CN110159847A - A kind of pipe union and clamp device convenient for fastening - Google Patents
A kind of pipe union and clamp device convenient for fastening Download PDFInfo
- Publication number
- CN110159847A CN110159847A CN201910387894.7A CN201910387894A CN110159847A CN 110159847 A CN110159847 A CN 110159847A CN 201910387894 A CN201910387894 A CN 201910387894A CN 110159847 A CN110159847 A CN 110159847A
- Authority
- CN
- China
- Prior art keywords
- fastening
- nut
- convenient
- clamp device
- pipe union
- 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.)
- Pending
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
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/04—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
Abstract
The invention discloses a kind of pipe unions and clamp device convenient for fastening, two connectors connected including nut with nut, the connector connecting pin of two connectors is internally provided with sealing ring, internal screw thread is arranged in the piping connection end of two connectors, the nut is cylinder, and outer surface is provided with turbo tooth.At the same time, it is provided with the clamp device for fastening the union, which includes pedestal and the worm screw that is placed on the pedestal, the turbine tooth engagement on the worm screw and the nut.Pipe union of the invention and clamp device improve former pipe union fastening means, to because being mounted on more narrow position, solve the problem for causing fastening difficult because of the limitation of fastening means effectively, when car with during there is union leakage when, it can be convenient ground butt joint and carry out dismantling and fastening processing, while can be used for the connection and sealing of general pipeline.
Description
Technical field
The invention belongs to union technical fields, and in particular to a kind of pipe union and clamp device convenient for fastening.
Background technique
Union is a kind of common conduit coupling that can facilitate installing and dismounting, braking, life on rolling stock etc.
Device largely uses.Brake piping characteristics of compact layout under existing passenger train, brake piping are arranged in each equipment and structure under vehicle
Liang Jian, during dynamic is used, due to pipeline vibration, pipeline is easy to produce loosening, to cause union inner rubber close
It leaks out at seal, influences car braking, cause safety accident, however union used on existing car brake piping, adopt
It is fastened with traditional outer six square nuts, due to because of passenger train plan, some unions are often in each equipment under vehicle
And the narrow position between structure beam, fastening is difficult, and some connectors can not be handled when sewing, in the operation of car main track, because
Leakage failure can not be handled and failure is made to influence to expand.And being continuously increased with car various functions, passenger car is lower to fill use
Equipment it is more and more, the installation site of brake piping is increasingly restricted, piping connection union leak when fastening at
It manages more and more difficult.Accordingly, it is desirable to provide a kind of pipe union can carry out disassembly and tight to union in narrow position
Gu processing.
Summary of the invention
Technical problem solved by the present invention is providing a kind of pipe union and clamp device convenient for fastening, improve
Former pipe union fastening means makes to cause fastening tired because of the limitation of fastening means to because being mounted on more narrow position
Difficult problem is effectively solved, when car with during there is union leakage when, can be convenient ground butt joint and carry out
Dismantling and fastening processing, while can be used for the connection and sealing of general pipeline.
The technical solution adopted by the invention is as follows:
The connector of a kind of pipe union convenient for fastening, two connectors connected including nut with nut, two connectors connects
It connects end and is internally provided with sealing ring, internal screw thread is arranged in the piping connection end of the connector, and the nut is cylinder, and outer surface is set
It is equipped with turbo tooth.
The nut outer surfaces of pipe union of the invention are provided with turbo tooth, thus can be used in fastening worm screw with
Turbo tooth cooperation, realizes the fastening of pipe union, is changed to fastening position admittedly in nut tightening by directly indirectly tight with worm screw
Gu the action direction of power changes when fastening, therefore, can effectively solve because connector caused by spatial position is limited can not be tight
Solid problem, be conducive to the limited space connector fastening of operation, this fastening means changes traditional square nut fastening Shi Shouqi
The shortcomings that circumferential locations limitation spanner in place can not be inserted in, worm screw can engage implementation tightly with nut in circumference any position
Gu at the same time, being fastened using turbine and worm mode, due to the particularity of its power, torsion does not impact when nut fastens, and fastens
Torque is steady, and inner sealing gasket is damaged caused by can avoid because of impact, and is fastened using turbine and worm, so that gasket stress is equal
It is even, reach better seal effect.
