe 1 combining tightly, the scheduled time
The end of inner core 21 is outwards overturn formation liner flange 9 the most again, by adjacent two joints alignment, makes the liner of inner core 21 end
Flange 9 extruding contact, and urceolus 22 is welded, wherein, weld bond 5 is that two urceolus 22 welding are formed, after having welded, outward
Between cylinder 22 and inner core 21 and two inner cores 21, the liner flange 9 of extruding forms heat-insulating and sealing chamber 4, by hole 6 to heat-insulating and sealing
Fill charges 8 in chamber 4, seal such as glue class etc., then by sealing blocking 7 plugging holes 6, prevent from revealing.
This utility model is rational in infrastructure, can reduce conduction of heat by the heat-insulating and sealing chamber 4 of annular, can effectively prevent anticorrosion
The damage that causes of layer, sealing and antiseptic property are good, can effectively prevent pipe leakage, extend pipeline service life, and can subtract
Little entire outer diameter, it is simple to construction.
This utility model is not limited to above-mentioned embodiment, in the ken that those skilled in the art are possessed,
Can also make a variety of changes on the premise of without departing from this utility model objective, the content after change still falls within this utility model
Protection domain.
Claims (10)
1. corrosion resistant lining tube continuous construction equipment, it is characterised in that: include the internal lining pipe that is arranged in order be wound around cylinder, size reducing machine and
Traction machine, described internal lining pipe is wound around cylinder and is used for being wound around internal lining pipe, and described size reducing machine is wound around cylinder for coming from internal lining pipe
Internal lining pipe undergauge, described traction machine is for drawing the internal lining pipe after undergauge；Described size reducing machine is pacified respectively with traction machine
It is contained in the two ends treating lined steel pipe, and described size reducing machine rear end and traction machine front end are respectively provided with and are introduced by internal lining pipe and draw
Treat the directive wheel of lined steel pipe.
Corrosion resistant lining tube continuous construction equipment the most according to claim 1, it is characterised in that: described internal lining pipe is wound around cylinder
Front be provided with plastic extruder, described plastic extruder and internal lining pipe are wound around between cylinder and are provided with extruding wheel.
Corrosion resistant lining tube continuous construction equipment the most according to claim 1 and 2, it is characterised in that: described internal lining pipe is for setting
Put at the anticorrosive coat treated on lined steel inside pipe wall, described in treat that the end of lined steel pipe is fixedly connected with joint, described anticorrosive coat is integrated
Formula structure, forms the heat-insulating and sealing chamber with annular space after described two weld, weld bond passes through heat-insulating and sealing chamber and anticorrosion
Layer isolation, described joint is additionally provided with the hole connected with heat-insulating and sealing chamber, is fixed with sealing blocking in described hole, described heat insulation
The charges filled by hole it are provided with in annular seal space.
Corrosion resistant lining tube continuous construction equipment the most according to claim 3, it is characterised in that: described joint is fixedly installed on
Treat the outer surface of lined steel tube end.
Corrosion resistant lining tube continuous construction equipment the most according to claim 4, it is characterised in that: described joint include internal diameter with
Connecting portion that outer diameter of steel pipes to be served as a contrast is identical and the insulation part more than connecting portion diameter, described insulation part is parallel with treating lined steel pipe to be set
Putting, the insulation part of adjacent two joints welds together.
Corrosion resistant lining tube continuous construction equipment the most according to claim 5, it is characterised in that: described anticorrosive coat is for being arranged on
Inner surface of pipeline and the continuous structure of end face.
Corrosion resistant lining tube continuous construction equipment the most according to claim 3, it is characterised in that: described joint is fixed on to be waited to serve as a contrast
The end of steel pipe.
Corrosion resistant lining tube continuous construction equipment the most according to claim 7, it is characterised in that: described joint includes by inner core
And the urceolus composition coaxial with inner core, one end of urceolus is connected with inner core, and the urceolus of the joint of adjacent two pipelines is welded on
Together, annular heat space is formed between inner core and urceolus.
Corrosion resistant lining tube continuous construction equipment the most according to claim 8, it is characterised in that: described anticorrosive coat is for being arranged on
Interior tube inner surface and end face and the continuous structure of inner surface of pipeline.
