CN113480949B - Special belt for overhauling polyethylene anticorrosive coating bent pipe of buried steel pipeline - Google Patents
Special belt for overhauling polyethylene anticorrosive coating bent pipe of buried steel pipeline Download PDFInfo
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- CN113480949B CN113480949B CN202110841177.4A CN202110841177A CN113480949B CN 113480949 B CN113480949 B CN 113480949B CN 202110841177 A CN202110841177 A CN 202110841177A CN 113480949 B CN113480949 B CN 113480949B
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- belt
- baffle
- layer
- steel pipeline
- anticorrosive coating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/02—Supporting web roll
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/26—Presence of textile or fabric
- C09J2400/263—Presence of textile or fabric in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pipe Accessories (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses a special belt for overhauling a polyethylene anticorrosive coating bent pipe of a buried steel pipeline, which comprises a first baffle, wherein one end of the first baffle is provided with a second baffle, a winding wheel is arranged between the first baffle and the second baffle, and the surface of the winding wheel is provided with a belt repairing mechanism. The special overhaul belt for the polyethylene anticorrosive layer elbow of the buried steel pipeline comprises a non-woven fabric layer and a reinforcing wire layer through an arranged repair belt mechanism, wherein the non-woven fabric layer can effectively enhance the tensile resistance of the adhesive tape body, so that the repair belt wound on the surface cannot deform or break, the reinforcing wire layer is made of polyester fiber materials, the rigidity of the special overhaul belt is higher, the tensile resistance of the repair belt can be further improved by matching with the non-woven fabric layer, the materials are rich in elasticity and can rebound quickly, the repair belt has higher recovery capability, and meanwhile, by matching with a roll coating structure, when the special overhaul belt faces to the uneven surface of the elbow, the special overhaul belt can still be easily operated, so that the pipeline can be repaired in place.
Description
Technical Field
The invention relates to the technical field of polyethylene anticorrosive adhesive tapes, in particular to a special belt for overhauling a polyethylene anticorrosive coating bent pipe of a buried steel pipeline.
Background
The polyethylene anticorrosive adhesive tape consists of a base film and an adhesive layer, wherein the base film is a polyethylene film sheet, the adhesive layer is butyl rubber, the polyethylene anticorrosive adhesive tape has good mechanical strength and bonding sealing performance, can be divided into an anticorrosive tape, a protective tape and a joint coating tape according to the functions of the polyethylene anticorrosive adhesive tape, is divided into a common grade, a reinforcing grade and a special reinforcing grade according to the grade requirement of an anticorrosive coating, is mainly applied to the outer surface anticorrosion of buried steel pipelines in petroleum and natural gas transmission, water supply and drainage and gas transmission in chemical engineering and urban construction, has the characteristics of convenient construction, no pollution and the like, and is often arranged to be wound by workers when the pipelines are installed, used or repaired; the special area of overhaul of the special polyethylene anticorrosive coating return bend of buried steel pipeline that has now has certain drawback when using, and the card tensile ability is not strong, leads to the winding back on the pipeline, and easy deformation fracture, and when meetting the circumstances such as striking, the sticky tape reply ability is relatively poor, and when twining the return bend, the operation is comparatively troublesome simultaneously.
Disclosure of Invention
The invention mainly aims to provide a special belt for overhauling a polyethylene anticorrosive coating bent pipe of a buried steel pipeline, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
bury special area of overhaul of ground steel pipeline polyethylene anticorrosive coating return bend, including first baffle, its characterized in that: a second baffle plate is arranged at one end of the first baffle plate, a winding wheel is arranged between the first baffle plate and the second baffle plate, and a repairing belt mechanism is arranged on the surface of the winding wheel;
repair band mechanism and include polyethylene protection film, first gluing layer, non-woven fabrics layer, enhancement silk layer, second gluing layer and antiseized barrier film, first gluing layer sets up between polyethylene protection film and non-woven fabrics layer, the bottom fixed surface on non-woven fabrics layer is connected with and strengthens silk layer, the bottom surface on enhancement silk layer is provided with second gluing layer, the bottom fixed surface on second gluing layer is connected with antiseized barrier film.
