CN106949324A - Socket type pipeline hydraulic test method - Google Patents
Socket type pipeline hydraulic test method Download PDFInfo
- Publication number
- CN106949324A CN106949324A CN201710172749.8A CN201710172749A CN106949324A CN 106949324 A CN106949324 A CN 106949324A CN 201710172749 A CN201710172749 A CN 201710172749A CN 106949324 A CN106949324 A CN 106949324A
- Authority
- CN
- China
- Prior art keywords
- socket
- pipeline
- section
- duct
- test method
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/03—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to seal for pipe joints technical field, a kind of socket type pipeline hydraulic test method is specifically provided.Present invention seek to address that the problem of experiment sealing ring can not recycle, not possess flexible interface rotational characteristic and waste of resource in the prior art.For this purpose, the invention provides a kind of socket type pipeline hydraulic test method, this method includes：Socket duct and socket pipeline are provided, the socket duct includes the first section and the second section；Then the end of the socket pipeline is pushed into the range of first section；Experiment seal member is then installed in the end of the socket pipeline；And then the socket pipeline and second section is engaged with each other and form toroidal cavity between the socket pipeline and first section；Liquid is injected in the most backward toroidal cavity and detects the sealing effectiveness of the socket type pipeline.The method of the present invention can realize experiment recycled with sealing ring, the saving of the compliant rotational of interface and resource.
Description
Technical field
The invention belongs to seal for pipe joints technical field, a kind of socket type pipeline hydraulic test method is specifically provided.
Background technology
Having many uses for pipeline is general, be used primarily in feedwater, draining, heat supply, give gas, long distance delivery oil and natural
In gas, agricultural irrigation, hydraulic engineering and various commercial plants.In order to ensure the safe operation of pipeline, pipeline pressure test becomes pipe
A very important link in road engineering, it is the effective ways for examining pipeline manufacture, installation quality whether qualified.Except wanting
Body is carried out outside pressure test, also the sealing joint of pipeline detected.
Bayonet joint is the connected mode commonly used between pipeline and pipeline.At present, a kind of double containment single port hydraulic pressure tries
Proved recipe method there is provided socket duct and socket pipeline, wherein, on the socket pipeline set twice groove；It will pacify on the groove
Fill primary seal circle and experiment sealing ring；The socket pipeline is pushed into the socket duct, make the socket pipeline with
The socket duct is closely fitted；Held to being injected between the primary seal circle and the experiment sealing ring described in liquid and inspection
The sealing effectiveness of the formula of inserting pipeline.Described double containment single port hydraulic pressure system is after the completion of experiment, and the experiment sealing ring can not be followed
Ring is used, meanwhile, the socket pipeline and fixation of the socket duct by the primary seal circle and experiment sealing ring, two
Person can not relatively be rotated, and lose the characteristic that flexible interface can be rotated.In addition, there is single sealing water pressure test side
Method, this test method needs substantial amounts of water or other materials to detect the air-tightness of sealing ring, therefore generates waste of resource
The problem of.
Correspondingly, this area needs a kind of new socket type pipeline hydraulic test method to solve the above problems.
The content of the invention
It has been to solve experiment sealing ring in the prior art to circulate to solve above mentioned problem of the prior art
Using, do not possess flexible interface rotational characteristic and waste of resource the problem of, the invention provides a kind of socket type pipeline hydraulic pressure
Test method, this method comprises the following steps：Socket duct and socket pipeline are provided, wherein, the socket duct includes first
Section and the second section, the diameter with diameter greater than second section of first section；Installed in the bellmouth interface portion
Upper primary seal circle；The socket pipeline is inserted in the socket duct, until the end of the socket pipeline is in described the
In the range of one section；Experiment seal member is installed in the end of the socket pipeline；The socket pipeline is pushed further into
Into the socket duct so that the socket pipeline is engaged with each other and in the socket pipeline and institute with second section
State and form toroidal cavity between the first section；Liquid is injected into the toroidal cavity and detects that the socket duct is inserted with described
Sealing effectiveness between mouth pipeline.
In the optimal technical scheme of above-mentioned socket type pipeline hydraulic test method, the socket duct includes engagement
Portion, methods described also includes：Before the socket pipeline is inserted in the socket duct, installed in advance in the interface portion
Primary seal part.
