CN106247034A - Spigot-and-socket steel bushing concrete pressure pipe - Google Patents
Spigot-and-socket steel bushing concrete pressure pipe Download PDFInfo
- Publication number
- CN106247034A CN106247034A CN201610887071.7A CN201610887071A CN106247034A CN 106247034 A CN106247034 A CN 106247034A CN 201610887071 A CN201610887071 A CN 201610887071A CN 106247034 A CN106247034 A CN 106247034A
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- Prior art keywords
- socket
- spigot
- wall
- steel bushing
- pipe
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Classifications
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- 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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/153—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and concrete with or without reinforcement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The present invention provides a kind of spigot-and-socket steel bushing concrete pressure pipe, relate to pipeline field, spigot-and-socket steel bushing concrete pressure pipe includes manometer tube body, manometer tube body includes inner wall tube and outer wall pipe, inner wall tube is provided with socket hoop and the socket ring that the socket joint that can cooperate connects, adjacent manometer tube body can be connected by socket hoop and socket ring socket joint, makes installation process convenient and swift；Using double wall pipe, central filler has reinforcement material, can bear higher intrinsic pressure bigger with opposing outer load, it is ensured that the service life of pipeline；And the many places of multiple anti-corrosion material are coated with use, improve pipeline corrosion protection ability further, extend pipeline service life, safe and reliable.
Description
Technical field
The present invention relates to pipeline field, in particular to a kind of spigot-and-socket steel bushing concrete pressure pipe.
Background technology
The development of steel pipe (Steel pipe) production technology starts from the manufacturing rise of bicycle, 19th century younger oil
Exploitation, naval vessel, boiler, the manufacture of aircraft during Two World Wars, the manufacture of apparatus of thermo-electric power boiler after World War II, change
Learn industrial expansion and the drilling of petroleum gas and transport etc., the most effectively promote Steel Tube Industries kind, yield and
Qualitative development.
Steel pipe is applied not only to conveyance fluid and powdery solid, exchange heat energy, manufactures machine components and container, it or one
Economic steel.Manufacture water-carriage system with steel pipe not only to save steel, simplify construction, and the face of stopping off can be greatly reduced
Long-pending, investment reduction and maintenance cost.
Steel pipe, is to be made by single steel matter and do internal and external anti-corrosive and the pipe that is fabricated to, is used for carrying water, oil, gas etc.
Fluid, is at home and abroad widely used.
Steel pipe can bear higher intrinsic pressure, but, it is relatively low that steel pipe bears external load ability, can only strengthen thickness of steel pipe and change
Kind its bears external load ability.In Practical Project case, increasing thickness of steel pipe, cost is high, opposing external load deformation energy
Power is the most weak.Steel pipe is embedded in underground or open-air atmosphere, the highest to outer wall requirement for anticorrosion, owing to being monolayer steel pipe, once sends out
Raw corrosion, affects engineering service life.Prior art steel pipe is usually straight tube structure, and steel pipe is adjacent tubes during construction and installation
Road connects needs butt welding at the construction field (site) also to make mouth of pipe anticorrosive coat, difficulty of construction greatly, costly, difficult quality guarantee；Connect
Head is rigid joint, and the ability resisting deformation is weak, is susceptible to rupture failure.Especially large-diameter steel pipe, due to its cost height, supports
Anti-external load ability, interface and anticorrosive quality are difficult to ensure that.
For current duct products kind, product selects single.
In prior art, exist can not bear compared with high internal pressure and external load ability simultaneously, construction and installation are loaded down with trivial details, use the longevity
The problem that life length and anti-corrosion capability lack.
Summary of the invention
It is an object of the invention to provide a kind of spigot-and-socket steel bushing concrete pressure pipe, to realize bearing relatively simultaneously
High internal pressure and external load ability, adjacent channel are easy for installation, length in service life and the strong purpose of anti-corrosion capability.