In order to save labor when repairing the pipeline, the special belt for overhauling the polyethylene anticorrosive coating bent pipe of the buried steel pipeline is provided, the bearing sleeve is fixedly embedded in the middle of the surface of one end of the first baffle plate, the roller is connected to the inside of the bearing sleeve in a rolling manner, the rubber handle is connected to the surface of the roller in a rolling manner, the first connecting sleeve is fixedly arranged in the middle of the surface of the other end of the first baffle plate, and the inner side surface of the first connecting sleeve is fixedly connected with the inner thread sleeve.
In order to facilitate grasping and operation of workers during pipeline repairing, the special belt for overhauling the polyethylene anticorrosive coating bent pipe of the buried steel pipeline is provided with a second connecting sleeve fixedly arranged at the middle of one end surface of the second baffle, a threaded head is fixedly arranged at one end surface of the second connecting sleeve, a fixed handle is fixedly arranged at the middle of the other end surface of the second connecting sleeve, a sleeving groove is formed in the surface of the fixed handle close to the other end of the fixed handle, a sponge sleeve is sleeved and connected on the surface of the sleeving groove, and the internal thread sleeve is in threaded connection with the threaded head.
In order to ensure that the repairing tape is wound regularly and is not adhered with impurities, the special repairing tape for the polyethylene anticorrosive coating bent pipe of the buried steel pipeline is used as the special repairing tape for the buried steel pipeline bent pipe, the winding wheel is in an I-shaped structure, and the repairing tape mechanism is wound and connected to the surface of the winding wheel.
In order to enable the anti-stretching capacity of the repairing belt to be higher, the special belt for overhauling the polyethylene anticorrosive coating bent pipe of the buried steel pipeline is used, the reinforcing wire layer is made of polyester fiber materials, and the reinforcing wire layer is connected with the anti-sticking isolation film in a bonding mode.
In order to enable the connection between the belt repairing layer structures to be more firm, the belt is used as a special belt for overhauling the polyethylene anticorrosive layer bent pipe of the buried steel pipeline, the first adhesive layer and the second adhesive layer are made of butyl rubber and are in adhesive connection with the upper layer and the lower layer which are adjacent to each other.
In order to ensure that the repairing belt has good adsorbability and adhesion, the anti-sticking isolating film is made of a PET silicone oil isolating film and is used as a special repairing belt special for the polyethylene anticorrosive coating bent pipe of the buried steel pipeline.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the arranged repair belt mechanism comprises the non-woven fabric layer and the reinforcing wire layer, the non-woven fabric layer can effectively enhance the tensile resistance of the adhesive tape body, so that the repair belt wound on the surface cannot deform or break, the reinforcing wire layer is made of polyester fiber material, the polyester fiber material has higher rigidity, the tensile resistance of the repair belt can be further improved by matching with the non-woven fabric layer, the material is rich in elasticity and can rebound quickly, the repair belt has stronger recovery capability, and the repair belt can still be easily operated by matching with a roll coating structure when facing the uneven surface of a bent pipe, so that the pipeline can be repaired in place.
Drawings
FIG. 1 is a schematic view of the overall structure of a special band for overhaul of a polyethylene anticorrosive coating elbow pipe of a buried steel pipeline according to the present invention;
FIG. 2 is a schematic view of the disassembly of the forward and reverse connection structure of the first baffle of the special overhaul belt for the polyethylene anticorrosive coating elbow of the buried steel pipeline of the invention;
FIG. 3 is a schematic view of the disassembly of the second baffle connecting structure of the special overhaul belt for the polyethylene anticorrosive coating elbow pipe of the buried steel pipeline of the invention;
FIG. 4 is a schematic diagram of the disassembly of a winding wheel and a repairing belt mechanism of a special overhaul belt for a polyethylene anticorrosive coating elbow pipe of a buried steel pipeline;
FIG. 5 is a partial cross-sectional view of a repair belt mechanism of the special overhaul belt for the polyethylene anticorrosive coating elbow pipe of the buried steel pipeline.
