CN206189457U - Piping lane and waterproof node thereof - Google Patents

Piping lane and waterproof node thereof Download PDF

Info

Publication number
CN206189457U
CN206189457U CN201621175943.9U CN201621175943U CN206189457U CN 206189457 U CN206189457 U CN 206189457U CN 201621175943 U CN201621175943 U CN 201621175943U CN 206189457 U CN206189457 U CN 206189457U
Authority
CN
China
Prior art keywords
piping lane
tube coupling
groove
concatenation
tongue
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.)
Active
Application number
CN201621175943.9U
Other languages
Chinese (zh)
Inventor
向辉兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhuyou Zhizao Technology Investment Co., Ltd
Original Assignee
China Mingsheng Drawin Technology Investment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Mingsheng Drawin Technology Investment Co Ltd filed Critical China Mingsheng Drawin Technology Investment Co Ltd
Priority to CN201621175943.9U priority Critical patent/CN206189457U/en
Application granted granted Critical
Publication of CN206189457U publication Critical patent/CN206189457U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The utility model belongs to municipal architecture engineering field discloses the waterproof node of a piping lane, including the two pipe joint festivals of adjacent setting, the two pipe joints festival of adjacent setting adopts the tongue -and -groove concatenation, at least one side of two pipe joints festival concatenation end is equipped with the chamfer and through the mortar shutoff, is equipped with sealing gasket, a lesson at least in the concatenation seam of opposite side the concatenation end of tube coupling is equipped with the injected hole, waterproof slurry has been filled in the concatenation seam. The utility model discloses the scene adopts the mortar shutoff to replace the template caulking joint, can practice thrift the raw and other materials piping lane and set up the chamfer, increase the contact cotton knot of mortar and piping lane lateral part, and then the adhesion stress of seam crossing is being pieced together to the increase mortar, the mode that adopts grout to caulk combines with sealing gasket, the waterproof synergism of implementation structure and physics, setting up of tongue -and -groove makes secret water transfer route increase simultaneously, increased simultaneously that dabbling waterproof slurry measure in the concatenation and with the area of contact of tube coupling concatenation, increase water -proof effects.