Preferably, the connector exterior is hexagon.
Using above-mentioned preferred embodiment, connector is selected hexagon shape, is fastened convenient for nut butt joint, while not by spiral shell
Female circumferential position limitation.
Preferably, the connector connecting pin of the connector is internally provided with boss, is cased with sealing ring on the boss.
Using above-mentioned preferred embodiment, it is arranged inside connector convenient for sealing ring.
It is a kind of for fasten be convenient for fastening pipe union clamp device, including the bottom being detachably connected with pipeline
Seat, the pedestal are equipped with the worm screw with the nut turbine tooth engagement.
Using above-mentioned preferred embodiment, convenient for clamp device to be fixed on pipeline, union is fastened, and is completed
It is convenient for taking apart clamp device from pipeline after fastening.And above-mentioned clamp device is used, relative to fastening tools such as spanners
Occupied position is small, therefore fastens to narrow position connector more convenient.
Preferably, the pedestal includes two slotted brackets, connecting rod that there are two two slotted bracket top connections,
Symmetrical connecting plate is provided in two connecting rods, two connecting plates are connect with worm-drive, the worm screw and spiral shell
Female turbine tooth engagement；The lower part groove profile opening size of the slotted bracket is more than or equal to outer diameter tube size, the slot
The lower part groove profile opening of type bracket is provided with the fastener being fixedly connected with pipeline.
Using above-mentioned preferred embodiment, the understructure of above-mentioned clamp device is simple, it may be convenient to fix clamp device
In installation pipeline, union is fastened using the fastening means of turbine and worm, and occupy little space, be suitable for narrow position union
Fastening, and complete union fastening after, it may be convenient to clamp device is disassembled from pipeline, can be convenient simultaneously
Adjust position of the clamp device on pipeline.
Preferably, the fastener includes bayonet lock, and the lower part slot-type openings two sides of the slotted bracket are equipped with pin hole, institute
It states bayonet lock and is connected to two pin holes.
Using above-mentioned preferred embodiment, which can be quickly and easily by clamp device handling on pipeline.
Preferably, the through-hole for allowing worm screw to pass through is provided on one of them described connecting plate, described worm screw one end passes through
Through-hole is provided with clamping lever.
Using above-mentioned preferred embodiment, worm screw can be made to be configured as needed to the length of clamping lever tight to reach nut
Solid purpose, suitable for different demands union fasten.
Preferably, the clamping lever is equipped with sleeve barrel tool.
Using above-mentioned preferred embodiment, facilitate the fastening of union.
Preferably, the slotted bracket and connecting rod are integrally formed.
Using above-mentioned preferred embodiment, be conducive to the globality of pedestal, convenient for the processing of pedestal.
Detailed description of the invention
Fig. 1 is the partial sectional view of union of the present invention and clamp device assembly；
Fig. 2 is Section A-A figure in Fig. 1；
Fig. 3 is movable joint structure schematic diagram of the present invention；
Fig. 4 is Section A-A figure in Fig. 3；
Fig. 5 is clamp device structural schematic diagram of the present invention；
Fig. 6 is Section A-A figure in Fig. 5.
Wherein, 1- connector, 2- nut, 3- sealing ring, 4- pipeline, 5- slotted bracket, 6- connecting rod, 7- connecting plate, 8- card
Pin hole, 9- worm screw, 10- bayonet lock, 11- through-hole, 12- clamping lever.
Specific embodiment
The invention will be further described with embodiment for explanation with reference to the accompanying drawing, and mode of the invention includes but not only limits
In following embodiment.
