CN210196677U - Steel cylinder type concrete pressure pipe and water supply pipeline - Google Patents

Steel cylinder type concrete pressure pipe and water supply pipeline Download PDF

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Publication number
CN210196677U
CN210196677U CN201920978059.6U CN201920978059U CN210196677U CN 210196677 U CN210196677 U CN 210196677U CN 201920978059 U CN201920978059 U CN 201920978059U CN 210196677 U CN210196677 U CN 210196677U
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steel
steel cylinder
pressure pipe
face
type concrete
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CN201920978059.6U
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Inventor
Weixiang Cui
崔卫祥
Jianhua Song
宋建华
Xianwei Zhang
张宪伟
Lingyun Liu
柳灵运
Dong Zhu
朱东
Wenbo Gao
高文博
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Ningxia Qinglong Pipe Group Co.,Ltd.
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Ningxia Qinglong Tube Co Ltd
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Abstract

The utility model discloses a steel cylinder type concrete pressure pipe and water supply pipeline relates to the pipe-line manufacture technology field. The steel cylinder type concrete pressure pipe comprises a combined reinforcing layer, an inner liner and a first steel cylinder. Outside the intermediate level was located to the protective layer cover, the second steel section of thick bamboo set up between protective layer and intermediate level, and the inside lining layer is located to the intermediate level cover outside, and first steel section of thick bamboo sets up between intermediate level and inside lining layer, is provided with first wire mesh piece in the protective layer, is provided with the second wire mesh piece in the intermediate level, and first wire mesh piece and second wire mesh piece all are the tube-shape. Compared with the prior art, the utility model provides a steel cylinder type concrete pressure pipe is owing to adopted the second steel cylinder that sets up between protective layer and intermediate level and set up in the first wire mesh and the second wire mesh of second steel cylinder both sides, so can bear higher inside and outside pressure, rigidity is high, non-deformable, and impervious ability reinforce to can avoid the brittle failure's of the steel wire that excels in the condition to take place, safe and reliable.