In the figure: 1. a first baffle plate; 101. a bearing housing; 102. a roller; 103. a rubber grip; 104. a first connecting sleeve; 105. an internal thread sleeve; 2. a second baffle; 201. a second connecting sleeve; 202. a screw head; 203. fixing a handle; 204. sleeving a groove; 205. a sponge sleeve; 3. a winding wheel; 4. repairing the belt mechanism; 401. a polyethylene protective film; 402. a first adhesive layer; 403. a non-woven fabric layer; 404. a reinforcing filament layer; 405. a second adhesive layer; 406. an anti-sticking isolating film.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, the special belt for overhauling a polyethylene anticorrosive coating elbow pipe of a buried steel pipeline comprises a first baffle plate 1, a second baffle plate 2 is arranged at one end of the first baffle plate 1, a winding wheel 3 is arranged between the first baffle plate 1 and the second baffle plate 2, and a belt repairing mechanism 4 is arranged on the surface of the winding wheel 3;
in this embodiment, the repair tape mechanism 4 includes a polyethylene protective film 401, a first adhesive layer 402, a non-woven fabric layer 403, a reinforcing yarn layer 404, a second adhesive layer 405, and an anti-sticking isolation film 406, the first adhesive layer 402 is disposed between the polyethylene protective film 401 and the non-woven fabric layer 403, the reinforcing yarn layer 404 is fixedly connected to the bottom surface of the non-woven fabric layer 403, the second adhesive layer 405 is disposed on the bottom surface of the reinforcing yarn layer 404, and the anti-sticking isolation film 406 is fixedly connected to the bottom surface of the second adhesive layer 405.
When the steel pipeline repairing belt is used specifically, the repairing belt at the beginning can be stripped at the position of the steel pipeline elbow to be adhered to the surface of the elbow, the steel pipeline elbow is continuously wound at the position to be repaired in a rotating mode, the last circle of repairing belt covers one third of the previous circle of repairing belt, repairing and isolating can be guaranteed to be in place, the surface of the pipeline is isolated from the outside, and therefore the anti-corrosion effect is achieved.
In this embodiment, a bearing sleeve 101 is embedded and fixed in the middle of one end surface of the first baffle 1, a roller 102 is connected in the bearing sleeve 101 in a rolling manner, a rubber grip 103 is connected in the surface of the roller 102 in a rolling manner, a first connecting sleeve 104 is fixedly installed in the middle of the other end surface of the first baffle 1, and an internal thread sleeve 105 is fixedly connected on the inner side surface of the first connecting sleeve 104.
When the winding wheel 3 is used in place, a worker can hold the rubber handle 103 with one hand, the first baffle plate 1 can be abutted to the surface of the bent pipe to rotate in the process of winding the repair tape, and the worker can easily push the device to wind the repair tape under the action of the bearing sleeve 101 and the roller 102.
In this embodiment, the second connecting sleeve 201 is fixedly mounted in the middle of one end surface of the second baffle 2, the thread head 202 is fixedly mounted on one end surface of the second connecting sleeve 201, the fixed handle 203 is fixedly mounted in the middle of the other end surface of the second connecting sleeve 201, the sleeve groove 204 is formed in the surface of the fixed handle 203 close to the other end, the sponge sleeve 205 is arranged and connected on the surface of the sleeve groove 204, and the internal thread sleeve 105 is spirally connected with the thread head 202.
During the specific use, after the winding wheel 3 is sleeved on the first connecting sleeve 104, the thread head 202 and the internal thread sleeve 105 can be spirally fixed, and further the first connecting sleeve 104 and the second connecting sleeve 201 can be connected seamlessly, in the winding repair band process, a worker can hold the other hand on the surface of the sponge sleeve 205 firstly, so as to match the rotation of the first baffle plate 1 and the second baffle plate 2 on the surface of the pipeline, when the pipeline is rotated to a place where the pipeline is not operated well, the worker can hold the surface of the fixed handle 203, so that the worker can conveniently exert force, and the first connecting sleeve 104 and the second connecting sleeve 201 are abutted against the surface of the pipeline to roll back.
