CN107956933A - A kind of compound lining hose of pipeline non-excavation rehabilitation and its method for sewing - Google Patents
A kind of compound lining hose of pipeline non-excavation rehabilitation and its method for sewing Download PDFInfo
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- CN107956933A CN107956933A CN201610905842.0A CN201610905842A CN107956933A CN 107956933 A CN107956933 A CN 107956933A CN 201610905842 A CN201610905842 A CN 201610905842A CN 107956933 A CN107956933 A CN 107956933A
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- fabric
- lining hose
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009412 basement excavation Methods 0.000 title claims abstract description 16
- 238000009958 sewing Methods 0.000 title claims abstract description 7
- 239000004744 fabric Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 22
- 230000004888 barrier function Effects 0.000 claims abstract description 13
- 229920002635 polyurethane Polymers 0.000 claims description 15
- 239000004814 polyurethane Substances 0.000 claims description 15
- 239000004745 nonwoven fabric Substances 0.000 claims description 9
- 238000001467 acupuncture Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010345 tape casting Methods 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 20
- 239000002131 composite material Substances 0.000 abstract description 8
- 201000010099 disease Diseases 0.000 abstract description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 9
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- -1 i.e. Substances 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- 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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/02—Hoses, i.e. flexible pipes made of fibres or threads, e.g. of textile which may or may not be impregnated, or provided with an impermeable layer, e.g. fire-hoses
-
- 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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2597/00—Tubular articles, e.g. hoses, pipes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of method of compound lining hose and its sewing for pipeline non-excavation rehabilitation, the compound lining hose is made of fabric, enhancement layer and impervious barrier, by overlap up and down suture made of tubulose repair materials, sealed using film bar.Enhancement layer greatly improves the tensile strength of fabric, enhancement layer forms interlayer structure under fabric covering, form composite material with impervious barrier, have pliability is good, intensity is high, environmental-friendly, load and excellent corrosion resistance it is specific, be adapted to non-excavating construction to repair disease pipeline.
Description
Technical field
The invention belongs to the compound lining hose and its seam of field of compound material, more particularly to a kind of pipeline non-excavation rehabilitation
The method of system.
Background technology
At present, about 5.8 ten thousand kilometers of subsoil drain total length being on active service in China more than 20 years, these old pipelines are more
In the presence of defect phenomenons such as leakage, corrosion, once it is subject to external disturbance to easily cause the accidents such as road landslide, pipeline burst.
According to traditional trenchless rehabilitation method, not only operational procedure is complicated, long in time limit, of high cost, while can destroy communal facility, block
Traffic, waste of manpower and material resources, therefore, the non-excavation repairing technique of disease pipeline come into being.
Trenchless technology mainly has bushing pipe method, local resin solidification, the embedding reinforcing method of interface, slip casting method and broken tube method etc..Wherein
Bushing pipe method is most widely used most ripe, and composite soft tube material is exactly the special engineering material of Trenchless Technology for Pipe Rehabilitation.It is multiple
Condensation material includes three layers：Impervious barrier, hose fabric base fabric and the resin bed for being immersed in hose fabric base fabric.Composite material be lining in by
After damaging pipeline, its antiseepage film plays the role of inner layer resin sealing, and can improve the surface property of tubular composite material, can make
Inner-walls of duct is more smooth, beneficial to the flowing of fluid；Solidified resin can increase the rigidity and intensity of internal lining pipe, can make after reparation
The service life of pipeline increases by 30~50 years.
In China, most of pipeline repairing material still relies on import.Foreign material is expensive, based on domestic pipeline reparation
Great market, domestic enterprise taken up carry out home made materials research and development and production.However, compared with imported material, still
With larger gap.Particularly in terms of the intensity of hose, its non-woven fabrics tensile strength is far above home products.In recent years, state
The trend that non-woven fabrics is substituted using glass fabric is inside risen, glass fabric can be good at making up lacking in terms of intensity
Fall into, but in the construction process, glass fabric is huge to construction personnel's injury, has strong thorn especially for exposed skin
Swash property effect, limit application of the glass fabric in terms of pipeline non-excavation rehabilitation.
The content of the invention
The problem to be solved in the present invention is to be directed to above-mentioned deficiency, there is provided a kind of compound lining for pipeline non-excavation rehabilitation
Hose and its method for sewing.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of compound lining hose of pipeline non-excavation rehabilitation, it is characterised in that：The compound lining hose includes antiseepage
Layer (1), fabric (2) and enhancement layer (3).The impervious barrier (1) uses polyurethanes (PU) material, thickness 0.5-
0.8mm.The fabric (2) is non-woven fabrics, using double-decker, breadth 1-8m；The enhancement layer (3) is located at fabric base
Among layer (2), compound with fabric (2) by way of acupuncture, breadth is identical with fabric (2), and thickness is knitted with individual layer
Thing basic unit (2) thickness is identical, is 1.5-10.5mm.