The present invention is achieved in that
A kind of spigot-and-socket steel bushing concrete pressure pipe, including manometer tube body, described manometer tube body includes inner wall tube
With outer wall pipe, described outer wall pipe box is located at the periphery of described inner wall tube, and described inner wall tube includes body, socket hoop and socket
Ring, described socket hoop and socket ring are respectively arranged at the axial two ends of described body, and described socket hoop and socket ring can phases
Socket joint is coordinated to connect mutually.
Further, the inner surface of described inner wall tube and the outer surface of described outer wall pipe are equipped with anticorrosive coat, described pressure
Socket hoop one end of tube body and socket ring one end are respectively provided with flexible water coating, table in described socket ring outer surface and socket hoop
Face is provided with corrosion-inhibiting coating.
Further, it is provided with girth member and keeper between described inner wall tube and described outer wall pipe.
Further, it is filled with reinforcement material between described inner wall tube and outer wall pipe.
Further, described socket hoop includes flat segments and to the close transition of described outer wall pipe, described flat segments with
Described inner wall tube is parallel with described outer wall pipe.
Further, the outer surface of described socket ring is provided with at least two circumferential groove, and the adjacent described hoop of each two is recessed
Only Jiao Tai it is provided with between groove.
Further, the central shaft of the vertical described spigot-and-socket steel bushing concrete pressure pipe of described circumferential groove, described extremely
Few two circumferential groove are parallel to each other.
Further, described only Jiao Tai is provided with installing hole, and described installing hole runs through described only Jiao Tai.
Further, it is provided with O-ring seal in described circumferential groove.
Further, described manometer tube body also includes that cathodic protection attachment means, described cathodic protection attachment means set
It is placed in the end of described outer wall pipe.
Hinge structure, the method have the advantages that a kind of spigot-and-socket steel bushing coagulation that the present invention provides
Soil pressure solenoid, including manometer tube body, manometer tube body includes inner wall tube and outer wall pipe, and inner wall tube is provided with the socket joint that can cooperate
The socket hoop connected and socket ring, make installation process convenient and swift；And employing double wall pipe, higher interior external pressure can be born.
For making the above-mentioned purpose of the present invention, feature and advantage to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Accompanying drawing explanation
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Generally implement with the present invention illustrated described in accompanying drawing herein
The assembly of example can be arranged with various different configurations and design.Therefore, reality to the present invention provided in the accompanying drawings below
The detailed description executing example is not intended to limit the scope of claimed invention, but is merely representative of the selected enforcement of the present invention
Example.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly falls into the scope of protection of the invention.
Fig. 1 shows the axial sectional view of a kind of manometer tube body that the present invention provides.
Fig. 2 shows the radial cross-section of a kind of manometer tube body that the present invention provides.
Fig. 3 shows the axial cross-sectional schematic of a kind of socket hoop that the present invention provides.
Fig. 4 shows the axial cross-sectional schematic of a kind of socket ring that the present invention provides.
Fig. 5 shows the structure of the socket joint junction of a kind of spigot-and-socket steel bushing concrete pressure pipe provided by the present invention
Schematic diagram.
Primary symbols illustrates:
100-manometer tube body；110-inner wall tube；111-body；113-socket hoop；1131-flat segments；1133-gradual change
Section；115-socket ring；1151-circumferential groove；1153-stops Jiao Tai；1155-installing hole；1157-O-ring seal；120-outer wall pipe；
121-cathodic protection attachment means；130-anticorrosive coat；140-flexible water coating；150-corrosion-inhibiting coating；160-girth member；170-
Keeper；180-reinforcement material.
Detailed description of the invention
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Generally exist
Can arrange and design with various different configurations with the assembly of the embodiment of the present invention that illustrates described in accompanying drawing herein.Cause
This, be not intended to limit claimed invention to the detailed description of the embodiments of the invention provided in the accompanying drawings below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment obtained on the premise of going out creative work, broadly falls into the scope of protection of the invention.