Embodiment 1
A kind of pipe union convenient for fastening, as shown in Figs 1-4, two connectors 1 connected including nut 2 with nut, two
The connector connecting pin of a connector 2 is internally provided with sealing ring 3, and internal screw thread is arranged in the piping connection end of the connector 1, described
Nut 2 is cylinder, and outer surface is provided with turbo tooth.Pipe union in the present embodiment, including nut 2, the nut 2 are used
In connecting two connectors 1, the piping connection end of the connector 1 is connect by the internal screw thread of setting with pipeline 4, two connectors
1 is linked together by nut 2, and the connector connecting pin of two connectors 1 is internally provided with sealing ring 3, makes two connectors 1
End face seal is realized using sealing ring 3 in the inside of coupling part, and the nut 2 is cylinder, and outer surface is provided with turbo tooth, can
To realize the fastening of nut 2 by the way that the worm screw engaged 9 is arranged on turbo tooth, fastening position in nut 2 by directly tightening
Admittedly being changed to worm screw 9 to fasten indirectly, therefore, worm screw 9 can stretch out narrow position, by adjusting the length of worm screw 9 to facilitate spiral shell
Mother 2 fastening, therefore using turbine and worm fastening make fastening when action direction change, therefore can with effective solution because
Spatial position is limited the problem of causing connector that can not fasten, and is conducive to the limited space connector fastening of operation and uses at the same time
Turbine and worm fastening, due to the particularity of its power transmission, nut fasten when torsion do not impact, Tightening moment is steady, can avoid because
Impact causes the breakage of inner seal rings, while can also make sealing ring uniform force in nut fastening, reaches preferably close
Seal effect.
Embodiment 2
Based on the above embodiment 1, it is hexagon outside the connector 1 shown in Fig. 3 such as Fig. 1.It is adopted outside the present embodiment center tap 1
With hexagon, prevent connector 1 from connecting with pipeline 4 and rotation when connector nut 2 fastens, at the same time, not by 2 circumference of nut
The limitation of position can realize the fastening of butt joint 1 in the 2 any position in inside of nut.It is other not describe in the present embodiment
Content is same as the previously described embodiments, and details are not described herein again.
Embodiment 3
Based on the above embodiment 1, such as Fig. 1, shown in Fig. 3, the connector connecting pin of the connector 1 is internally provided with boss, described convex
Sealing ring 3 is cased on platform.Setting boss can be realized close by 3 sets of sealing ring on boss inside the connector connecting pin of connector 1
The end face of the installation of seal 3, the connector connecting pin of connector 1 is contacted with sealing ring 3, thus when two connectors 1 nut 2 fastens
When, realize the end face seal of the connector connecting pin of two connectors 1.Therefore, it is arranged inside connector 1 convenient for sealing ring 3.This implementation
In example, other contents not described are same as the previously described embodiments, and details are not described herein again.
Embodiment 4
It is a kind of for fastening the clamp device for being convenient for the pipe union of fastening, as shown in Fig.1 and Fig.2, including removable with pipeline 4
The pedestal of connection is unloaded, the pedestal is equipped with the worm screw 9 with the nut turbine tooth engagement.Clamp device packet in the present embodiment
It includes the pedestal being detachably connected with pipeline 4 to connect with worm screw 9, pedestal can be mounted on pipeline 4, made outside worm screw 9 and nut 2
The turbine tooth engagement contact of surface setting, rotary worm 9 then realize the fastening of nut 2；When needing to dismantle union, reversely
Rotary worm 9, so that it may unclamp nut 2；It, can be by clamp device from pipeline 4 after the completion of union fastens or dismantles
It disassembles, above-mentioned clamp device, it is small relative to the occupied spatial position of the fastening tools such as fork spanner, and worm screw 9 can prolong
It is born that operator is facilitated to rotate, therefore, suitable for fastening of the union at narrow position.