Description

A kind of piping lane and its waterproofing node
Technical field
The utility model belongs to civic building engineering field, and in particular to a kind of piping lane and its waterproofing node.
Background technology
Underground pipe gallery as subterranean tunnel space structure, by level of ground water height, soil property, upper sides load variations shadow Ring, for the underground pipe gallery of cast-in-place mode, rigidity is big, year will be long afterwards because uneven settlement of foundation will make Pipe rack longitudinal direction occur Deformation, will also cause cross section crack occur and thus trigger a series of problem of durability and security when serious;Using pre- The assembled pipe gallery of system can to a certain extent reduce Pipe rack longitudinal rigidity, reduce the influence of uneven settlement of foundation, but It is that precast assembly produces substantial amounts of splicing seams, traditional piping lane waterproof type is the seam that waterproof material is placed in pipe gallery Place, tends to twist in its seam crossing due to piping lane, the various modifications such as warpage, when torsional deformation occurs larger, Easily ftractureed from seam crossing, so as to cause pipe gallery waterproof failure, and the water resistance time limit of conventional waterproof material is limited, Such as water proof rubber bar, easy aging forfeiture water-proof function after the several years.
In sum, a kind of applicability of exploitation is needed badly extensively, easy construction can limited raising piping lane water resistance waterproof section Point.
Utility model content
It is wide that the purpose of this utility model is to provide a kind of applicability, easy construction, can limited raising piping lane water resistance prevent Water node and the piping lane including above-mentioned waterproofing node.
Above-mentioned purpose is to be achieved through the following technical solutions:A kind of waterproofing node of piping lane, including two sections being disposed adjacent Tube coupling, the 2-section pipe section being disposed adjacent is spliced using tongue and groove, and at least side of the 2-section pipe section splice ends is provided with chamfering And blocked by mortar, water-proof sealing strip is provided with the splicing seams of opposite side, the splice ends of at least one section tube coupling are provided with note Slurry hole, waterproofing slurry is perfused with the splicing seams.In tube coupling prefabrication process, tongue and groove, chamfering and injected hole, piping lane are precast On-site hoisting splicing sets water-proof sealing strip in the side of the splicing seams away from chamfering, the setting chamfering of piping lane splice ends Side forms recess at splicing seams, and splicing seams are carried out into caulking joint by spreading high-strength mortar in recess, then by note Slurry hole irrigates waterproofing slurry in splicing seams.In this way, scene replaces template caulking joint using mortar closure, can save material piping lane Chamfering is set, increases the mortar cotton knot of the contact with piping lane sidepiece, and then increase cohesive force of the mortar at splicing seams;Using grouting The mode of joint filling, is combined with water-proof sealing strip, realizes the synergy of structure and physics waterproof, while the setting of tongue and groove makes underground Water transport path increases, while the waterproofing slurry that increased perfusion is measured and the contact area with tube coupling Mosaic face in splicing, Increase waterproof effect.
Further, the injected hole is the bellows being embedded in the tube coupling, and the bellows connects the splicing of tube coupling Face and medial surface.In this way, slip casting hole forming is simple, injected hole is pre-formed to avoid assembled process tube coupling from subsequently drilling to piping lane Structure is damaged, while the operation of site operation can be saved, shortens construction period.
Further, at least it is provided with groove at the Mosaic face of bellows connection.It is arranged such, splicing seams set groove to be had One increase mouth, space herein increases the circulation for being conducive to waterproofing slurry, and waterproofing slurry has enough flowing spaces, carries when flowing Grouted density high, while contact cotton knot of the waterproofing slurry with Mosaic face can be increased, increases the cohesive force of the two.
Further, the water-proof sealing strip is water-swellable elastic rubber strip.Water-swellable elastic rubber strip waterproof effect Good, ageing resistance is strong.
Further, one end of the tube coupling is provided with tenon, and the other end is provided with tongue-and-groove, and the 2-section pipe section being disposed adjacent exists Tongue and groove splicing is formed in the tenon insertion tongue-and-groove of splice ends.
Further, the tube coupling for setting injected hole is provided with slurry outlet, and the slurry outlet is located at the top of injected hole.Slurry outlet Set, be conducive to the discharge of air, it is ensured that the circulation of waterproofing slurry, while be conducive to judging the completion of slip casting, when slip casting is complete Cheng Hou, preferably clogs sealing with stopper by injected hole and slurry outlet.
Further, the tube coupling is longitudinally provided with prestressing force and wears muscle hole, and the prestressing force is equipped with presstressed reinforcing steel in wearing muscle hole. In this way, carrying out tensioning by prefabricated tube coupling by using prestress wire so that the prefabricated tube coupling of longitudinally disposed more piece with And prefabricated intermediate plate is closely coupled, between reducing as far as possible between longitudinally disposed prefabricated tube coupling and between prefabricated intermediate plate Gap so that its Mosaic face is closely adjacent to, improves the globality and water proofing property of piping lane.
Further, the prestressing force wears muscle hole and is arranged at the base plate of the tube coupling and the inside angle part of side plate junction.
To reach above-mentioned purpose, the utility model also provides a kind of piping lane, and the tube coupling by the two section above is assembled, including The waterproofing node of the piping lane described at least one above-mentioned any one.The piping lane waterproof effect that the utility model is provided.
Further, the piping lane is divided into multiple pipe rooms, and at least one pipe room is drip chamber, and the top of the drip chamber is filter Net, the drip chamber is located at the bottom of the piping lane.Carried out in this way, can prevent piping lane reclaimed water is separated in time when water is leaked Discharge, it is to avoid all kinds of pipelines and the normal of equipment are used in water influence piping lane.
Brief description of the drawings
The accompanying drawing for constituting a part of the present utility model is used for providing being further understood to of the present utility model, and this practicality is new The schematic description and description of type is used to explain the utility model, does not constitute to improper restriction of the present utility model.