In this embodiment, the winding wheel 3 is an i-shaped structure, and the repair tape mechanism 4 is wound around and connected to the surface of the winding wheel 3.
When the winding wheel is used specifically, the winding wheel 3 continuously rotates on the surface of the sleeve along with continuous repairing of the repairing belt, so that the repairing belt can be conveniently repaired and wound.
In this embodiment, the reinforcing yarn layer 404 is made of polyester yarn, and the reinforcing yarn layer 404 and the anti-sticking separation film 406 are bonded together.
When the material is used specifically, the polyester yarn material has high rigidity, the tensile resistance of the repair belt can be further improved by matching with the non-woven fabric layer 403, the material is rich in elasticity and can rebound quickly, and the repair belt has high recovery capability.
In this embodiment, the first adhesive layer 402 and the second adhesive layer 405 are made of butyl rubber, and are adhesively connected to the upper layer and the lower layer.
When the adhesive is used specifically, the butyl rubber material is environment-friendly, cannot cause pollution in use, has strong viscosity, and can enable the layer structures to be tightly connected together.
In this embodiment, the release liner 406 is a PET silicone oil liner.
When the PET silicone oil isolating membrane is used specifically, the repairing belt has good adsorbability and adhesion, so that the conditions that the repairing belt is stripped or falls off on the surface of a pipeline and the like are avoided, and the repairing belt can effectively achieve the functions of repairing or corrosion prevention and the like for a long time.
Working principle; firstly, after the winding wheel 3 is sleeved on the first connecting sleeve 104, the thread head 202 and the internal thread sleeve 105 can be spirally fixed, so that the first connecting sleeve 104 and the second connecting sleeve 201 can be connected seamlessly, after the winding wheel 3 is installed in place, a worker can hold the rubber handle 103 with one hand, in the process of winding the repair tape, the first baffle plate 1 can be abutted to the surface of the bent pipe to rotate, under the action of the bearing sleeve 101 and the rolling shaft 102, the worker can easily push the device to wind the repair tape, in the process of winding the repair tape, the worker can hold the other hand on the surface of the sponge sleeve 205 to match the rotation of the first baffle plate 1 and the second baffle plate 2 on the surface of the pipe, when the pipe is rotated to a place where the pipe is not operated well, the worker can grasp the surface of the fixed handle 203 to facilitate the force of the worker, so that the first connecting sleeve 104 and the second connecting sleeve 201 are abutted to the surface of the pipe to roll back, when facing to the repair work of the bent pipe, the repair belt at the beginning can be firstly stripped at the bent pipe of the steel pipeline to be adhered on the surface of the bent pipe and continuously wound at the position to be repaired in a rotating way, the last circle of repair belt covers one third of the previous circle of repair belt, the repair can be ensured to be isolated in place, the surface of the pipeline is isolated from the outside, thereby having the anti-corrosion effect, the non-woven fabric layer 403 in the repair belt mechanism 4 can effectively enhance the tensile resistance of the adhesive belt body, the repair belt wound on the surface of the pipeline can not be deformed or broken, and the like, the polyester fiber material has larger rigidity, the tensile resistance of the repair belt can be further enhanced by matching with the non-woven fabric layer 403, and the polyester fiber material has elasticity and quick rebound, the repair belt has stronger recovery capability, the selected butyl rubber material is environment-friendly, causes no pollution when in use, and has stronger viscosity, and can enable the layer structures to be tightly connected together, in order to avoid the situations that the repair tape is stripped or dropped off on the surface of the pipeline, the selected PET silicone oil isolating film can ensure that the repair tape has good adsorbability and adhesiveness.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. Bury special area of overhaul of ground steel pipeline polyethylene anticorrosive coating return bend, including first baffle (1), its characterized in that: a second baffle (2) is arranged at one end of the first baffle (1), a winding wheel (3) is arranged between the first baffle (1) and the second baffle (2), and a repair belt mechanism (4) is arranged on the surface of the winding wheel (3);