Embodiment 5
Based on the above embodiment 4, such as Fig. 1, Fig. 2, Fig. 5, shown in Fig. 6, the pedestal includes two slotted brackets 5, described in two
The connection of 5 top of slotted bracket is provided with symmetrical connecting plate 7 in two connecting rods 6, described in two there are two connecting rod 6
Connecting plate 7 and worm screw 9 are sequentially connected, the turbine tooth engagement of the worm screw 9 and nut 2；The lower part groove profile of the slotted bracket 5 is opened
Mouth size is more than or equal to 4 outer diameter size of pipeline, and the lower part groove profile opening of the slotted bracket 5 is provided with solid with pipeline 4
Surely the fastener connected.The present embodiment is a kind of clamp device structure, including the pedestal being detachably connected with pipeline 4, the bottom
Seat includes two slotted brackets 5, and 5 top of slotted bracket is connected with symmetrical two connecting rods 6, is provided in connecting rod 6
Symmetrical connecting plate 7, connecting plate 7 and worm screw 9 are rotatablely connected, and 5 lower openings size of slotted bracket is more than or equal to pipeline 4
Outer diameter, and 5 lower openings two sides of slotted bracket are additionally provided with fastener, and the opening of slotted bracket 5 is erected on pipeline 4, is adjusted
The position of good worm screw 9 contacts it with the turbine tooth engagement on 2 surface of nut, by 5 lower openings two sides of slotted bracket after mixing up
Fastener fastening, that is, complete the installation of clamp device.Clamp device structure in the present embodiment is simple, and clamp device fastens spiral shell
It when female, occupies little space, suitable for the fastening of narrow position union, and after completing union fastening, it may be convenient to will
Fastening device is disassembled from pipeline.In the present embodiment, other contents not described are same as the previously described embodiments, herein no longer
It repeats.
Embodiment 6
Based on the above embodiment 5, such as Fig. 1, Fig. 2, Fig. 5, shown in Fig. 6, the fastener includes bayonet lock 10, the slotted bracket 5
Lower part slot-type openings two sides be equipped with pin hole 8, the bayonet lock 10 is connected to two pin holes 8.When by 5 lower part of slotted bracket
Opening is when being erected on pipeline 4, and bayonet lock 10 passes through to the pin hole 8 of 5 lower part two sides of slotted bracket, bayonet lock 10 just with pipeline 4
Contact, to realize the fastening of pedestal, which can quickly and easily be loaded and unloaded clamp device on pipeline, and tight
Element used in firmware is simple, is easy to make and is easy replacement.In the present embodiment, other contents not described and above-described embodiment phase
Together, details are not described herein again.
Embodiment 7
Based on the above embodiment 5, such as Fig. 2, Fig. 5, shown in Fig. 6, being provided in one of them described connection 7 allows worm screw 9 to pass through
Through-hole 11, described 9 one end of worm screw pass through through-hole 11 be provided with clamping lever 12.Extend worm screw 9 and connect clamping lever 12, snail can be made
Bar 9 lengthens the fastening to facilitate nut 2 according to the actual situation.In the present embodiment, other contents not described and above-described embodiment
Identical, details are not described herein again.
Embodiment 8
Based on the above embodiment 7, the fastening, 12 are equipped with sleeve barrel tool.Sleeve barrel tool on clamping lever 12 facilitates artificial
It holds, thus the convenient artificial operation for carrying out rotary worm 9, to facilitate the fastening of union nut.It is other in the present embodiment
The content not described is same as the previously described embodiments, and details are not described herein again.
Embodiment 9
Based on the above embodiment 5, such as Fig. 1, Fig. 2, Fig. 5, shown in Fig. 6, the slotted bracket 5 is integrally formed with connecting rod 6.Pedestal
It is integrally formed, can be improved the globality of pedestal, and be convenient for the processing of pedestal.In the present embodiment, other contents not described with
Above-described embodiment is identical, and details are not described herein again.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.The present invention expands to any new feature disclosed in the present specification or any
New combination, and disclose any new method or process the step of or any new combination.
