CN113028156B - Steel band reinforced spiral corrugated pipe and production process thereof - Google Patents
Steel band reinforced spiral corrugated pipe and production process thereof Download PDFInfo
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- CN113028156B CN113028156B CN202110394290.2A CN202110394290A CN113028156B CN 113028156 B CN113028156 B CN 113028156B CN 202110394290 A CN202110394290 A CN 202110394290A CN 113028156 B CN113028156 B CN 113028156B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 65
- 239000010959 steel Substances 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- -1 polyethylene Polymers 0.000 claims abstract description 150
- 239000004698 Polyethylene Substances 0.000 claims abstract description 148
- 229920000573 polyethylene Polymers 0.000 claims abstract description 148
- 229920003023 plastic Polymers 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims abstract description 20
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 17
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 16
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000013530 defoamer Substances 0.000 claims abstract description 11
- 239000003063 flame retardant Substances 0.000 claims abstract description 11
- 239000003112 inhibitor Substances 0.000 claims abstract description 11
- 238000005498 polishing Methods 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 130
- 239000011247 coating layer Substances 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 7
- 239000000084 colloidal system Substances 0.000 claims description 5
- 229940079919 digestives enzyme preparation Drugs 0.000 claims description 5
- 239000003995 emulsifying agent Substances 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims description 4
- 229940059260 amidate Drugs 0.000 claims description 4
- MGFRKBRDZIMZGO-UHFFFAOYSA-N barium cadmium Chemical compound [Cd].[Ba] MGFRKBRDZIMZGO-UHFFFAOYSA-N 0.000 claims description 4
- 238000005422 blasting Methods 0.000 claims description 4
- NPUKDXXFDDZOKR-LLVKDONJSA-N etomidate Chemical compound CCOC(=O)C1=CN=CN1[C@H](C)C1=CC=CC=C1 NPUKDXXFDDZOKR-LLVKDONJSA-N 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- SLETZFVTVXVPLS-UHFFFAOYSA-N [Zn].[Cd].[Ba] Chemical compound [Zn].[Cd].[Ba] SLETZFVTVXVPLS-UHFFFAOYSA-N 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims description 3
- SHLNMHIRQGRGOL-UHFFFAOYSA-N barium zinc Chemical compound [Zn].[Ba] SHLNMHIRQGRGOL-UHFFFAOYSA-N 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000006084 composite stabilizer Substances 0.000 claims description 3
- 239000002932 luster Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229940065285 cadmium compound Drugs 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F16L9/00—Rigid pipes
- F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
- F16L9/165—Rigid pipes wound from sheets or strips, with or without reinforcement of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of spiral corrugated pipes, and discloses a steel band reinforced spiral corrugated pipe, which comprises a polyethylene outer layer, a polyethylene inner layer and a steel band layer, wherein the polyethylene outer layer and the polyethylene inner layer form a polyethylene wrapping layer, the polyethylene outer layer is integrally formed outside the polyethylene inner layer, the steel band layer is embedded in the polyethylene outer layer, the steel band layer is fixedly adhered to the polyethylene outer layer, and the polyethylene wrapping layer comprises the following components: polyethylene, smooth powder, flame retardant, plastic antioxidant, heat stabilizer, mildew inhibitor and defoamer; the polyethylene inner layer and the polyethylene outer layer which are formed preliminarily are smooth and flat in surface, the polyethylene inner layer and the polyethylene outer layer are treated through the polishing device, the left side of the upper surface of the polyethylene outer layer is frosted, the right side of the lower surface of the polyethylene inner layer is frosted, when the polyethylene inner layer is wound, the right side of the polyethylene inner layer is rolled to the left side of the upper surface of the polyethylene outer layer, and the two frosted surfaces are mutually contacted and thermally fused.
Description
Technical Field
The invention relates to the technical field of spiral corrugated pipes, in particular to a steel strip reinforced spiral corrugated pipe and a production process thereof.