It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing
Individual accompanying drawing is defined, then need not it be defined further and explains in accompanying drawing subsequently.Meanwhile, the present invention's
In description, term " first ", " second " etc. are only used for distinguishing and describe, and it is not intended that indicate or hint relative importance.
Fig. 1 shows the axial sectional view of a kind of manometer tube body 100 that the embodiment of the present invention provided, and Fig. 2 shows
The radial cross-section of a kind of manometer tube body 100 provided by the present invention, as shown in Figure 1 and Figure 2, in manometer tube body 100 includes
Wall pipe 110 and outer wall pipe 120, inner wall tube 110 includes body 111, socket hoop 113 and socket ring 115, and outer wall pipe 120 is sheathed
In the periphery of inner wall tube 110, socket hoop 113 and socket ring 115 are respectively arranged at the body 111 of inner wall tube 110 along manometer tube originally
The two ends that body 100 is axial.
The manometer tube body 100 that the present embodiment provides also includes cathodic protection attachment means 121, cathodic protection attachment means
121 two ends axial along manometer tube body 100 being located at outer wall pipe 120.Cathodic protection attachment means 121 is used for electrically connecting external
Cathodic protection system, protection manometer tube body 100, not by electrochemical corrosion, improves pipeline corrosion protection ability further, extends pipeline
Service life, safe and reliable.
It is provided with girth member 160 He between inner wall tube 110 and the outer wall pipe 120 of the manometer tube body 100 that the present embodiment provides
Keeper 170, and it is filled with reinforcement material 180.
In the preferred embodiment of the present embodiment, girth member 160 is reinforcing bar.Optimally, structure concrete steel selected by girth member 160
Muscle.Because the height of reinforcing bar is bent ability by force intensity and stretch-proof, girth member 160 between inner wall tube 110 and outer wall pipe 120 with
Strengthen the intensity of the external and internal pressure that can bear of manometer tube body 100, make manometer tube body 100 more consolidate firm.
In the preferred embodiment of the present embodiment, keeper 170 is reinforcing bar, in the length of spacing manometer tube body 100
Meanwhile, strengthen the intensity of the external and internal pressure that can bear of manometer tube body 100 end, make manometer tube body 100 more firm
Firm.
In the preferred embodiment that the present embodiment provides, concrete selected by reinforcement material 180.Optimally, select intensity the lowest
Concrete in C40.The firm characteristic of concrete is in order to strengthen the anti-pressure ability of manometer tube body 100.And at inner wall tube 110
And the girth member 160 between outer wall pipe 120 and keeper 170, coordinate with reinforcement material 180 and be greatly reinforced manometer tube body
The voltage endurance capability of 100.Optimally, reinforcement material 180 selects concrete, girth member 160 to select distributing bar, and both form reinforcing bar
Concrete, to build more stable and firm manometer tube body 100.Therefore, the spigot-and-socket steel bushing coagulation that the present embodiment provides
Soil pressure solenoid can be born higher intrinsic pressure, can resist again external load and ensure that pipeline is indeformable.
Traditional pipeline configuration mostly is monolayer steel pipe, and its external and internal pressure that can bear is low and holds corrosion-vulnerable, can be serious
Affect the service life of pipeline.The manometer tube body 100 that the present embodiment provides uses inner wall tube 110 and the double-walled of outer wall pipe 120
Tubular construction, can the intensity of the external and internal pressure that can bear of intensified pressure tube body 100 and corrosion resistance significantly.Including and
Girth member 160, keeper 170 and reinforcement material 180 between wall pipe 110 and outer wall pipe 120 makes the anti-of manometer tube body 100
External and internal pressure ability is greatly enhanced；The employing of reinforcement material 180 not only strengthens manometer tube body 100 anti-external and internal pressure energy
Power, has also completely cut off contacting between inner wall tube 110 and the external world, makes inner wall tube 110 not corroded by external environment.Therefore, this reality
The spigot-and-socket steel bushing concrete pressure pipe that executing example provides can bear higher intrinsic pressure, can resist again external load and ensure pipeline not
Deformation.