Claims (9)
1. a kind of pipe union convenient for fastening, two connectors connected including nut with nut, the connector of two connectors
Connecting pin is internally provided with sealing ring, and internal screw thread is arranged in the piping connection end of two connectors, which is characterized in that the nut
For cylinder, outer surface is provided with turbo tooth.
2. a kind of pipe union convenient for fastening according to claim 1, which is characterized in that the connector exterior is six
It is rectangular.
3. a kind of pipe union convenient for fastening according to claim 1, which is characterized in that the connector of the connector connects
It connects end and is internally provided with boss, be cased with sealing ring on the boss.
4. a kind of clamp device that the pipe union for described in claim any one of 1-3 convenient for fastening fastens, feature
It is, including the pedestal being detachably connected with pipeline, the pedestal is equipped with the snail with the nut outer surfaces turbine tooth engagement
Bar.
5. a kind of clamp device for the pipe union fastening convenient for fastening according to claim 4, feature exist
In,
The pedestal includes two slotted brackets, and there are two connecting rod, two companies for two slotted bracket top connections
Symmetrical connecting plate is provided on extension bar, two connecting plates are connect with worm-drive, the worm screw and nut outer surfaces
Turbine tooth engagement；The lower part groove profile opening size of the slotted bracket is more than or equal to outer diameter tube size, the groove profile branch
The lower part groove profile opening of frame is provided with the fastener being fixedly connected with pipeline.
6. a kind of clamp device for the pipe union fastening convenient for fastening according to claim 5, feature exist
In the fastener includes bayonet lock, and the lower part slot-type openings two sides of the slotted bracket are equipped with pin hole, the bayonet lock connection two
A pin hole.
7. a kind of clamp device for the pipe union fastening convenient for fastening according to claim 5, feature exist
In being provided on one of them described connecting plate allows the through-hole that passes through of worm screw, and described worm screw one end passes through through-hole and is provided with tightly
Gu handle.
8. a kind of clamp device for the pipe union fastening convenient for fastening according to claim 7, feature exist
In the clamping lever is equipped with sleeve barrel tool.
9. a kind of clamp device for the pipe union fastening convenient for fastening according to claim 5, feature exist
In the slotted bracket and connecting rod are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910387894.7A CN110159847A (en) | 2019-05-10 | 2019-05-10 | A kind of pipe union and clamp device convenient for fastening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910387894.7A CN110159847A (en) | 2019-05-10 | 2019-05-10 | A kind of pipe union and clamp device convenient for fastening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110159847A true CN110159847A (en) | 2019-08-23 |
Family
ID=67634070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910387894.7A Pending CN110159847A (en) | 2019-05-10 | 2019-05-10 | A kind of pipe union and clamp device convenient for fastening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110159847A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728235A (en) * | 2020-12-29 | 2021-04-30 | 长春中车轨道车辆有限公司 | Construction method for preventing leakage of rubber gasket sealing part of brake pipe system |
| CN114524423A (en) * | 2022-03-16 | 2022-05-24 | 山东永达环保科技有限公司 | Regenerating device for pickling waste phosphoric acid by chemical method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202934499U (en) * | 2012-09-27 | 2013-05-15 | 忻州职业技术学院 | Screw clamp for screwing pipeline longitudinally |