Background
The steel belt reinforced PE spiral corrugated pipe is a double-wall spiral corrugated pipe which takes high-density Polyethylene (PE) as a matrix, takes a waveform formed by steel belt coated with adhesive resin on the surface as a main supporting structure, and is wound and compounded with polyethylene materials into a whole, wherein the compounding of all layers is carried out in a molten state of plastics. The pipe is suitable for medium long-term temperature not more than 45 ℃.
The traditional steel band reinforced corrugated pipe process has the defects that the steel band layer is made of metal, the inner layer and the outer layer of polyethylene are made of plastic, so that the adhesion strength of the steel band layer and the outer layer of polyethylene is improved in the market at present, the process is troublesome, the cost is greatly improved, in addition, the corrugated pipe is produced in a spiral winding mode, in the spiral winding process, the two layers are adhered to each other, the defect exists, and the phenomenon of infirm adhesion exists, so that the steel band reinforced spiral corrugated pipe and the production process thereof are to be improved.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides a steel band reinforced spiral corrugated pipe and a production process thereof, and solves the problems in the prior art.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: the steel band reinforced spiral corrugated pipe comprises a polyethylene outer layer, a polyethylene inner layer and a steel band layer, wherein the polyethylene outer layer and the polyethylene inner layer form a polyethylene wrapping layer, the polyethylene outer layer is integrally formed outside the polyethylene inner layer, a steel band layer is embedded in the polyethylene outer layer, and the steel band layer is fixedly adhered to the polyethylene outer layer;
the polyethylene wrapping layers comprise the following components: polyethylene, smooth powder, flame retardant, plastic antioxidant, heat stabilizer, mildew inhibitor and defoamer.
Preferably, the smooth powder in the polyethylene coating layer consists of various natural edible colloids, enzyme preparations and emulsifying agents.
Preferably, in the polyethylene coating layer, the heat stabilizer is one of a liquid barium zinc compound, a liquid calcium zinc stabilizer, a liquid barium cadmium compound stabilizer or a liquid barium cadmium zinc compound verification agent.
Preferably, in the polyethylene coating layer, the plastic antioxidant is any two of alkylphenol, amidate and aromatic amine compound.
Preferably, the polyethylene coating layer comprises the following components in parts by weight: 100-150 parts of polyethylene, 30-40 parts of refreshing powder, 20-50 parts of flame retardant, 10-30 parts of plastic antioxidant, 5-15 parts of heat stabilizer, 5-10 parts of mildew inhibitor and 10-25 parts of defoamer.
The invention also provides a production process of the steel band reinforced spiral corrugated pipe, which comprises the following preparation steps:
s1, weighing the polyethylene wrapping layer by using an electronic scale;
s2, placing the component materials into a mixer for fully mixing;
S3, injecting the materials into a forming machine to prepare a polyethylene inner layer and a polyethylene outer layer;
s4, polishing the right side of the lower surface of the polyethylene inner layer into a frosted shape, and polishing the left side of the upper surface of the polyethylene outer layer into a frosted shape for later use;
s5, adopting a bending machine to roll up the left side and the right side of the steel belt layer;
s6, shot blasting on the surface of the steel belt layer to expose metallic luster, spraying antirust paint on the surface of the steel belt layer, and air-drying for later use;
S7, placing the steel belt layer on the left side of the polyethylene outer layer, and curling the polyethylene outer layer and the polyethylene inner layer into a ring shape after the polyethylene outer layer and the polyethylene inner layer are bonded by hot melting.
(III) beneficial effects
The invention provides a steel band reinforced spiral corrugated pipe and a production process thereof, which have the following beneficial effects:
(1) According to the invention, the surfaces of the polyethylene inner layer and the polyethylene outer layer which are formed preliminarily are smooth and flat, the polishing device is used for treating the polyethylene inner layer and the polyethylene outer layer, the left side of the upper surface of the polyethylene outer layer is frosted, the right side of the lower surface of the polyethylene inner layer is frosted, when the polyethylene inner layer is wound, the right side of the polyethylene inner layer is rolled to the left side of the upper surface of the polyethylene outer layer, the two frosted surfaces are mutually contacted and thermally fused, the frosted surfaces are firmly adhered, and the friction force is large.