Corrosion resistant lining tube continuous construction equipment the most according to claim 9, it is characterised in that: described inner core and urceolus
Axial cross section is U-shaped or H-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620517143.4U CN205674484U (en) | 2016-06-01 | 2016-06-01 | Corrosion resistant lining tube continuous construction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620517143.4U CN205674484U (en) | 2016-06-01 | 2016-06-01 | Corrosion resistant lining tube continuous construction equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205674484U true CN205674484U (en) | 2016-11-09 |
Family
ID=57436594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620517143.4U Expired - Fee Related CN205674484U (en) | 2016-06-01 | 2016-06-01 | Corrosion resistant lining tube continuous construction equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205674484U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112172123A (en) * | 2020-10-15 | 2021-01-05 | 陕西中科非开挖技术股份有限公司 | High pressure pipeline inside lining undergauge processing apparatus |
| CN117021590A (en) * | 2023-10-08 | 2023-11-10 | 四川航天拓达玄武岩纤维开发有限公司 | Hot-melting connection device and method for inner wall of plastic pipe and basalt material |
-
2016
- 2016-06-01 CN CN201620517143.4U patent/CN205674484U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112172123A (en) * | 2020-10-15 | 2021-01-05 | 陕西中科非开挖技术股份有限公司 | High pressure pipeline inside lining undergauge processing apparatus |
| CN117021590A (en) * | 2023-10-08 | 2023-11-10 | 四川航天拓达玄武岩纤维开发有限公司 | Hot-melting connection device and method for inner wall of plastic pipe and basalt material |
| CN117021590B (en) * | 2023-10-08 | 2023-12-19 | 四川航天拓达玄武岩纤维开发有限公司 | Hot-melting connection device and method for inner wall of plastic pipe and basalt material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2817985E (en) | Pipe arrangement and process | |
| CN104405975A (en) | Steel pipe with bell and spigot joints | |
| CN201100490Y (en) | Direct buried steam insulation pipe | |
| CN107339524A (en) | A kind of new pipe fitting and its pipe-line system | |
| CN205674484U (en) | Corrosion resistant lining tube continuous construction equipment | |
| CN107654772A (en) | A kind of flexible slide-in type socket joint connecting tube | |
| CN205669654U (en) | Interior anticorrosion pipeline joint connecting structure | |
| CN203963363U (en) | Superhigh molecular polyethylene compound pipe pipeline connecting structure | |
| CN207762406U (en) | A kind of flexibility slide-in type socket joint connecting tube | |
| CN205877597U (en) | Tip sealing connecting piece and direct -burried type heat - supply pipeline of insulating tube | |
| CN204785312U (en) | Well water pipeling and normal water conveying system | |
| CN103912731A (en) | Directly-buried prefabricated independently-sealed steam tube with tube bundle leakage warning function and heat-insulation layer, and method for manufacturing directly-buried prefabricated independently-sealed steam tube | |
| CN216408186U (en) | Prefabricated polyurethane heat-preservation fixed heat-insulation pipe bracket | |
| CN101943298B (en) | Vacuum composite delivery pipe and connecting structure | |
| CN210179174U (en) | Anticorrosive structure of buried pipeline junction | |
| CN203857140U (en) | Direct-burial prefabricated independent thermal insulation layer sealing steam pipe with pipe bundle leakage alarm | |
| CN210003959U (en) | A marine oil and gas delivery hose | |
| CN201964089U (en) | Anticorrosion pipeline | |
| CN211779577U (en) | Fracture connection tee joint | |
| CN205938315U (en) | Stagnant water heat -preservation sleeve compensator for well | |
| CN205298859U (en) | Compound pipe of steel skeleton PE plastics | |
| CN206093278U (en) | Novel feedwater socket joint formula welding steel pipe structure | |
| CN206647642U (en) | A kind of high-tensile steel wires hydralic hose | |
| CN204459499U (en) | Pipeline | |
| CN202561297U (en) | Pipeline for transporting petroleum and natural gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190722 Address after: 257091 No. 20 Emeishan Road, Shengli Economic Development Zone, Dongying District, Dongying City, Shandong Province Patentee after: Shengli oil field JINDA Petroleum Technology Co Ltd Address before: 257000 No. 308, three West Road, Shandong, Dongying Patentee before: Zhu Yefei |
|
| 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: 20161109 Termination date: 20210601 |