Fig. 1 is the schematic diagram of the piping lane waterproofing node involved by a kind of implementation method of the utility model;
Fig. 2 is the Mosaic face schematic diagram of the tube coupling involved by a kind of implementation method of the utility model;
Fig. 3 is the lateral plate structure schematic diagram of the tube coupling involved by a kind of implementation method of the utility model.
In figure:
The water-proof sealing strip of 1 tube coupling, 2 tongue and groove, 3 splicing seams 4
The injected hole of 5 chamfering, 6 mortar, 7 waterproofing slurry 8
The tongue-and-groove of 9 slurry outlet, 10 groove, 11 tenon 12
13 prestressing force wear muscle hole
Specific embodiment
The utility model is described in detail below in conjunction with the accompanying drawings, the description of this part be only it is exemplary and explanatory, There should not be any restriction effect to protection domain of the present utility model.Additionally, those skilled in the art's retouching according to presents State, respective combination can be carried out to the feature in embodiment in presents and in different embodiments.
The utility model embodiment is as follows, reference picture 1 and Fig. 3, a kind of waterproofing node of piping lane, including two for being disposed adjacent Section tube coupling 1, the 2-section pipe section 1 being disposed adjacent is spliced using tongue and groove 2, and at least side of the splice ends of 2-section pipe section 1 sets There is chamfering 5 and blocked by mortar 6, water-proof sealing strip 4, the spelling of at least one section tube coupling 1 are provided with the splicing seams 3 of opposite side Connect end and be provided with injected hole 8, waterproofing slurry 7 is perfused with the splicing seams 3.In the prefabrication process of tube coupling 1, tongue and groove 2, chamfering is precast 5 and injected hole 8, piping lane on-site hoisting splicing sets water-proof sealing strip 4, pipe in the side of the splicing seams 3 away from chamfering 5 The side of the setting chamfering 5 of corridor splice ends forms recess at splicing seams 3, will be spelled by spreading high-strength mortar 6 in recess Seam 3 carries out caulking joint, and waterproofing slurry 7 is then irrigated in splicing seams 3 by injected hole 8.In this way, scene is blocked using mortar 6 Instead of template caulking joint, the piping lane that can save material sets chamfering 5, increases the cotton knot of the contact with piping lane sidepiece of mortar 6, and then increase Cohesive force of the mortar 6 at splicing seams 3;By the way of joint filling of being in the milk, combined with water-proof sealing strip 4, realized structure and physics The synergy of waterproof, while the setting of tongue and groove 2 increases underground water bang path, while increased the waterproofing slurry 7 of perfusion Amount and the contact area with the Mosaic face of tube coupling 1 in splicing, increase waterproof effect.
On the basis of above-described embodiment, in another embodiment of the present invention, such as Fig. 1, the injected hole 8 is described to be embedded in Bellows in tube coupling 1, the bellows connects the Mosaic face and medial surface of tube coupling 1.In this way, injected hole 8 is molded simply, slip casting Hole 8 is pre-formed to avoid the follow-up drilling of assembled process tube coupling 1 from damaging Pipe rack, while site operation can be saved Operation, shortens construction period.
On the basis of above-described embodiment, in another embodiment of the present invention, such as Fig. 1~3, the spelling at least being connected in bellows Groove 10 is provided with junction.It is arranged such, splicing seams 3 are set an increase mouthful at groove 10, space increase herein is conducive to The circulation of waterproofing slurry 7, waterproofing slurry 7 has enough flowing spaces when flowing, Grouted density is improved, while waterproof can be increased Contact cotton knot of the slurry 7 with Mosaic face, increases the cohesive force of the two.
On the basis of above-described embodiment, in another embodiment of the present invention, the water-proof sealing strip 4 is water-swellable elasticity Rubber strip.Water-swellable elastic rubber strip good water-proof effect, ageing resistance is strong.
On the basis of above-described embodiment, in another embodiment of the present invention, such as Fig. 1 and Fig. 3, one end of the tube coupling 1 sets There is tenon 11, the other end is provided with tongue-and-groove 12, and the 2-section pipe section 1 being disposed adjacent is in the insertion tongue-and-groove 12 of tenon 11 of splice ends Tongue and groove 2 is formed to splice.
On the basis of above-described embodiment, in another embodiment of the present invention, such as Fig. 1~3, the tube coupling 1 for setting injected hole 8 sets There is slurry outlet 9, the slurry outlet 9 is located at the top of injected hole 8.The setting of slurry outlet 9, is conducive to the discharge of air, it is ensured that anti- The circulation of water slurry 7, while be conducive to judging the completion of slip casting, after the completion of slip casting, preferably with stopper is by injected hole 8 and goes out Slurry hole 9 clogs sealing.
On the basis of above-described embodiment, in another embodiment of the present invention, such as Fig. 2, the longitudinal direction of the tube coupling 1 is provided with prestressing force Muscle hole 13 is worn, the prestressing force is equipped with presstressed reinforcing steel in wearing muscle hole 13.In this way, by using prestress wire by pre- Tubulation section 1 carries out tensioning so that the prefabricated tube coupling 1 of longitudinally disposed more piece and prefabricated intermediate plate are closely coupled, subtract as far as possible Gap between few longitudinally disposed prefabricated tube coupling 1 and between prefabricated intermediate plate so that its Mosaic face is closely adjacent to, improves pipe The globality and water proofing property of corridor.
On the basis of above-described embodiment, in another embodiment of the present invention, such as Fig. 2, the prestressing force is worn muscle hole 13 and is set In the base plate and the inside angle part of side plate junction of the tube coupling 1.
To reach above-mentioned purpose, the utility model also provides a kind of piping lane, and the tube coupling 1 by the two section above is assembled, bag Include the waterproofing node of the piping lane described at least one above-mentioned any one.The piping lane waterproof effect that the utility model is provided.
On the basis of above-described embodiment, in another embodiment of the present invention, the piping lane is divided into multiple pipe rooms, at least one Pipe room is drip chamber, and the top of the drip chamber is filter screen, and the drip chamber is located at the bottom of the piping lane.In this way, can prevent Occur separating piping lane reclaimed water in time when water is leaked and discharge, it is to avoid all kinds of pipelines and the normal of equipment make in water influence piping lane With.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and Retouching also should be regarded as protection domain of the present utility model.