In the optimal technical scheme of above-mentioned socket type pipeline hydraulic test method, the end of the socket pipeline is set
The step of having rake, described " experiment seal member is installed in the end of the socket pipeline " further comprises tilting described
Portion is installed by the experiment seal member.
In the optimal technical scheme of above-mentioned socket type pipeline hydraulic test method, the socket duct also includes first
Changeover portion, the second changeover portion and the 3rd section, first section are connected by First Transition section with second section,
Second section is connected by second changeover portion with the 3rd section, second section with diameter greater than described
The diameter of three sections, under the trystate assembled, the rake of the socket pipeline and the examination being disposed thereon
Test seal member and the second changeover portion tight abutment.
In the optimal technical scheme of above-mentioned socket type pipeline hydraulic test method, note is provided with the socket pipeline
The step of liquid mouthful and steam vent, described " injecting liquid into the toroidal cavity ", specifically includes：By the liquid injection port to institute
Injection testing liquid in toroidal cavity is stated, while the gas in the toroidal cavity is discharged by the steam vent.
In the optimal technical scheme of above-mentioned socket type pipeline hydraulic test method, methods described also includes：In experiment
After end, the socket pipeline is extracted out from the socket duct, until the end of the socket pipeline is again at institute
In the range of stating the first section；The end of experiment seal member from the socket pipeline is disassembled.
In the optimal technical scheme of above-mentioned socket type pipeline hydraulic test method, methods described also includes：Described
Axial force-resisting detent mechanism is installed, to prevent the socket pipeline and the socket duct disconnected from each other at steam vent.
In the optimal technical scheme of above-mentioned socket type pipeline hydraulic test method, the axial force-resisting detent mechanism is fixed
Position pin.
Socket type pipeline hydraulic test method optimal technical scheme in, the axial force-resisting detent mechanism is locating ring.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, first provide socket duct and
Socket pipeline, the socket duct include the first section and the second section, first section with diameter greater than secondth area
The diameter of section；Then the socket pipeline is inserted in the socket duct, until the end of the socket pipeline is in described
In the range of first section；Experiment seal member is then installed in the end of the socket pipeline；And then by the socket pipeline
It is pushed further into the socket duct so that the socket pipeline is engaged with each other with second section and inserted described
Toroidal cavity is formed between mouth pipeline and first section；Held in the most backward toroidal cavity described in injection liquid and detection
Sealing effectiveness between mouth pipeline and the socket pipeline.Due to using above-mentioned steps, the method for the present invention can realize experiment
With the recycling of sealing ring, the compliant rotational of interface tube and the characteristic economized on resources.
Brief description of the drawings
Fig. 1 is the key step flow chart of the socket type pipeline hydraulic test method of the present invention；
Fig. 2 is the profile before the experiment of the socket type pipeline hydraulic test system of the present invention；
Profile when Fig. 3 is the experiment of the socket type pipeline hydraulic test system of the present invention；
Fig. 4 is the profile after the experiment of the socket type pipeline hydraulic test system of the present invention.
Embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining the know-why of the present invention, it is not intended that limit the scope of the invention.Although for example,
Experiment is described with liquid combination water in specification, still, and the present invention obviously can use the experiment liquid of other forms
Body, as long as the liquid will not cause corrosion to pipeline and sealing ring in itself.
It should be noted that in the description of the invention, term " on ", " under ", "left", "right", " interior ", " outer " etc. are indicated
Direction or position relationship term be based on direction shown in the drawings or position relationship, this is intended merely to facilitate description, and
It is not instruction or implies that described device or element there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " are only used for describing purpose, without being understood that
To indicate or implying relative importance.
In addition it is also necessary to explanation, in the description of the invention, unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.To those skilled in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the present invention.
As shown in figure 1, the implementation steps of the spigot-and-socket hydraulic pipeline test method of the present invention include：There is provided hold by step S1
Mouth pipeline and socket pipeline, wherein, the socket duct includes the first section and the second section, and the diameter of first section is big
Primary seal circle is installed in the diameter of second section, and in the bellmouth interface portion；Step S2, the socket pipeline is inserted
Enter in the socket duct, until the end of the socket pipeline is in the range of first section；Step S3, described
The end of socket pipeline is installed by experiment seal member；Step S4, the socket duct is pushed further into by the socket pipeline
It is interior so that the socket pipeline and second section are engaged with each other and between the socket pipeline and first section
Form toroidal cavity；Step S5, liquid is injected into the toroidal cavity and the socket duct and the socket pipeline is detected
Between sealing effectiveness.