the belt repairing mechanism (4) comprises a polyethylene protective film (401), a first adhesive layer (402), a non-woven fabric layer (403), a reinforcing wire layer (404), a second adhesive layer (405) and an anti-sticking isolating membrane (406), wherein the first adhesive layer (402) is arranged between the polyethylene protective film (401) and the non-woven fabric layer (403), the bottom end surface of the non-woven fabric layer (403) is fixedly connected with the reinforcing wire layer (404), the bottom end surface of the reinforcing wire layer (404) is provided with the second adhesive layer (405), the bottom end surface of the second adhesive layer (405) is fixedly connected with the anti-sticking isolating membrane (406), a bearing sleeve (101) is fixedly embedded in the middle of one end surface in the first baffle plate (1), the inside of the bearing sleeve (101) is connected with a rolling shaft (102) in a rolling manner, and a rubber grip (103) is connected to the surface of the rolling shaft (102), the utility model discloses a set up groove, including first baffle (1), the other end surface of first baffle (1) is located middle fixed mounting and has first connecting sleeve (104), the inboard fixed surface of first connecting sleeve (104) is connected with internal thread cover (105), the one end surface of second baffle (2) is located middle fixed mounting and has second connecting sleeve (201), the one end fixed surface of second connecting sleeve (201) installs thread head (202), the other end surface of second connecting sleeve (201) is located middle fixed mounting and has fixed handle (203), the surface of fixed handle (203) is close to the other end and has seted up cover establishing groove (204), the surface cover of cover establishing groove (204) is established and is connected with sponge sleeve (205), internal thread cover (105) and thread head (202) threaded connection.
2. The special band for overhauling of the polyethylene anticorrosive coating elbow pipe of the buried steel pipeline according to claim 1, which is characterized in that: the winding wheel (3) is of an I-shaped structure, and the repairing belt mechanism (4) is wound on the surface of the winding wheel (3).
3. The special band for overhauling of the polyethylene anticorrosive coating elbow pipe of the buried steel pipeline according to claim 1, which is characterized in that: the material of the reinforcing silk layer (404) is a polyester silk material, and the reinforcing silk layer (404) is bonded with the anti-sticking separation film (406).
4. The special band for overhauling of the polyethylene anticorrosive coating elbow pipe of the buried steel pipeline according to claim 1, which is characterized in that: the first adhesive layer (402) and the second adhesive layer (405) are made of butyl rubber and are in adhesive connection with the upper layer and the lower layer which are adjacent to each other.
5. The special band for overhauling of the polyethylene anticorrosive coating elbow pipe of the buried steel pipeline according to claim 1, which is characterized in that: the anti-sticking isolating film (406) is made of a PET silicone oil isolating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110841177.4A CN113480949B (en) | 2021-07-26 | 2021-07-26 | Special belt for overhauling polyethylene anticorrosive coating bent pipe of buried steel pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110841177.4A CN113480949B (en) | 2021-07-26 | 2021-07-26 | Special belt for overhauling polyethylene anticorrosive coating bent pipe of buried steel pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN113480949A CN113480949A (en) | 2021-10-08 |
| CN113480949B true CN113480949B (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110841177.4A Active CN113480949B (en) | 2021-07-26 | 2021-07-26 | Special belt for overhauling polyethylene anticorrosive coating bent pipe of buried steel pipeline |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57146619A (en) * | 1981-03-05 | 1982-09-10 | Sumitomo Electric Ind Ltd | Reinforcement method for weld part of lead coated cable |
| CN211999553U (en) * | 2020-04-21 | 2020-11-24 | 苏州强固管道防腐材料有限公司 | Polyethylene anti-corrosion adhesive tape |
| CN211999552U (en) * | 2020-04-21 | 2020-11-24 | 苏州强固管道防腐材料有限公司 | High-elongation polyethylene anti-corrosion adhesive tape |
| CN213140729U (en) * | 2020-07-13 | 2021-05-07 | 东莞市恒茂胶粘制品有限公司 | Anti-winding electronic adhesive tape |
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