Claims (10)

1. a kind of waterproofing node of piping lane, including the 2-section pipe section being disposed adjacent, it is characterised in that two sections being disposed adjacent Tube coupling is spliced using tongue and groove, and at least side of the 2-section pipe section splice ends is provided with chamfering and is blocked by mortar, opposite side Water-proof sealing strip is provided with splicing seams, the splice ends of at least one section tube coupling are provided with injected hole, are perfused with the splicing seams Waterproofing slurry.
2. the waterproofing node of piping lane according to claim 1, it is characterised in that the injected hole is to be embedded in the tube coupling In bellows, the bellows connects the Mosaic face and medial surface of tube coupling.
3. the waterproofing node of piping lane according to claim 2, it is characterised in that at least at the Mosaic face of bellows connection It is provided with groove.
4. the waterproofing node of piping lane according to claim 3, it is characterised in that the water-proof sealing strip is water-swellable bullet Property rubber strip.
5. the waterproofing node of piping lane according to claim 3, it is characterised in that one end of the tube coupling is provided with tenon, separately One end is provided with tongue-and-groove, and the 2-section pipe section being disposed adjacent forms tongue and groove splicing in the tenon insertion tongue-and-groove of splice ends.
6. the waterproofing node of piping lane according to claim 3, it is characterised in that the tube coupling for setting injected hole is provided with pulp Hole, the slurry outlet is located at the top of injected hole.
7. the waterproofing node of the piping lane according to claim 1~6 any one, it is characterised in that the tube coupling longitudinally sets There is prestressing force to wear muscle hole, the prestressing force is equipped with presstressed reinforcing steel in wearing muscle hole.
8. the waterproofing node of piping lane according to claim 7, it is characterised in that the prestressing force wear muscle hole be arranged at it is described The base plate of tube coupling and the inside angle part of side plate junction.
9. a kind of piping lane, assembled by two tube couplings for saving the above, it is characterised in that including at least one claim 1~8 times The waterproofing node of the piping lane described in meaning one.
10. piping lane according to claim 9, it is characterised in that the piping lane is divided into multiple pipe rooms, and at least one pipe room is Drip chamber, the top of the drip chamber is filter screen, and the drip chamber is located at the bottom of the piping lane.
CN201621175943.9U 2016-11-02 2016-11-02 Piping lane and waterproof node thereof Active CN206189457U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621175943.9U CN206189457U (en) 2016-11-02 2016-11-02 Piping lane and waterproof node thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621175943.9U CN206189457U (en) 2016-11-02 2016-11-02 Piping lane and waterproof node thereof