A kind of method that compound lining hose for pipeline non-excavation rehabilitation sews, the compound lining hose sewing
Method includes such as the next stage：First, fabric (2) and enhancement layer (3) are compound by acupuncture mode；Then, through heat treatment
Afterwards, polyurethanes (PU) material is cast in side fabric (2) using the tape casting, forms impervious barrier (1)；It
Afterwards, seam area (4) is reserved at planar materials both ends, width 7-10cm, is sutured by upper and lower overlapping mode, pipe is made
Shape fabric；Finally, seam crossing is subjected to encapsulation process by the way of film bar (5) bonding, ultimately forms compound lining hose.
The present invention has the advantages and positive effects of：Compound lining hose combines the environmental protection characteristic and glass of non-woven fabrics
The tensile characteristics of fiber cloth, breadth meet the pipeline rehabilitation of 300mm-2500mm.In work progress, operating personnel do not have to directly connect
Contact glass fibrous layer, avoids the injury to operating personnel's body.After construction, impervious barrier can tolerate the leaching of flowing water body in pipeline
Erosion, inner hose form firm renewal pipeline with resin；Restoration updating pipe lining pipe surface is bright and clean, smooth, is effectively ensured
The recovery of restoration updating function pipeline.
Brief description of the drawings
Fig. 1 is fabric, enhancement layer and impervious barrier planar structure schematic diagram.
Fig. 2 is composite hose structure schematic diagram.
In figure：1- impervious barriers；2- fabrics；3- enhancement layers；4- reserves seam area；5- film bars
Embodiment
Elaborate below in conjunction with the accompanying drawings to the specific embodiment of the present invention.
A kind of compound lining hose of pipeline non-excavation rehabilitation, it is characterised in that：The compound lining hose includes antiseepage
Layer (1), fabric (2) and enhancement layer (3).The impervious barrier (1) uses polyurethanes (PU) material, thickness 0.5-
0.8mm.The fabric (2) is non-woven fabrics, using double-decker, breadth 1-8m；The enhancement layer (3) is located at fabric base
Among layer (2), compound with fabric (2) by way of acupuncture, breadth is identical with fabric (2), and thickness is knitted with individual layer
Thing basic unit (2) thickness is identical, is 1.5-10.5mm.
A kind of method that compound lining hose for pipeline non-excavation rehabilitation sews, the compound lining hose sewing
Method includes such as the next stage：First, fabric (2) and enhancement layer (3) are compound by acupuncture mode；Then, through heat treatment
Afterwards, polyurethanes (PU) material is cast in side fabric (2) using the tape casting, forms impervious barrier (1)；It
Afterwards, seam area (4) is reserved at planar materials both ends, width 7-10cm, is sutured by upper and lower overlapping mode, pipe is made
Shape fabric；Finally, seam crossing is subjected to encapsulation process by the way of film bar (5) bonding, ultimately forms compound lining hose.
Compound lining hose thickness should use following equation to calculate：
Q=100 × (D--Dmin)/D (3)
In formula：The wall thickness of t--- compound lining hoses, mm
P--- groundwater pressures, MPa, takes 0.02MPa in the present embodiment
The C--- ovality reduction factors
The ovality of the original old pipelines of q---, %
The mean inside diameter of the original old pipelines of D---, mm
Dmin--- the minimum diameter of original old pipeline, mm
Dmax--- the maximum inner diameter of original old pipeline, mm
N--- safety coefficients, it is 2.0 to recommend value
EL--- the long-run elasticity modulus of internal lining pipe, MPa, the present embodiment take 1379MPa
K--- circumference supporting rates, it is 7.0 to recommend value
μ --- Poisson's ratio, in-situ solidifying method internal lining pipe take 0.3
Embodiment 1：
A kind of compound lining hose of pipeline non-excavation rehabilitation, when disease pipeline nominal diameter is 300mm, through above-mentioned public affairs
Formula calculates, and compound lining hose thickness is 5.93mm, at this time, according to non-woven fabrics：Glass fabric：Nonwoven thickness ratio 1: 1:
1 is for composite, i.e., monolayer material thickness is 1.98mm, and it is 0.5mm to take PU film thicknesses, and actual gross thickness is 6.5mm.