Description

Steel cylinder type concrete pressure pipe and water supply pipeline
Technical Field
The utility model relates to a pipeline manufacturing technical field particularly, relates to a steel cylinder type concrete pressure pipe and water feeding pipeline.
Background
At present, the pressure pipeline is an indispensable product for water delivery engineering. For years, pressure pipelines in China are rapidly developed, and a large number of steel pipes and Prestressed Concrete Cylinder Pipes (PCCP) are used in a large scale water delivery project represented by the south-to-north water transfer project.
However, the inventor researches and discovers that potential quality problems such as corrosion, high-strength steel wire brittle failure and the like easily occur to the PCCP, the PCCP cannot be used in the open air, and the defects affect the safe operation and the service life of the pipeline; the steel pipe has the defects of low rigidity, large deformation, low opposite mounting efficiency, poor impermeability and the like.
In view of the above, it is important to design and manufacture a safe and reliable steel cylinder type concrete pressure pipe and water supply pipeline, especially in pipeline production.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steel cylinder type concrete pressure pipe, simple structure, rigidity is high, can bear higher inside and outside pressure, non-deformable, impervious ability reinforce to can avoid the brittle failure's of the steel wire that excels in the condition to take place, safe and reliable.
Another object of the utility model is to provide a water conveying pipeline, simple structure, rigidity is high, can bear higher inside and outside pressure, non-deformable, impervious ability reinforce to can avoid the brittle failure's of high strength steel wire condition to take place, safe and reliable, durable practicality.
The utility model is realized by adopting the following technical scheme.
The utility model provides a steel cylinder type concrete pressure pipe, including the combination enhancement layer, inner liner and first steel cylinder, the combination enhancement layer includes the protective layer, second steel cylinder and intermediate level, the protective layer cover is located outside the intermediate level, the second steel cylinder sets up between protective layer and intermediate level, the protective layer passes through second steel cylinder and intermediate level fixed connection, the intermediate level cover is located outside the inner liner, first steel cylinder sets up between intermediate level and inner liner, the intermediate level is through first steel cylinder and inner liner fixed connection, be provided with first steel mesh in the protective layer, be provided with second steel mesh in the intermediate level, first steel mesh and second steel mesh all are the tube-shape.
Further, first wire net piece includes a plurality of vertical steel wires and a plurality of cyclic annular steel wire, and a plurality of vertical steel wire intervals set up, and be the annular distribution, and a plurality of cyclic annular steel wire intervals set up, and cyclic annular steel wire cover is located outside a plurality of vertical steel wires, and welds with a plurality of vertical steel wires respectively.
Further, the longitudinal steel wires and the annular steel wires are all low-carbon steel wires.
Further, the quantity of first wire net piece is a plurality of, and the diameter of a plurality of first wire net pieces is all inequality, and a plurality of first wire net piece coaxial interval sets up.
Furthermore, the combined reinforcing layer and the inner liner are arranged in a staggered mode, the combined reinforcing layer is provided with a first end face and a second end face oppositely, the inner liner is provided with a third end face and a fourth end face oppositely, and the first end face, the third end face, the second end face and the fourth end face are sequentially arranged in parallel at intervals.
Furthermore, the steel cylinder type concrete pressure pipe also comprises two first anticorrosive coatings, wherein one first anticorrosive coating is coated outside the first end surface, and the other first anticorrosive coating is coated outside the second end surface.
Further, steel cylinder type concrete pressure pipe still includes socket ring and socket ring, and socket ring relatively weld in the both ends of first steel cylinder, and the socket ring stretches out the second terminal surface, and with fourth terminal surface parallel and level, the third terminal surface is stretched out to the socket ring, and with first terminal surface parallel and level.
Further, the lengths of the protective layer, the second steel cylinder and the middle layer are the same, the protective layer and the middle layer are overlapped, one end of the second steel cylinder is flush with the first end face, and the other end of the second steel cylinder is flush with the second end face.
Further, the protective layer is made of concrete or cement mortar material.
The utility model provides a water supply pipeline, including foretell steel cylinder type concrete pressure pipe, this steel cylinder type concrete pressure pipe is including the combination enhancement layer, inner liner and first steel cylinder, the combination enhancement layer includes the protective layer, second steel cylinder and intermediate level, the protective layer cover is located outside the intermediate level, the second steel cylinder sets up between protective layer and intermediate level, the protective layer passes through second steel cylinder and intermediate level fixed connection, the intermediate level cover is located outside the inner liner, first steel cylinder sets up between intermediate level and inner liner, the intermediate level passes through first steel cylinder and inner liner fixed connection, be provided with first steel mesh in the protective layer, be provided with second steel mesh in the intermediate level, first steel mesh and second steel mesh all are the tube-shape.
The utility model provides a steel cylinder type concrete pressure pipe and water supply line have following beneficial effect:
the utility model provides a steel cylinder type concrete pressure pipe, the intermediate level is located to the protective layer cover outside, the second steel cylinder sets up between protective layer and intermediate level, the protective layer passes through second steel cylinder and intermediate level fixed connection, the intermediate level cover is located outside the inner liner, first steel cylinder sets up between intermediate level and inner liner, the intermediate level is through first steel cylinder and inner liner fixed connection, be provided with first wire mesh piece in the protective layer, be provided with the second wire mesh piece in the intermediate level, first wire mesh piece and second wire mesh piece all are the tube-shape. Compared with the prior art, the utility model provides a steel cylinder type concrete pressure pipe is owing to adopted the second steel cylinder that sets up between protective layer and intermediate level and set up in the first wire mesh and the second wire mesh of second steel cylinder both sides, so can bear higher inside and outside pressure, rigidity is high, non-deformable, and impervious ability reinforce to can avoid the brittle failure's of the steel wire that excels in the condition to take place, safe and reliable.
The utility model provides a water conveying pipeline, including steel cylinder type concrete pressure pipe, simple structure can bear higher inside and outside pressure, and rigidity is high, non-deformable, and impervious ability reinforce to can avoid the brittle failure's of the steel wire that excels in the condition to take place, safe and reliable, durable practicality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is an exploded view of a water supply pipeline provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a viewing angle of a steel cylinder type concrete pressure pipe according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another view angle of the steel cylinder type concrete pressure pipe according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of the first steel mesh in fig. 3.
Icon: 10-a water supply pipeline; 100-steel cylinder type concrete pressure pipe; 110-a combined reinforcement layer; 111-a protective layer; 112-a second steel cylinder; 113-an intermediate layer; 114-a first steel mesh sheet; 115-a second steel mesh sheet; 116-longitudinal steel wires; 117-annular steel wire; 118-a first end face; 119-a second end face; 120-an inner liner layer; 121-a third end face; 122-a fourth end face; 130-a first steel cylinder; 140-a socket ring; 150-socket ring; 160-a first corrosion protection layer; 170-a second corrosion protection layer; 180-sealing ring; 200-water channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.
Examples
Referring to fig. 1, an embodiment of the present invention provides a water supply pipeline 10 for supplying water. The high-strength steel wire anti-cracking device is simple in structure, high in rigidity, capable of bearing high internal pressure and external pressure, not prone to deformation, high in anti-cracking capacity, capable of avoiding the high-strength steel wire brittle failure, safe, reliable, durable and practical. It should be noted that the water supply pipeline 10 includes a plurality of steel cylinder type concrete pressure pipes 100, the plurality of steel cylinder type concrete pressure pipes 100 are connected in sequence and form a water channel 200, and water can flow in the water channel 200 to realize a function of supplying water.
Referring to fig. 2, the steel cylinder type concrete pressure pipe 100 includes a combined reinforcing layer 110, an inner liner 120, a first steel cylinder 130, a socket ring 140, a socket ring 150, two first corrosion prevention layers 160, and two second corrosion prevention layers 170. Outside the inner liner 120 was located to combination reinforcing layer 110 cover, first steel cylinder 130 set up between combination reinforcing layer 110 and inner liner 120, combination reinforcing layer 110 was used for protecting inner liner 120 through first steel cylinder 130 and inner liner 120 fixed connection, combination reinforcing layer 110 to improve the rigidity and the intensity of whole steel cylinder type concrete pressure pipe 100. The socket ring 150 and the socket ring 140 are welded to two ends of the first steel cylinder 130, so as to fix the relative positions of the socket ring 150, the first steel cylinder 130 and the socket ring 140, and the socket ring 150 and the socket ring 140 are used for being matched with each other, so that the installation is convenient, and the shock resistance is improved. Two first anticorrosive coatings 160 coat in the both ends of combination enhancement layer 110 respectively, and two second anticorrosive coatings 170 coat in the both ends of inner liner 120 respectively to seal anticorrosive to the terminal surface of whole steel cylinder type concrete pressure pipe 100, make it can adapt to various buried service environment, for example municipal road construction, irrigation and water conservancy construction, electric power and railway engineering construction, the durability is strong.
Referring to fig. 3 and 4, the combined reinforcement layer 110 includes a protective layer 111, a second steel cylinder 112, and an intermediate layer 113. The protective layer 111 is sleeved outside the intermediate layer 113, the second steel cylinder 112 is arranged between the protective layer 111 and the intermediate layer 113, and the protective layer 111 is fixedly connected with the intermediate layer 113 through the second steel cylinder 112. The intermediate layer 113 is sleeved on the inner liner 120, the first steel cylinder 130 is arranged between the intermediate layer 113 and the inner liner 120, and the intermediate layer 113 is fixedly connected with the inner liner 120 through the first steel cylinder 130. Specifically, the protective layer 111 is made of concrete or cement mortar material, and the intermediate layer 113 and the inner liner 120 are made of concrete.