Publications (1)

Publication Number Publication Date
CN206189457U true CN206189457U (en) 2017-05-24

Family

ID=58732200

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621175943.9U Active CN206189457U (en) 2016-11-02 2016-11-02 Piping lane and waterproof node thereof

Country Status (1)

Country Link
CN (1) CN206189457U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108867697A (en) * 2018-08-31 2018-11-23 江苏金贸科技发展有限公司 A kind of concrete prefabricated piping lane with antiseep preset structure
CN109667352A (en) * 2019-01-16 2019-04-23 中南大学 Assembled architecture prefabricated panel vertical abutment joint grouting method Alveolus type waterproof connecting structure
CN109798126A (en) * 2019-02-28 2019-05-24 西南交通大学 Prefabricated block, prefabricated tunnel unit, tunnel structure and construction method
CN113136892A (en) * 2021-05-18 2021-07-20 中国五冶集团有限公司 Pipe joint splicing device, splicing structure and splicing method of assembly type pipe gallery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108867697A (en) * 2018-08-31 2018-11-23 江苏金贸科技发展有限公司 A kind of concrete prefabricated piping lane with antiseep preset structure
CN109667352A (en) * 2019-01-16 2019-04-23 中南大学 Assembled architecture prefabricated panel vertical abutment joint grouting method Alveolus type waterproof connecting structure
CN109798126A (en) * 2019-02-28 2019-05-24 西南交通大学 Prefabricated block, prefabricated tunnel unit, tunnel structure and construction method
CN113136892A (en) * 2021-05-18 2021-07-20 中国五冶集团有限公司 Pipe joint splicing device, splicing structure and splicing method of assembly type pipe gallery

Similar Documents

Publication Publication Date Title
CN206189457U (en) Piping lane and waterproof node thereof
CN105951859B (en) Base pit dewatering well wears concrete of basement bottom plate closure sealing construction processing method
CN105220713B (en) The waterproof construction of outer wall of basement subsiding crack
CN206722878U (en) A kind of mining light-duty filling counterfort
CN206189455U (en) Piping lane
CN102561402B (en) Treatment method for construction joint between top plate and wall of individual underground civil air defense project constructed by covered top-down excavation method
CN207597428U (en) Prefabricated piping lane is connected waterproof construction with cast-in-place piping lane
CN109488371B (en) Waterproof system of full-enclosed waterproof station and dynamic setting and quantity-limiting drainage method
CN205917610U (en) Prefabricated assembled concrete box culvert
CN106049551B (en) Pipe gallery boss sealing structure
CN206143804U (en) Prefabricated socket joint formula waterproof construction of assembling utility tunnel tube coupling
CN107859064A (en) A kind of prefabricated piping lane is connected waterproof construction and construction method with cast-in-place piping lane
CN102839691B (en) Quick sealing method and device for sandless cement pipe deep well dewatering wellhead
CN206554042U (en) A kind of lining waterproof structure of seepage tunnel
CN106522959B (en) A kind of borehole wall steel construction waterproof connecting plate and its construction technology
CN108166532A (en) A kind of groutable underground continuous wall connector and its construction method
CN104846935B (en) Head-tank treating seepage remodeling method
CN106759485A (en) A kind of prefabricated piping lane of two-piece unit formula and installation method
CN206693265U (en) A kind of installation node of piping lane
CN101793027B (en) Core-grouted static pressure anchor rod pile
CN212479325U (en) Drainage system for construction joint of underground excavation tunnel
CN210194676U (en) Structure is assembled to prefabricated utility tunnel tube coupling of underground
CN109026083A (en) Big cross section rectangle pipe jacking tube coupling waterproof construction
CN208136954U (en) Precast splice type Pipe rack
CN207003602U (en) Urban discharging pipeline anti-leakage structure