The inner surface of inner wall tube 110 and the outer surface of outer wall pipe 120 of the manometer tube body 100 that the present embodiment provides are all provided with
Having anticorrosive coat 130, manometer tube body 100 is equipped with flexible water coating 140 at the end face of socket hoop 113 and socket ring 115, inserts
Choma 115 outer surface and socket hoop 113 inner surface are provided with corrosion-inhibiting coating 150, and flexible water coating 140 wraps up inner wall tube 110, outer
Reinforcement material 180 in the middle of wall pipe 120 and inner wall tube 110 and outer wall pipe 120.
In the preferred embodiment that the present embodiment provides, corrosion-inhibiting coating 150 is anti-corrosion material wear-resisting, corrosion resistant, to enter one
Step improves pipeline corrosion protection ability, extends pipeline service life, safe and reliable, and make socket joint connect seam more wear-resisting stable not
It is vulnerable to environmental corrosion.Optimally, corrosion-inhibiting coating 150 is high-end corrosion resistant coating.
In the preferred embodiment that the present embodiment provides, the anticorrosive coat 130 of outer wall pipe 120 outer surface is polyurethanes preserving timber
Material, but is not limited only to polyurethanes anti-corrosion material, it is also possible to for other weatherability corrosion-inhibiting coating, rotten by environment with protecting tube road
Erosion.The anticorrosive coat 130 of inner wall tube 110 inner surface is to meet the anti-corrosion material that sanitary standard of drinking water requires, it is ensured that conveying water quality peace
Complete reliable, tube wall is not corroded, further prolongation pipeline service life.
In the preferred embodiment that the present embodiment provides, flexible water coating is polyurethanes anti-corrosion material, but is not limited only to
Polyurethanes anti-corrosion material, it is also possible to there is the anti-corrosion material of flexibility for other, with protecting tube road end face reinforcement material 180 and
Manometer tube body 100, not by environmental corrosion, improves further pipeline corrosion protection ability, extends pipeline service life.Optimally, flexible
The thickness of waterproof coating is 1.5-2mm.
Fig. 3 shows the axial cross-sectional schematic of a kind of socket hoop 113 that the embodiment of the present invention provided, due to socket hoop
The axial sectional view of 113 is structure symmetrical above and below, and therefore, Fig. 3 illustrate only the structural representation of its top half.Such as Fig. 3 institute
Showing, the socket hoop 113 that the present invention provides includes flat segments 1131 and the close transition 1133 of outer wall pipe 120, flat segments
1131 is parallel with inner wall tube 110 and outer wall pipe 120.
In embodiments of the present invention, flat segments 1131 and the shape of transition 1133, transition 1133 outer wall pipe 120 lean on
Near distance and amplitude, the shape of all corresponding socket ring 115 in order to socket ring 115 and socket hoop 113 each other
Socket joint connects the tightst and suits.
Fig. 4 shows the axial cross-sectional schematic of a kind of socket ring 115 that the embodiment of the present invention provided, due to socket ring
The axial sectional view of 115 is structure symmetrical above and below, and therefore, Fig. 4 illustrate only the structural representation of its top half.Such as Fig. 4 institute
Showing, the end of the socket ring 115 that the embodiment of the present invention provides is provided with only glue platform 1153.Two circumferential groove 1151 parallel to each other
Being located at the outer surface of socket ring 115, circumferential groove 1151 is perpendicular to the central shaft of manometer tube body 100, and two circumferential groove
1151 both sides being respectively arranged at only glue platform 1153, only glue platform 1153 is additionally provided with installing hole 1155, and installing hole 1155 runs through only glue
Platform 1153.