In this embodiment, the first steel cylinder 130 and the second steel cylinder 112 act together to improve the strength of the steel cylinder type concrete pressure pipe 100, so that the steel cylinder type concrete pressure pipe 100 can maintain sufficient strength without using high-strength steel wires, and the high-strength steel wires are prevented from being brittle and broken and failing. In addition, the first steel cylinder 130 and the second steel cylinder 112 are coaxially arranged at intervals, so that the impermeability of the steel cylinder type concrete pressure pipe 100 can be enhanced, and the rigidity is improved, so that the steel cylinder type concrete pressure pipe 100 can bear high internal pressure and external pressure.
It should be noted that a first steel mesh sheet 114 is arranged in the protective layer 111, a second steel mesh sheet 115 is arranged in the middle layer 113, and both the first steel mesh sheet 114 and the second steel mesh sheet 115 are cylindrical. The first and second steel mesh sheets 114 and 115 can further increase the rigidity of the steel cylinder type concrete pressure pipe 100, so that it can withstand high internal and external pressures.
In this embodiment, the first steel mesh sheet 114 includes a plurality of longitudinal steel wires 116 and a plurality of annular steel wires 117. The plurality of longitudinal steel wires 116 are arranged at intervals and distributed annularly. The plurality of annular steel wires 117 are arranged at intervals, and the annular steel wires 117 are sleeved outside the plurality of longitudinal steel wires 116 and are respectively welded with the plurality of longitudinal steel wires 116. Specifically, the longitudinal steel wire 116 and the annular steel wire 117 are low carbon steel wires manufactured by cold rolling, hot rolling, and cold drawing processes.
In this embodiment, the specific structure of the second steel wire mesh 115 is the same as that of the first steel wire mesh 114, and is not described herein again.
It should be noted that, in this embodiment, the number of the first steel mesh sheets 114 and the number of the second steel mesh sheets 115 are both one. However, the invention is not limited to this, in other embodiments, the number of the first steel wire mesh sheets 114 is multiple, the diameters of the multiple first steel wire mesh sheets 114 are different, the multiple first steel wire mesh sheets 114 are coaxially arranged at intervals, and the first steel wire mesh sheet 114 with a larger diameter is sleeved outside the first steel wire mesh sheet 114 with a smaller diameter; the quantity of second wire net piece 115 is a plurality of, and a plurality of second wire net piece 115's diameter is all inequality, and a plurality of second wire net piece 115 coaxial interval sets up, and the great second wire net piece 115 cover of diameter is located outside the less second wire net piece 115 of diameter.
It should be noted that the length of the combined reinforcement layer 110 is the same as the length of the inner liner 120, and the combined reinforcement layer 110 and the inner liner 120 are disposed in a staggered manner. The combined reinforcing layer 110 is oppositely provided with a first end surface 118 and a second end surface 119, the lining layer 120 is oppositely provided with a third end surface 121 and a fourth end surface 122, and the first end surface 118, the third end surface 121, the second end surface 119 and the fourth end surface 122 are sequentially arranged in parallel at intervals. The first end surface 118 of each steel cylinder type concrete pressure pipe 100 interferes with the second end surface 119 of an adjacent one of the steel cylinder type concrete pressure pipes 100, and the third end surface 121 of each steel cylinder type concrete pressure pipe 100 interferes with the fourth end surface 122 of an adjacent one of the steel cylinder type concrete pressure pipes 100.
In this embodiment, one first corrosion protection layer 160 is coated on the outside of the first end surface 118, and the other first corrosion protection layer 160 is coated on the outside of the second end surface 119, so as to completely seal the two ends of the combined reinforcing layer 110 and prevent the combined reinforcing layer 110 from being corroded. One second anticorrosive layer 170 coats outside third terminal surface 121, and another second anticorrosive layer 170 coats outside fourth terminal surface 122 to seal the both ends of inner liner 120 completely, prevent that inner liner 120 from receiving the corruption. Specifically, the first and second corrosion prevention layers 160 and 170 are made of highly weather-resistant polyurethane, acrylate, and fluorocarbon materials.
In this embodiment, the socket ring 150 and the socket ring 140 are welded to two ends of the first steel cylinder 130, the socket ring 150 extends out of the second end surface 119 and is flush with the fourth end surface 122, and the socket ring 140 extends out of the third end surface 121 and is flush with the first end surface 118. Socket ring 150 of each steel cylinder type concrete pressure pipe 100 is fitted with socket ring 140 of an adjacent one of steel cylinder type concrete pressure pipes 100 to realize sequential connection of a plurality of steel cylinder type concrete pressure pipes 100, thereby forming water passage 200. Specifically, the socket ring 150 is sleeved with a sealing ring 180, the socket ring 150 abuts against the socket ring 140 through the sealing ring 180, and the sealing ring 180 can seal a gap between the socket ring 150 and the socket ring 140 to prevent external water or air from entering.
It should be noted that the lengths of the protective layer 111, the second steel cylinder 112, and the intermediate layer 113 are all the same, the protective layer 111 and the intermediate layer 113 are overlapped, one end of the second steel cylinder 112 is flush with the first end face 118, and the other end is flush with the second end face 119.