Refering to Fig. 2, Fig. 2 is the profile before the experiment of the socket type pipeline hydraulic test system of the present invention.Specifically, institute
Stating hydraulic test system includes socket pipeline 1 and socket duct 2, and the socket duct 2 includes the first section 21 and the second section
22, the diameter with diameter greater than second section 22 of first section 21.
With continued reference to Fig. 2, specifically, the socket duct 2 includes junction surface 26, the joint portion 26 and firstth area
Section 21 is connected, and methods described step S2 also includes：Before the socket pipeline 1 is inserted in the socket duct 2, exist in advance
The interface portion installs primary seal part 4.
With continued reference to Fig. 2, specifically, the end of the socket pipeline 1 is provided with rake 11, and the step S3 is further
Including after the socket pipeline 1 is inserted into the first section 21, the experiment sealing is installed in the rake 11
Part 12.
Referring next to Fig. 3, profile when Fig. 3 is the experiment of the socket type pipeline hydraulic test system of the present invention.Specifically
Ground, the socket duct 2 also includes First Transition the 23, second changeover portion 24 of section and the 3rd section 25, and first section 21 leads to
Cross the First Transition section 23 with second section 22 to be connected, second section 22 passes through second changeover portion 24 and institute
State the 3rd section 25 to be connected, the diameter with diameter greater than the 3rd section 25 of second section 22, in the experiment assembled
Under state, the rake 11 of the socket pipeline 1 and the experiment seal member 12 being disposed thereon and second mistake
Cross the tight abutment of section 24.So as to which the socket pipeline 1 is engaged with second section 22 and formed with first section 21
Toroidal cavity 3.
Referring next to Fig. 3, specifically, liquid injection port 27 and steam vent 28, the step S5 are provided with the socket pipeline 1
Specifically include：By the liquid injection port 27 into the toroidal cavity 3 injection testing water, while in the toroidal cavity 3
Gas is discharged by the steam vent 28.It is possible to further set air bleeding valve (not indicated in figure) on the steam vent 28,
The air bleeding valve is threadedly coupled with the steam vent 28, consequently facilitating dismounting.When starting water filling, by water pipeline and the water filling
Mouth 27 is connected, and opens the gas in the air bleeding valve emptying toroidal cavity 3, treats to close the air bleeding valve after gas emptying, after
Continuous water filling pressurization, can pull down the air bleeding valve after the completion of experiment.It is of course also possible to installation air bleeding valve be omitted, in water filling
The purpose of exhaust can equally be reached by blocking the steam vent after a period of time.
Fig. 4 is finally referred to, Fig. 4 is the profile after the experiment of the socket type pipeline hydraulic test system of the present invention.Specifically
Ground, the method for the present invention can also include：After off-test, the socket pipeline 1 is taken out from the socket duct 2
Go out, until the end of the socket pipeline 1 is again in the range of first section 21, by the experiment seal member 12
Disassemble and can recycle from the end of the socket pipeline 1.Due to now the only one of which fulcrum of primary seal circle 4, institute
Stating socket pipeline 1 can be on the premise of sealing be ensured relative to the socket duct 2 neatly compliant rotational, and setting can be with
The attitude of maximum rotation angle is presented, so as to adapt to various experiment installation scenarios.In addition, installing anti-axle at the steam vent 28
Power alignment pin 5, to prevent the socket pipeline 1 and the socket duct 2 disconnected from each other.Although accompanying drawing is positioned with axial force-resisting
What pin 5 was described for preferred embodiment, it is apparent that can substitute in other ways, such as locating ring.
So far, combined preferred embodiment shown in the drawings describes technical scheme, still, this area
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these embodiments.Without departing from this
On the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to correlation technique feature, these
Technical scheme after changing or replacing it is fallen within protection scope of the present invention.
Claims (9)
1. a kind of socket type pipeline hydraulic test method, it is characterised in that methods described comprises the following steps：
Socket duct and socket pipeline are provided, wherein, the socket duct includes the first section and the second section, firstth area
The diameter with diameter greater than second section of section；
Primary seal circle is installed in the bellmouth interface portion；
The socket pipeline is inserted in the socket duct, until the end of the socket pipeline is in first section
In the range of；
Experiment seal member is installed in the end of the socket pipeline；
The socket pipeline is pushed further into the socket duct so that the socket pipeline and second section that
This engages and forms toroidal cavity between the socket pipeline and first section；
Liquid is injected into the toroidal cavity and the sealing effectiveness between the socket duct and the socket pipeline is detected.
