CN108105531A - Manage and protect casing and its preparation process to a kind of seabed with corrosion resistance - Google Patents
Manage and protect casing and its preparation process to a kind of seabed with corrosion resistance Download PDFInfo
- Publication number
- CN108105531A CN108105531A CN201711363745.4A CN201711363745A CN108105531A CN 108105531 A CN108105531 A CN 108105531A CN 201711363745 A CN201711363745 A CN 201711363745A CN 108105531 A CN108105531 A CN 108105531A
- Authority
- CN
- China
- Prior art keywords
- seabed
- casing
- corrosion resistance
- filled core
- manage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
- F16L58/1081—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a preformed pipe
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses protecting pipe technical field a kind of seabed with corrosion resistance manage and protect casing, including filled core, inner sheath pipe is plugged at left and right sides of the inner cavity of the filled core, the outer wall of the filled core is socketed with outer sheath tube, the outer wall of the outer sheath tube is socketed with buffer layer, the buffer layer includes glass layer, the outer wall of the glass layer is socketed with base tube, the outer wall of the base tube is socketed with flame-retardant fibrous layer, compared with casing being managed and protected with the existing seabed with corrosion resistance, the configuration of the present invention is simple, it is easy to use, the present invention improves filled core on the basis of casing is managed and protected in the existing seabed with corrosion resistance, by carbon fiber filled core instead of previous glass fibre filled core, manage and protect the intensity and compressive property of casing with so adding the seabed with corrosion resistance.
Description
Technical field
The present invention relates to protecting pipe technical fields, specially manage and protect casing and its system to a kind of seabed with corrosion resistance
Standby technique.
Background technology
Protecting pipe is also insulating sleeve in fact, is a kind of new composite material tube for being compounded with insulating materials, it is with tree
The insulating sleeve that fat is combined for matrix and other reinforcing materials, seabed pipe in the pipeline of seabed conveying resource, by
Complicated in environments such as subsea, so being frequently necessary to one group of protecting pipe of external socket of in seabed pipe, to seabed pipe is protected,
With the enhancing seabed compressive property of pipe, and the existing filled core that casing is managed and protected for seabed is filled mostly using glass fibre
Core, and the compressive property of glass fibre filled core is relatively low, for this purpose, it is proposed that a kind of seabed with corrosion resistance ground tube boot
Pipe and its preparation process.
The content of the invention
Casing and its preparation process are managed and protected it is an object of the invention to provide a kind of seabed with corrosion resistance, with solution
The existing filled core that casing is managed and protected for seabed certainly mentioned above in the background art uses glass fibre filled core mostly, and
The problem of compressive property of glass fibre filled core is relatively low.
To achieve the above object, the present invention provides following technical solution：A kind of seabed with corrosion resistance ground tube boot
Pipe, including filled core, the inner cavity of the filled core is plugged with inner sheath pipe, and the outer wall of the filled core is socketed with outer sheath tube,
The outer wall of the outer sheath tube is socketed with buffer layer, and the buffer layer includes glass layer, the outer wall of the glass layer
Base tube is socketed with, the outer wall of the base tube is socketed with flame-retardant fibrous layer, and the outer wall of the buffer layer is socketed with anti-corrosion layer, described
Anti-corrosion layer includes resin rubber layer, and the outer wall of the resin rubber layer is socketed with polyurethane coating.
Preferably, the filled core is carbon fiber filled core.
Preferably, the base tube is pvc pipe.
Preferably, the inner sheath pipe is managed for HDEP.
Preferably, the internal diameter of the outer sheath tube is 2.5 times of inner sheath pipe outside diameter.
Preferably, each group distribution ratio of the outer sheath tube is：60-70 parts of polyvinyl chloride, 2-5 parts of neoprene, diformazan
10-15 parts of 2-3 parts of silicone oil, 3-5 parts of kaolin, 5-9 parts of clay, 10-20 parts of reinforcing agent, 3-6 parts of toughener and antioxidant.