| CN203230982U (en) * | 2013-03-15 | 2013-10-09 | 诸暨市阮冷管业有限公司 | Movable joint |
| CN207334020U (en) * | 2017-08-03 | 2018-05-08 | 中车唐山机车车辆有限公司 | A kind of pipeline connecting parts |
| CN207333789U (en) * | 2017-08-11 | 2018-05-08 | 浙江鑫东洁具有限公司 | A kind of valve being easy for installation and maintenance |
| CN208575781U (en) * | 2018-02-11 | 2019-03-05 | 周庆武 | Small space union fastener |
| CN210196701U (en) * | 2019-05-10 | 2020-03-27 | 中车成都机车车辆有限公司 | Pipeline union convenient to fasten and fastening device |
-
2019
- 2019-05-10 CN CN201910387894.7A patent/CN110159847A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202934499U (en) * | 2012-09-27 | 2013-05-15 | 忻州职业技术学院 | Screw clamp for screwing pipeline longitudinally |
| CN203230982U (en) * | 2013-03-15 | 2013-10-09 | 诸暨市阮冷管业有限公司 | Movable joint |
| CN207334020U (en) * | 2017-08-03 | 2018-05-08 | 中车唐山机车车辆有限公司 | A kind of pipeline connecting parts |
| CN207333789U (en) * | 2017-08-11 | 2018-05-08 | 浙江鑫东洁具有限公司 | A kind of valve being easy for installation and maintenance |
| CN208575781U (en) * | 2018-02-11 | 2019-03-05 | 周庆武 | Small space union fastener |
| CN210196701U (en) * | 2019-05-10 | 2020-03-27 | 中车成都机车车辆有限公司 | Pipeline union convenient to fasten and fastening device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728235A (en) * | 2020-12-29 | 2021-04-30 | 长春中车轨道车辆有限公司 | Construction method for preventing leakage of rubber gasket sealing part of brake pipe system |
| CN114524423A (en) * | 2022-03-16 | 2022-05-24 | 山东永达环保科技有限公司 | Regenerating device for pickling waste phosphoric acid by chemical method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110159847A (en) | A kind of pipe union and clamp device convenient for fastening | |
| CN104763855A (en) | Adjustable pipe connection device | |
| CN204573454U (en) | Self-sealing expansion is swollen plug | |
| CN104006244A (en) | Anti-detaching pipe connection device and air conditioner | |
| KR101849492B1 (en) | Blind flange having an opening and shutting device | |
| JP6133762B2 (en) | Flange joint reinforcement jig | |
| CN109458506B (en) | Flange connecting device | |
| CN202327077U (en) | Temporary plugging device of pressure container or pipeline | |
| CN109268592B (en) | Connecting device suitable for transformer oil drain valve | |
| CN210196701U (en) | Pipeline union convenient to fasten and fastening device | |
| CN108061216B (en) | Pipeline plugging tool with pressure relief structure | |
| CN212929050U (en) | Manual valve convenient to dismantle | |
| CN207178977U (en) | A kind of straight pin pipe connecting device | |
| CN209213250U (en) | A kind of Quick Connect Kit of mesohigh water pipe | |
| JPH11125245A (en) | Fluid joint | |
| CN2498434Y (en) | Pipe connector with fastening screw nut | |
| CN213236562U (en) | Pipeline end-touching plugging device | |
| GB2461071A (en) | Compression pipe coupling tightened by tangential bolt | |
| KR200331307Y1 (en) | Flange type expansion coupling | |
| KR960010263Y1 (en) | End chuck of pipe for leak test | |
| CN218094827U (en) | Hose joint | |
| CN215847870U (en) | Multi-angle pipe joint assembling and disassembling tool | |
| CN2438905Y (en) | Grip pressing internal sealing pipe joint | |
| CN219712589U (en) | Anti-loosening device for movable joint of pipeline | |
| CN2040210U (en) | Pipe-abutting parts for rush repair |
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 | ||
| CB02 | Change of applicant information |
Address after: 610000 No.527, Shimu Road, Xindu District, Chengdu, Sichuan Province Applicant after: CRRC CHENGDU CO., LTD. Address before: 610000 Sichuan city of Chengdu province Chenghua District Second Bridge Road No. 31 Applicant before: CRRC CHENGDU CO., LTD. |
|
| CB02 | Change of applicant information |