2. socket type pipeline hydraulic test method according to claim 1, it is characterised in that the socket duct includes connecing
Conjunction portion, methods described also includes：Before the socket pipeline is inserted in the socket duct, pacify in advance in the interface portion
Fill primary seal part.
3. socket type pipeline hydraulic test method according to claim 2, it is characterised in that the end of the socket pipeline
The step of being provided with rake, described " experiment seal member is installed in the end of the socket pipeline " further comprises described
Rake installs the experiment seal member.
4. socket type pipeline hydraulic test method according to claim 3, it is characterised in that the socket duct also includes
First Transition section, the second changeover portion and the 3rd section, first section pass through First Transition section and second section
Be connected, second section is connected by second changeover portion with the 3rd section, second section with diameter greater than
The diameter of 3rd section, under the trystate assembled, the rake of the socket pipeline and is disposed thereon
The experiment seal member and the second changeover portion tight abutment.
5. socket type pipeline hydraulic test method according to claim 4, it is characterised in that set on the socket pipeline
The step of having liquid injection port and steam vent, described " injecting liquid into the toroidal cavity " specifically includes：Pass through the liquid injection port
The injection testing liquid into the toroidal cavity, while the gas in the toroidal cavity is discharged by the steam vent.
6. socket type pipeline hydraulic test method according to claim 5, it is characterised in that methods described also includes：
After off-test, the socket pipeline is extracted out from the socket duct, until the end of the socket pipeline
It is again in the range of first section；
The end of experiment seal member from the socket pipeline is disassembled.
7. socket type pipeline hydraulic test method according to claim 6, it is characterised in that methods described also includes：
Axial force-resisting detent mechanism is installed, to prevent the socket pipeline and the socket duct disconnected from each other at the steam vent.
8. socket type pipeline hydraulic test method according to claim 7, it is characterised in that the axial force-resisting detent mechanism
It is alignment pin.
9. socket type pipeline hydraulic test method according to claim 7, it is characterised in that the axial force-resisting detent mechanism
It is locating ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710172749.8A CN106949324B (en) | 2017-03-22 | 2017-03-22 | Hydraulic test method for socket type pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710172749.8A CN106949324B (en) | 2017-03-22 | 2017-03-22 | Hydraulic test method for socket type pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106949324A true CN106949324A (en) | 2017-07-14 |
| CN106949324B CN106949324B (en) | 2020-06-30 |
Family
ID=59473127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710172749.8A Active CN106949324B (en) | 2017-03-22 | 2017-03-22 | Hydraulic test method for socket type pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106949324B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020101449A (en) * | 2018-12-21 | 2020-07-02 | 株式会社栗本鐵工所 | Hydraulic pressure test apparatus and method of pipe joint |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2387625A (en) * | 2002-04-02 | 2003-10-22 | Gerald James Winskill | A sealing ring or gasket for a pipeline joint |
| DE102004025135B4 (en) * | 2004-05-17 | 2006-04-20 | Pt-Poly-Tec Gmbh Vertrieb Und Herstellung Von Dichtsystemen | Method and arrangement for leakage warning and component positioning display in socket joints |
| CN102242841A (en) * | 2011-06-23 | 2011-11-16 | 陈穗玲 | Self-sealing double-rubber-ring pipeline flexible connector |
| CN202501130U (en) * | 2012-03-31 | 2012-10-24 | 贵州森瑞管业有限公司 | Socket pipe capable of quickly detecting water leakage of socket pipe joint |
| CN202580450U (en) * | 2012-03-30 | 2012-12-05 | 厦门千秋业水泥制品有限公司 | Novel anti-seepage inspection structure of precast pipe galleries |