Preferably, concretely comprising the following steps for the preparation process of casing should be managed and protected to the seabed with corrosion resistance：
Refining glue：By product requirement component design, a variety of materials is weighed up in proportion by recipe requirements in refining glue workshop, then is led to
Mixing is crossed, is filtered, is added sulphur technique that rubber compound is made and be fabricated to the adhesive tape for extrusion；
Extrusion process：Rubber compound is filled in extruder to squeeze out, filled core is fabricated to pipe dress band embryo, then by filled core band
Embryo, the inner sheath pipe made and rubber compound fill in co-extruding mould, then by extruder to the collective effect of co-extruding mould to filling out
The inner sheath pipe and rubber compound for fill core ribbon embryo, making carry out pressure processing；
Traction processing：The semi-finished product that co-extruding mould comes out cooler bin is drawn to draft gear to cool down, then through supercooling
But the semi-finished product of case continue to be drawn to roller aperture equipment roller aperture, finally the semi-finished product in the good hole of roller are continued to be drawn to vulcanization line severing sulphur
Change；
Vulcanization processing：Vulcanization line to semi-finished product carry out severing vulcanizing treatment, the semi-finished product vulcanizated by technological requirement into
The good product of pressure testing is finally carried out winding packaging by horizontal high voltage pressure testing.
Preferably, in the step refining glue, the coagulation process of refining glue is：First polyvinyl chloride and neoprene are put by proportioning
Enter in heated at constant temperature agitating device, heating stirring 25 minutes, heating temperature is 120 degrees Celsius, is cooled to room temperature, then adds by proportioning
Enter dimeticone, kaolin and clay, heating stirring 20 minutes, heating temperature is 150 degrees Celsius, after being cooled to room temperature, then is added
Enter reinforcing agent, toughener and antioxidant, heating stirring 60 minutes, heating temperature is 100 degrees Celsius.
Compared with prior art, the beneficial effects of the invention are as follows：With the existing seabed with corrosion resistance tube boot
Pipe is compared, the configuration of the present invention is simple, easy to use, and the present invention manages and protects casing basis in the existing seabed with corrosion resistance
On filled core is improved, by carbon fiber filled core instead of previous glass fibre filled core, so add tool
Manage and protect the intensity and compressive property of casing with having the seabed of corrosion resistance.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is buffer layer structure schematic diagram of the present invention；
Fig. 3 is anti-corrosion layer structure diagram of the present invention.
In figure：1 filled core, 2 inner sheath pipes, 3 outer sheath tubes, 4 buffer layers, 41 glass layers, 42 base tubes, 43 fire-retardant fibres
Tie up layer, 5 anti-corrosion layers, 51 resin rubber layers, 52 polyurethane coatings.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
- 3 are please referred to Fig.1, the present invention provides a kind of technical solution：Casing is managed and protected to a kind of seabed with corrosion resistance,
Including filled core 1, the inner cavity of filled core 1 is plugged with inner sheath pipe 2, and the outer wall of filled core 1 is socketed with outer sheath tube 3, oversheath
The outer wall of pipe 3 is socketed with buffer layer 4, and buffer layer 4 includes glass layer 41, and the outer wall of glass layer 41 is socketed with base tube
42, the outer wall of base tube 42 is socketed with flame-retardant fibrous layer 43, and the outer wall of buffer layer 4 is socketed with anti-corrosion layer 5, and anti-corrosion layer 5 includes
Resin rubber layer 51, the outer wall of resin rubber layer 51 are socketed with polyurethane coating 52.