In embodiments of the present invention, circumferential groove 1151 is two, but in other embodiments, the number of circumferential groove 1151
Amount can be not limited only to two, it is also possible to at least two, is provided with only Jiao Tai between two the most adjacent circumferential groove 1151
1153。
Fig. 5 shows the structure of the socket joint junction of a kind of spigot-and-socket steel bushing concrete pressure pipe provided by the present invention
Schematic diagram, as it is shown in figure 5, spigot-and-socket steel bushing concrete pressure pipe provided by the present invention can include multistage manometer tube body
100, it is closely fit with connection by socket hoop 113 and socket ring 115 between two sections of the most adjacent manometer tube bodies 100.By one
The socket ring 115 of joint manometer tube body 100 inserts in the socket hoop 113 of another adjacent joint manometer tube body, circumferential groove
Be provided with O-ring seal 1157 in 1151, by O-ring seal 1157 seal nipple, can make socket hoop 113 and socket ring 115 it
Between connection tightr.Decrease construction and installation scene boil on the nape opposite the mouth, welding and antiseptical problem, spigot-and-socket steel bushing concrete
The job site of manometer tube is quick and easy for installation.
After the spigot-and-socket steel bushing concrete pressure pipe that the present embodiment provides is installed, by the peace arranged on only glue platform 1153
Dress hole 1155 can carry out installing bulge test, the installation quality of quick test tube pipeline joint, improves the use peace of pipeline further
Entirely.
In sum, the spigot-and-socket steel bushing concrete pressure pipe that the present invention provides, including manometer tube body, manometer tube is originally
Body includes inner wall tube and outer wall pipe, and inner wall tube is provided with socket hoop and socket ring, the adjacent pressure that the socket joint that can cooperate connects
Tube body can be connected by socket hoop and socket ring socket joint, makes installation process convenient and swift；Use double wall pipe, central filler
There is reinforcement material, higher intrinsic pressure bigger with opposing outer load can be born, it is ensured that the service life of pipeline；And multiple preserving timber
The many places of material are coated with use, improve further pipeline corrosion protection ability, extend pipeline service life, safe and reliable.
It should be noted that in this article, the relational terms of such as first and second or the like is used merely to a reality
Body or operation separate with another entity or operating space, and deposit between not necessarily requiring or imply these entities or operating
Relation or order in any this reality.And, term " includes ", " comprising " or its any other variant are intended to
Comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include that those are wanted
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Including process, method, article or the equipment of described key element there is also other identical element.
In describing the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " arrange ",
" install ", " being connected ", " connection " should be interpreted broadly, and connect for example, it may be fixing, it is also possible to be to removably connect, or one
Body ground connects；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to indirect by intermediary
It is connected, can be the connection of two element internals.For the ordinary skill in the art, can be with in concrete condition understanding
State term concrete meaning in the present invention.
In describing the invention, it should be noted that term " on ", D score, "left", "right", " interior ", the instruction such as " outward "
Orientation or position relationship be based on orientation shown in the drawings or position relationship, or this invention product use time usually put
Orientation or position relationship, be for only for ease of describe the present invention and simplify describe rather than instruction or hint indication device
Or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.It should also be noted that similar label and letter exist
Figure below represents similar terms, therefore, the most a certain Xiang Yi accompanying drawing is defined, is then not required in accompanying drawing subsequently
It is defined further and explains.
Claims (10)
1. a spigot-and-socket steel bushing concrete pressure pipe, it is characterised in that include manometer tube body, described manometer tube body bag
Including inner wall tube and outer wall pipe, described outer wall pipe box is located at the periphery of described inner wall tube, described inner wall tube include body, socket hoop with
And socket ring, described socket hoop and described socket ring are respectively arranged at the axial two ends of described body, and described socket hoop and
Described socket ring can cooperate socket joint connect.