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Assignee: China Civil Architecture Friends Technology (Jiaozhou) Co., Ltd.

Assignor: CHINA MINGSHENG DRAWIN TECHNOLOGY INVESTMENT CO., LTD.

Contract record no.: 2018430000023

Denomination of utility model: Piping lane and waterproof node thereof

Granted publication date: 20170524

License type: Common License

Record date: 20190102

EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Assignee: Nanning Zhongmin zhuyou Intelligent Manufacturing Technology Co., Ltd

Assignor: CHINA MINGSHENG DRAWIN TECHNOLOGY INVESTMENT CO., LTD.

Contract record no.: X2019430000004

Denomination of utility model: Piping lane and waterproof node thereof

Granted publication date: 20170524

License type: Common License

Record date: 20191105

EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Assignee: Xiangxi Zhongmin zhuyou Technology Co., Ltd

Assignor: CHINA MINGSHENG DRAWIN TECHNOLOGY INVESTMENT CO., LTD.

Contract record no.: X2020430000002

Denomination of utility model: Piping lane and waterproof node thereof

Granted publication date: 20170524

License type: Common License

Record date: 20200305

CP03 Change of name, title or address

Address after: 5 / F, office building 2, Zhongmin zhuyou Co., Ltd., No. 10, Zhongshi Road, shaping street, Kaifu District, Changsha City, Hunan Province, 410000

Patentee after: Zhuyou Zhizao Technology Investment Co., Ltd

Address before: 410205 comprehensive building in Hunan province Changsha Kaifu District, No. 30 Xingang Road, Changsha Jinxia bonded logistics center room 2005

Patentee before: CHINA MINGSHENG DRAWIN TECHNOLOGY INVESTMENT Ltd.

CP03 Change of name, title or address
EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Assignee: Nantong Zhongmin zhuyou Zhizao Technology Co., Ltd

Assignor: Zhuyou Zhizao Technology Investment Co., Ltd

Contract record no.: X2020980007488

Denomination of utility model: A pipe gallery and its waterproof joint

Granted publication date: 20170524

License type: Common License

Record date: 20201105

EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Assignee: Hunan Yuanfeng Construction Engineering Co.,Ltd.

Assignor: Zhuyou Zhizao Technology Investment Co., Ltd

Contract record no.: X2021980000884

Denomination of utility model: A pipe gallery and its waterproof joint

Granted publication date: 20170524

License type: Common License

Record date: 20210203

EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Assignee: Hunan Hailong Construction Engineering Co.,Ltd.

Assignor: Zhuyou Zhizao Technology Investment Co., Ltd

Contract record no.: X2021980001039

Denomination of utility model: A pipe gallery and its waterproof joint

Granted publication date: 20170524

License type: Common License

Record date: 20210207

EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Assignee: Henan fengque Construction Engineering Co.,Ltd.

Assignor: Zhuyou Zhizao Technology Investment Co., Ltd

Contract record no.: X2021980010621

Denomination of utility model: A pipe gallery and its waterproof node

Granted publication date: 20170524

License type: Common License

Record date: 20211019