Wherein, filled core 1 is carbon fiber filled core, and base tube 42 is pvc pipe, and inner sheath pipe 2 is managed for HDEP, outer sheath tube 3
Internal diameter be 2.5 times of 2 outer diameter of inner sheath pipe, manage and protect to a kind of seabed with corrosion resistance the preparation process of casing, outer shield
The each group distribution ratio of casing 3 is：60-70 parts of polyvinyl chloride, 2-5 parts of neoprene, 2-3 parts of dimeticone, 3-5 parts of kaolin,
10-15 parts of 5-9 parts of clay, 10-20 parts of reinforcing agent, 3-6 parts of toughener and antioxidant should manage to the seabed with corrosion resistance
The preparation process's of protecting pipe concretely comprises the following steps：
Refining glue：By product requirement component design, a variety of materials is weighed up in proportion by recipe requirements in refining glue workshop, then is led to
Mixing is crossed, is filtered, is added sulphur technique that rubber compound is made and be fabricated to the adhesive tape for extrusion, in step refining glue, the coagulation mistake of refining glue
Cheng Wei：First polyvinyl chloride and neoprene are put by proportioning in heated at constant temperature agitating device, heating stirring 25 minutes, heating temperature
It spends for 120 degrees Celsius, is cooled to room temperature, then adds in dimeticone, kaolin and clay, heating stirring 20 minutes by proportioning and add
Hot temperature is 150 degrees Celsius, after being cooled to room temperature, adds reinforcing agent, toughener and antioxidant, heating stirring 60 minutes,
Heating temperature is 100 degrees Celsius；
Extrusion process：Rubber compound is filled in extruder to squeeze out, filled core 1 is fabricated to pipe dress band embryo, then by 1 band of filled core
Embryo, the inner sheath pipe 2 made and rubber compound fill in co-extruding mould, then by extruder to the collective effect of co-extruding mould to filling out
It fills core 1 and carries out pressure processing with embryo, the inner sheath pipe 2 made and rubber compound；
Traction processing：The semi-finished product that co-extruding mould comes out cooler bin is drawn to draft gear to cool down, then through supercooling
But the semi-finished product of case continue to be drawn to roller aperture equipment roller aperture, finally the semi-finished product in the good hole of roller are continued to be drawn to vulcanization line severing sulphur
Change；
Vulcanization processing：Vulcanization line to semi-finished product carry out severing vulcanizing treatment, the semi-finished product vulcanizated by technological requirement into
The good product of pressure testing is finally carried out winding packaging by horizontal high voltage pressure testing.
Operation principle：Casing is managed and protected to the seabed with corrosion resistance of the present invention to carry out in use, anti-corrosion layer 5 is straight
It connects and is contacted with external environment, and resin rubber layer has good wearability and corrosion resistance so that anti-corrosion layer 5 is not easy
It is corroded by the corrosive deposit in seawater, and polyurethane coating 52 can further improve the corrosion resistance of anti-corrosion layer 5, buffering
Layer 4 can slow down pressure of the seawater to outer sheath tube 3, into have the function that protect outer sheath tube 3, outer sheath tube 3 is to filling
Core 1 and inner sheath pipe 2 are wrapped up, and reach the protective effect to filled core 1 and inner sheath pipe 2, and filled core 1 is filled for carbon fiber
Core, carbon fiber have good toughness and compression strength, and the carbon fiber wall glass fibre of same volume will slightly be done, and matter
Amount is light, manages and protects use of the casing in seabed with can better meeting seabed, and inner sheath pipe 2 is right for managing with wrapping up seabed
Seabed pipe be supported and protect.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. casing is managed and protected to a kind of seabed with corrosion resistance, including filled core (1), it is characterised in that：The filled core (1)
Inner cavity be plugged with inner sheath pipe (2), the outer wall of the filled core (1) is socketed with outer sheath tube (3), the outer sheath tube (3)
Outer wall be socketed with buffer layer (4), the buffer layer (4) includes glass layer (41), the glass layer (41) it is outer
Wall is socketed with base tube (42), and the outer wall of the base tube (42) is socketed with flame-retardant fibrous layer (43), the outer wall set of the buffer layer (4)
Anti-corrosion layer (5) is connected to, the anti-corrosion layer (5) includes resin rubber layer (51), the outer wall set of the resin rubber layer (51)
It is connected to polyurethane coating (52).