Embodiment 2：
A kind of compound lining hose of pipeline non-excavation rehabilitation, when disease pipeline nominal diameter is 1200mm, through above-mentioned
Formula calculates, and compound lining hose thickness is 16.54mm, at this time, according to non-woven fabrics：Glass fabric：Nonwoven thickness ratio 1
: 1: 1 is for composite, i.e., monolayer material thickness is 5.51mm, and it is 0.6mm to take PU film thicknesses, and actual gross thickness is 17.2mm.
Embodiment 3：
A kind of compound lining hose of pipeline non-excavation rehabilitation, when disease pipeline nominal diameter is 2400mm, through above-mentioned
Formula calculates, and compound lining hose thickness is 31.13mm, at this time, according to non-woven fabrics：Glass fabric：Nonwoven thickness ratio 1
: 1: 1 is for composite, i.e., monolayer material thickness is 10.40mm, and it is 0.8mm to take PU film thicknesses, and actual gross thickness is 32.0mm.
The section Example of the present invention is described in detail above, but the content is only the preferable implementation of the present invention
Example, it is impossible to be construed as limiting the practical range of the present invention.All all the changes and improvements made according to the present patent application scope
Deng, should all still belong to the present invention patent covering scope within.
Claims (5)
- A kind of 1. compound lining hose of pipeline non-excavation rehabilitation, it is characterised in that：The compound lining hose includes impervious barrier (1), fabric (2) and enhancement layer (3).
- 2. compound lining hose according to claim 1, it is characterised in that：The impervious barrier (1) uses polyurethane Ester (PU) material, thickness 0.5-0.8mm.
- 3. compound lining hose according to claim 1, it is characterised in that：The fabric (2) is non-woven fabrics, is used Double-decker, breadth 1-8m.
- 4. compound lining hose according to claim 1, it is characterised in that：The enhancement layer (3) is located at fabric (2) Centre, compound with fabric (2) by way of acupuncture, breadth is identical with fabric (2), thickness and woven basic unit (2) thickness is identical, is 1.5-10.5mm.
- 5. a kind of method that compound lining hose for pipeline non-excavation rehabilitation sews, the side of the compound lining hose sewing Method carries out as follows：First, fabric (2) and enhancement layer (3) are compound by acupuncture mode；Then, after heat treatment, polyurethanes (PU) material is cast to by side fabric (2) using the tape casting On, form impervious barrier (1)；Afterwards, seam area (4) is reserved at planar materials both ends, width 7-10cm, is sutured by upper and lower overlapping mode, Tubing is made；Finally, seam crossing is subjected to encapsulation process by the way of film bar (5) bonding, ultimately forms compound lining hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610905842.0A CN107956933A (en) | 2016-10-18 | 2016-10-18 | A kind of compound lining hose of pipeline non-excavation rehabilitation and its method for sewing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610905842.0A CN107956933A (en) | 2016-10-18 | 2016-10-18 | A kind of compound lining hose of pipeline non-excavation rehabilitation and its method for sewing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107956933A true CN107956933A (en) | 2018-04-24 |
Family
ID=61954066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610905842.0A Pending CN107956933A (en) | 2016-10-18 | 2016-10-18 | A kind of compound lining hose of pipeline non-excavation rehabilitation and its method for sewing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107956933A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644527A (en) * | 2018-05-09 | 2018-10-12 | 天津水工业工程设备有限公司 | A kind of production method for pipeline in-situ immobilization liner hose |
| CN111022820A (en) * | 2019-12-19 | 2020-04-17 | 江苏众信绿色管业科技有限公司 | Lining pipe for stainless steel pipeline repair and repair process |
| CN111578005A (en) * | 2020-05-21 | 2020-08-25 | 上海管康技术有限公司 | Polyethylene lining hose, manufacturing method and water supply pipeline repairing method |
| CN114321557A (en) * | 2021-12-24 | 2022-04-12 | 天津科技大学 | Composite lining hose for trenchless repair of pipeline and production method |
-
2016
- 2016-10-18 CN CN201610905842.0A patent/CN107956933A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644527A (en) * | 2018-05-09 | 2018-10-12 | 天津水工业工程设备有限公司 | A kind of production method for pipeline in-situ immobilization liner hose |
| CN111022820A (en) * | 2019-12-19 | 2020-04-17 | 江苏众信绿色管业科技有限公司 | Lining pipe for stainless steel pipeline repair and repair process |
| CN111578005A (en) * | 2020-05-21 | 2020-08-25 | 上海管康技术有限公司 | Polyethylene lining hose, manufacturing method and water supply pipeline repairing method |
| CN114321557A (en) * | 2021-12-24 | 2022-04-12 | 天津科技大学 | Composite lining hose for trenchless repair of pipeline and production method |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180424 |
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| WD01 | Invention patent application deemed withdrawn after publication |