The embodiment of the utility model provides a steel cylinder type concrete pressure pipe 100, outside intermediate level 113 was located to protective layer 111 cover, second steel cylinder 112 set up between protective layer 111 and intermediate level 113, protective layer 111 passes through second steel cylinder 112 and intermediate level 113 fixed connection, 113 covers in intermediate level are located outside inner liner 120, first steel cylinder 130 sets up between intermediate level 113 and inner liner 120, intermediate level 113 is through first steel cylinder 130 and inner liner 120 fixed connection, be provided with first steel mesh sheet 114 in the protective layer 111, be provided with second steel mesh sheet 115 in the intermediate level 113, first steel mesh sheet 114 and second steel mesh sheet 115 all are the tube-shape. Compared with the prior art, the utility model provides a steel cylinder type concrete pressure pipe 100 is owing to adopted the second steel cylinder 112 that sets up between protective layer 111 and intermediate level 113 and set up in the first steel mesh 114 and the second steel mesh 115 of second steel cylinder 112 both sides, so can bear higher interior, the external pressure, rigidity is high, non-deformable, impervious ability reinforce, and can avoid the brittle failure's of the steel wire that excels in condition to take place, safety and reliability, make water supply pipeline 10 strong durability, and is practical reliable.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a steel cylinder type concrete pressure pipe, a serial communication port, including combination enhancement layer, inner liner and first steel cylinder, the combination enhancement layer includes protective layer, second steel cylinder and intermediate level, the protective layer cover is located outside the intermediate level, the second steel cylinder set up in the protective layer with between the intermediate level, the protective layer passes through the second steel cylinder with intermediate level fixed connection, the intermediate level cover is located outside the inner liner, first steel cylinder set up in the intermediate level with between the inner liner, the intermediate level passes through first steel cylinder with inner liner fixed connection, be provided with first steel mesh in the protective layer, be provided with second steel mesh in the intermediate level, first steel mesh with second steel mesh all is the tube-shape.
2. The steel cylinder type concrete pressure pipe according to claim 1, wherein the first steel wire mesh comprises a plurality of longitudinal steel wires and a plurality of annular steel wires, the longitudinal steel wires are arranged at intervals and distributed annularly, the annular steel wires are arranged at intervals, and the annular steel wires are sleeved outside the longitudinal steel wires and welded with the longitudinal steel wires respectively.
3. The steel cylinder type concrete pressure pipe as claimed in claim 2, wherein the longitudinal steel wire and the annular steel wire are both low carbon steel wires.
4. The steel cylinder type concrete pressure pipe according to claim 1, wherein the number of the first steel wire mesh sheets is plural, diameters of the plural first steel wire mesh sheets are different, and the plural first steel wire mesh sheets are coaxially arranged at intervals.
5. The steel cylinder type concrete pressure pipe as claimed in claim 1, wherein the combined reinforcing layer is arranged with the inner liner in a staggered manner, the combined reinforcing layer is relatively provided with a first end face and a second end face, the inner liner is relatively provided with a third end face and a fourth end face, and the first end face, the third end face, the second end face and the fourth end face are sequentially arranged in parallel at intervals.
6. The steel cylinder type concrete pressure pipe as claimed in claim 5, wherein the steel cylinder type concrete pressure pipe further comprises two first corrosion protection layers, one of the first corrosion protection layers being coated outside the first end face and the other of the first corrosion protection layers being coated outside the second end face.
7. The steel cylinder type concrete pressure pipe as claimed in claim 5, further comprising a socket ring and a socket ring, wherein the socket ring and the socket ring are welded to both ends of the first steel cylinder, the socket ring extends out of the second end face and is flush with the fourth end face, and the socket ring extends out of the third end face and is flush with the first end face.
8. The steel cylinder type concrete pressure pipe as claimed in claim 5, wherein the protective layer, the second steel cylinder and the intermediate layer are all the same in length, the protective layer and the intermediate layer are arranged in a superposed manner, and one end of the second steel cylinder is flush with the first end face and the other end is flush with the second end face.
9. The steel cylinder type concrete pressure pipe as claimed in claim 1, wherein the protective layer is made of concrete or cement mortar material.
10. A water supply pipeline comprising the steel cylinder type concrete pressure pipe as claimed in any one of claims 1 to 9.
CN201920978059.6U 2019-06-27 2019-06-27 Steel cylinder type concrete pressure pipe and water supply pipeline Active CN210196677U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920978059.6U CN210196677U (en) 2019-06-27 2019-06-27 Steel cylinder type concrete pressure pipe and water supply pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920978059.6U CN210196677U (en) 2019-06-27 2019-06-27 Steel cylinder type concrete pressure pipe and water supply pipeline

Publications (1)

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CN210196677U true CN210196677U (en) 2020-03-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110159843A (en) * 2019-06-27 2019-08-23 宁夏青龙管业股份有限公司 A kind of steel cylinder type concrete pressure pipe and water pipeline

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110159843A (en) * 2019-06-27 2019-08-23 宁夏青龙管业股份有限公司 A kind of steel cylinder type concrete pressure pipe and water pipeline

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Address after: 751600 Hexi, Qingtongxia City, Wuzhong City, Ningxia Hui Autonomous Region

Patentee after: Ningxia Qinglong Pipe Group Co.,Ltd.

Address before: 751600 Hexi, Qingtongxia City, Wuzhong City, Ningxia Hui Autonomous Region

Patentee before: NINGXIA QINGLONG PIPES INDUSTRY Co.,Ltd.

CP01 Change in the name or title of a patent holder