2. manage and protect casing to a kind of seabed with corrosion resistance according to claim 1, it is characterised in that：The filling
Core (1) is carbon fiber filled core.
3. manage and protect casing to a kind of seabed with corrosion resistance according to claim 1, it is characterised in that：The base tube
(42) it is pvc pipe.
4. manage and protect casing to a kind of seabed with corrosion resistance according to claim 1, it is characterised in that：The interior shield
Casing (2) is managed for HDEP.
5. manage and protect casing to a kind of seabed with corrosion resistance according to claim 1, it is characterised in that：The outer shield
The internal diameter of casing (3) is 2.5 times of inner sheath pipe (2) outer diameter.
6. manage and protect to a kind of seabed with corrosion resistance the preparation process of casing, it is characterised in that：The outer sheath tube (3)
Each group distribution ratio is：60-70 parts of polyvinyl chloride, 2-5 parts of neoprene, 2-3 parts of dimeticone, 3-5 parts of kaolin, clay 5-9
Part, 10-20 parts of reinforcing agent, 3-6 parts of toughener and 10-15 parts of antioxidant.
7. managing and protecting to a kind of seabed with corrosion resistance according to claim 6 the preparation process of casing, feature exists
In：Manage and protect to the seabed with corrosion resistance concretely comprising the following steps for the preparation process of casing：
Refining glue：By product requirement component design, a variety of materials is weighed up in proportion by recipe requirements in refining glue workshop, then by mixed
Refining, filtering, adds sulphur technique that rubber compound is made and is fabricated to the adhesive tape for extrusion；
Extrusion process：Rubber compound is filled in extruder to squeeze out, filled core (1) is fabricated to pipe dress band embryo, then by filled core (1) band
Embryo, the inner sheath pipe (2) made and rubber compound fill in co-extruding mould, then by extruder to the collective effect pair of co-extruding mould
Filled core (1) carries out pressure processing with embryo, the inner sheath pipe (2) made and rubber compound；
Traction processing：The semi-finished product that co-extruding mould comes out cooler bin is drawn to draft gear to cool down, then by cooler bin
Semi-finished product continue to be drawn to roller aperture equipment roller aperture, the semi-finished product in the good hole of roller finally are continued to be drawn to vulcanization line severing vulcanization；
Vulcanization processing：Vulcanization line carries out severing vulcanizing treatment to semi-finished product, and the semi-finished product vulcanizated are carried out height by technological requirement
Pressure testing is pressed, the good product of pressure testing is finally carried out winding packaging.
8. managing and protecting to a kind of seabed with corrosion resistance according to claim 6 the preparation process of casing, feature exists
In：In the step refining glue, the coagulation process of refining glue is：Polyvinyl chloride and neoprene first are put into heated at constant temperature by proportioning to stir
Mix in device, heating stirring 25 minutes, heating temperature is 120 degrees Celsius, is cooled to room temperature, then by proportioning add in dimeticone,
Kaolin and clay, heating stirring 20 minutes, heating temperature is 150 degrees Celsius, after being cooled to room temperature, adds reinforcing agent, increases
Tough dose and antioxidant, heating stirring 60 minutes, heating temperature are 100 degrees Celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711363745.4A CN108105531A (en) | 2017-12-18 | 2017-12-18 | Manage and protect casing and its preparation process to a kind of seabed with corrosion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711363745.4A CN108105531A (en) | 2017-12-18 | 2017-12-18 | Manage and protect casing and its preparation process to a kind of seabed with corrosion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108105531A true CN108105531A (en) | 2018-06-01 |