2. spigot-and-socket steel bushing concrete pressure pipe as claimed in claim 1, it is characterised in that the inner surface of described inner wall tube
It is equipped with anticorrosive coat, described socket hoop one end of described manometer tube body and described socket ring one with the outer surface of described outer wall pipe
End is respectively provided with flexible water coating, described socket ring outer surface and described socket hoop inner surface and is provided with corrosion-inhibiting coating.
3. spigot-and-socket steel bushing concrete pressure pipe as claimed in claim 1, it is characterised in that described inner wall tube with described outside
Girth member and keeper it is provided with between wall pipe.
4. spigot-and-socket steel bushing concrete pressure pipe as claimed in claim 3, it is characterised in that described inner wall tube and described outside
It is filled with reinforcement material between wall pipe.
5. spigot-and-socket steel bushing concrete pressure pipe as claimed in claim 1, it is characterised in that described socket hoop includes straight
Section and to the close transition of described outer wall pipe, described flat segments is parallel with described inner wall tube and described outer wall pipe.
6. spigot-and-socket steel bushing concrete pressure pipe as claimed in claim 1, it is characterised in that the outer surface of described socket ring
It is provided with at least two circumferential groove, between the adjacent described circumferential groove of each two, is provided with only Jiao Tai.
7. spigot-and-socket steel bushing concrete pressure pipe as claimed in claim 6, it is characterised in that the vertical institute of described circumferential groove
Stating the central shaft of spigot-and-socket steel bushing concrete pressure pipe, described at least two circumferential groove is parallel to each other.
8. spigot-and-socket steel bushing concrete pressure pipe as claimed in claim 6, it is characterised in that described only Jiao Tai is provided with installation
Hole, described installing hole runs through described only Jiao Tai.
9. spigot-and-socket steel bushing concrete pressure pipe as claimed in claim 8, it is characterised in that be provided with in described circumferential groove
O-ring seal.
10. the spigot-and-socket steel bushing concrete pressure pipe as described in any one of claim 1-9, it is characterised in that described pressure
Tube body also includes that cathodic protection attachment means, described cathodic protection attachment means are arranged at the end of described outer wall pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887071.7A CN106247034A (en) | 2016-10-11 | 2016-10-11 | Spigot-and-socket steel bushing concrete pressure pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887071.7A CN106247034A (en) | 2016-10-11 | 2016-10-11 | Spigot-and-socket steel bushing concrete pressure pipe |
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| CN106247034A true CN106247034A (en) | 2016-12-21 |
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| CN201610887071.7A Pending CN106247034A (en) | 2016-10-11 | 2016-10-11 | Spigot-and-socket steel bushing concrete pressure pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959192A (en) * | 2017-03-22 | 2017-07-18 | 天津市久盛通达科技有限公司 | Socket type pipeline hydraulic test system |
| CN108253205A (en) * | 2016-12-28 | 2018-07-06 | 北京市水利规划设计研究院 | Pipeline and its component |
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| 李向东: "防腐技术在南水北调PCCP工程中的应用", 《山西水利科技》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253205A (en) * | 2016-12-28 | 2018-07-06 | 北京市水利规划设计研究院 | Pipeline and its component |
| CN108253205B (en) * | 2016-12-28 | 2024-05-14 | 北京市水利规划设计研究院 | Pipeline and assembly thereof |
| CN106959192A (en) * | 2017-03-22 | 2017-07-18 | 天津市久盛通达科技有限公司 | Socket type pipeline hydraulic test system |
| CN106959192B (en) * | 2017-03-22 | 2024-01-09 | 天津市久盛通达科技有限公司 | Socket type pipeline hydraulic test system |
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Address after: Qingtongxia City, Wuzhong City in the Ningxia Hui Autonomous Region Hexi 751600 Applicant after: Ningxia Qinglong Pipe Group Co.,Ltd. Address before: Qingtongxia City, Wuzhong City in the Ningxia Hui Autonomous Region Hexi 751600 Applicant before: NINGXIA QINGLONG PIPES INDUSTRY Co.,Ltd. |
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Application publication date: 20161221 |