| CN104633359A (en) * | 2015-02-27 | 2015-05-20 | 吉林钰翎珑钢管钢构制造有限公司 | Socket connection type bend |
| CN204533898U (en) * | 2015-02-13 | 2015-08-05 | 北钢管业（营口）有限公司 | A kind of welded tube socket joint linkage structure |
-
2017
- 2017-03-22 CN CN201710172749.8A patent/CN106949324B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2387625A (en) * | 2002-04-02 | 2003-10-22 | Gerald James Winskill | A sealing ring or gasket for a pipeline joint |
| DE102004025135B4 (en) * | 2004-05-17 | 2006-04-20 | Pt-Poly-Tec Gmbh Vertrieb Und Herstellung Von Dichtsystemen | Method and arrangement for leakage warning and component positioning display in socket joints |
| CN102242841A (en) * | 2011-06-23 | 2011-11-16 | 陈穗玲 | Self-sealing double-rubber-ring pipeline flexible connector |
| CN202580450U (en) * | 2012-03-30 | 2012-12-05 | 厦门千秋业水泥制品有限公司 | Novel anti-seepage inspection structure of precast pipe galleries |
| CN202501130U (en) * | 2012-03-31 | 2012-10-24 | 贵州森瑞管业有限公司 | Socket pipe capable of quickly detecting water leakage of socket pipe joint |
| CN204533898U (en) * | 2015-02-13 | 2015-08-05 | 北钢管业（营口）有限公司 | A kind of welded tube socket joint linkage structure |
| CN104633359A (en) * | 2015-02-27 | 2015-05-20 | 吉林钰翎珑钢管钢构制造有限公司 | Socket connection type bend |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020101449A (en) * | 2018-12-21 | 2020-07-02 | 株式会社栗本鐵工所 | Hydraulic pressure test apparatus and method of pipe joint |
| JP7232641B2 (en) | 2018-12-21 | 2023-03-03 | 株式会社栗本鐵工所 | HYDRAULIC PRESSURE TESTING DEVICE AND HYDRAULIC TESTING METHOD FOR PIPE JOINT |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106949324B (en) | 2020-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8881689B2 (en) | Exhaust adapter and combustion apparatus having the same | |
| US8459698B2 (en) | Riser cap and irrigation piping system using same | |
| EP2901065B1 (en) | Balloon catheter apparatus for high pressure leak detection | |
| CN104929911B (en) | Oil circulation method of compressor unit | |
| JPH09144970A (en) | Instantaneous type self-seal connector | |
| CN106949324A (en) | Socket type pipeline hydraulic test method | |
| CN207298143U (en) | A kind of connector for hot-water heating PPR pipe | |
| CN210830997U (en) | Anti-leakage safety plugging device for pressure fluid pipeline | |
| CN205191037U (en) | Inhale oil pipe way for testing platform | |
| CN208268582U (en) | A kind of gas connection pipes connector that leakproofness is high | |
| CN207689076U (en) | Socket type pipeline hydraulic test system | |
| CN106838517A (en) | A kind of new quick coupling | |
| CN208687177U (en) | A kind of heating furnace centrifugal cast cannulation connection structure | |
| CN108506738A (en) | A kind of harmful influence non-stop plugging drilling system and drilling method | |
| CN109373079A (en) | A kind of non-dismountable connector slotting fastly of pipeline | |
| CN209524205U (en) | A kind of spigot-and-socket steel push pipe connector | |
| CN106959192B (en) | Socket type pipeline hydraulic test system | |
| CN207830783U (en) | Integral type spherical surface hose joint | |
| CN210196691U (en) | Quick-assembling joint device for pipeline | |
| CN205841956U (en) | A kind of Quick connected ball valve | |
| US10352633B2 (en) | Flow passage connecting apparatus for heat exchanger | |
| CN111379908A (en) | Hydraulic fitting with backup seal | |
| CN202708391U (en) | Steam pipe installing joint used for hydrochloric acid tank used for heat treatment of steel cord | |
| RU2418231C1 (en) | Elastic casing for pressure tight pipeline shutdown | |
| CN212776244U (en) | Anti-leakage double-layer pipe for conveying corrosive liquid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 2 Guangyuan Road, Tangguantun Processing and Logistics Zone, Jinghai District, Tianjin, 300000 Patentee after: TIANJIN JIUSHENG TONGDA TECHNOLOGY CO.,LTD. Address before: 301606, 500 meters north of Sidangkou Houcun, Caigongzhuang Town, Jinghai County, Tianjin City Patentee before: TIANJIN JIUSHENG TONGDA TECHNOLOGY CO.,LTD. |
|
| CP02 | Change in the address of a patent holder |