Family
ID=62211001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711363745.4A Pending CN108105531A (en) | 2017-12-18 | 2017-12-18 | Manage and protect casing and its preparation process to a kind of seabed with corrosion resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108105531A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107381A (en) * | 2021-04-13 | 2021-07-13 | 皇俊奇 | High-toughness casing pipe for shale gas exploitation |
| CN114060619A (en) * | 2021-11-09 | 2022-02-18 | 湖南隆盛达钢管制造有限公司 | Anti-corrosion thick-wall spiral steel pipe and machining method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6282022A (en) * | 1985-10-04 | 1987-04-15 | Nitto Electric Ind Co Ltd | Corrosion prevention method for steel |
| JPH02163586A (en) * | 1988-12-15 | 1990-06-22 | Inoue Mtp Co Ltd | Multilayered pipe having impregnated mortar layer |
| BRMU8803146U2 (en) * | 2008-12-10 | 2010-03-02 | Panmarine Equipamentos E Servi | Arrangement inserted into inner lining of pipes |
| CN102494207A (en) * | 2011-12-25 | 2012-06-13 | 江苏金波新材料科技有限公司 | Novel seafloor water delivery pipe |
| CN105221859A (en) * | 2015-10-22 | 2016-01-06 | 盘锦建硕管业有限公司 | A kind of fiber reinforcement type insulation thermoplastic composite pipe and preparation method thereof |
| CN105694281A (en) * | 2016-02-03 | 2016-06-22 | 台州市峰源卫浴有限公司 | Wear-resistant modified PVC (polyvinyl chloride) for high-pressure pipe sheaths and production method thereof |
| CN206060146U (en) * | 2016-08-24 | 2017-03-29 | 重庆恒亚管业有限公司 | A kind of power cable sheath pipe |
| CN106626426A (en) * | 2016-12-15 | 2017-05-10 | 中裕软管科技有限公司 | One-time formed rubber double-face rubber hose and process thereof |
-
2017
- 2017-12-18 CN CN201711363745.4A patent/CN108105531A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6282022A (en) * | 1985-10-04 | 1987-04-15 | Nitto Electric Ind Co Ltd | Corrosion prevention method for steel |
| JPH02163586A (en) * | 1988-12-15 | 1990-06-22 | Inoue Mtp Co Ltd | Multilayered pipe having impregnated mortar layer |
| BRMU8803146U2 (en) * | 2008-12-10 | 2010-03-02 | Panmarine Equipamentos E Servi | Arrangement inserted into inner lining of pipes |
| CN102494207A (en) * | 2011-12-25 | 2012-06-13 | 江苏金波新材料科技有限公司 | Novel seafloor water delivery pipe |
| CN105221859A (en) * | 2015-10-22 | 2016-01-06 | 盘锦建硕管业有限公司 | A kind of fiber reinforcement type insulation thermoplastic composite pipe and preparation method thereof |
| CN105694281A (en) * | 2016-02-03 | 2016-06-22 | 台州市峰源卫浴有限公司 | Wear-resistant modified PVC (polyvinyl chloride) for high-pressure pipe sheaths and production method thereof |
| CN206060146U (en) * | 2016-08-24 | 2017-03-29 | 重庆恒亚管业有限公司 | A kind of power cable sheath pipe |
| CN106626426A (en) * | 2016-12-15 | 2017-05-10 | 中裕软管科技有限公司 | One-time formed rubber double-face rubber hose and process thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107381A (en) * | 2021-04-13 | 2021-07-13 | 皇俊奇 | High-toughness casing pipe for shale gas exploitation |
| CN113107381B (en) * | 2021-04-13 | 2024-04-09 | 西安友兴能源科技有限公司 | Shale gas exploitation is with high toughness sleeve pipe |
| CN114060619A (en) * | 2021-11-09 | 2022-02-18 | 湖南隆盛达钢管制造有限公司 | Anti-corrosion thick-wall spiral steel pipe and machining method thereof |
| CN114060619B (en) * | 2021-11-09 | 2023-09-01 | 湖南隆盛达钢管制造有限公司 | Corrosion-resistant thick-wall spiral steel pipe and processing method thereof |
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Application publication date: 20180601 |