(2) According to the invention, the two sides of the steel belt layer are rolled up together and are provided with the hooks, when the steel belt layer is wrapped on the polyethylene outer layer, a part of the polyethylene outer layer is hooked in the hooks rolled up by the steel belt layer, the steel belt layer and the polyethylene outer layer are not easy to separate, the process is simple, and the effect is obvious.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of the present invention;
FIG. 3 is a schematic view of the structure of the steel belt layer before the steel belt layer is processed.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1-3, the present invention provides a technical solution: the steel band reinforced spiral corrugated pipe comprises a polyethylene outer layer, a polyethylene inner layer and a steel band layer, wherein the polyethylene outer layer and the polyethylene inner layer form a polyethylene wrapping layer, the polyethylene outer layer is integrally formed outside the polyethylene inner layer, the steel band layer is embedded in the polyethylene outer layer, and the steel band layer is fixedly adhered to the polyethylene outer layer;
The polyethylene coating layers all comprise the following components: polyethylene, smooth powder, flame retardant, plastic antioxidant, heat stabilizer, mildew inhibitor and defoamer.
Further, in the polyethylene coating layer, the refreshing and sliding powder consists of various natural edible colloids, enzyme preparations and emulsifying agents.
Further, in the polyethylene coating layer, the heat stabilizer is a liquid barium-zinc compound and a liquid calcium-zinc stabilizer which are combined.
Further, in the polyethylene coating layer, the plastic antioxidant is alkylphenol or amidate.
Further, the polyethylene coating layer comprises the following components in parts by weight: 100 parts of polyethylene, 30 parts of refreshing powder, 20 parts of flame retardant, 10 parts of plastic antioxidant, 5 parts of heat stabilizer, 5 parts of mildew inhibitor and 10 parts of defoamer.
Example 2
As shown in fig. 1-3, the present invention provides a technical solution: the steel band reinforced spiral corrugated pipe comprises a polyethylene outer layer, a polyethylene inner layer and a steel band layer, wherein the polyethylene outer layer and the polyethylene inner layer form a polyethylene wrapping layer, the polyethylene outer layer is integrally formed outside the polyethylene inner layer, the steel band layer is embedded in the polyethylene outer layer, and the steel band layer is fixedly adhered to the polyethylene outer layer;
The polyethylene coating layers all comprise the following components: polyethylene, smooth powder, flame retardant, plastic antioxidant, heat stabilizer, mildew inhibitor and defoamer.
Further, in the polyethylene coating layer, the refreshing and sliding powder consists of various natural edible colloids, enzyme preparations and emulsifying agents.
Further, in the polyethylene coating layer, the heat stabilizer is two kinds of liquid barium-cadmium composite stabilizer and liquid barium-cadmium-zinc composite verification agent.
Further, in the polyethylene coating layer, the plastic antioxidant is an amidate or an aromatic amine compound.
Further, the polyethylene coating layer comprises the following components in parts by weight: 150 parts of polyethylene, 40 parts of refreshing powder, 50 parts of flame retardant, 30 parts of plastic antioxidant, 15 parts of heat stabilizer, 10 parts of mildew inhibitor and 25 parts of defoamer.
Example 3
As shown in fig. 1-3, the present invention provides a technical solution: the steel band reinforced spiral corrugated pipe comprises a polyethylene outer layer, a polyethylene inner layer and a steel band layer, wherein the polyethylene outer layer and the polyethylene inner layer form a polyethylene wrapping layer, the polyethylene outer layer is integrally formed outside the polyethylene inner layer, the steel band layer is embedded in the polyethylene outer layer, and the steel band layer is fixedly adhered to the polyethylene outer layer;
The polyethylene coating layers all comprise the following components: polyethylene, smooth powder, flame retardant, plastic antioxidant, heat stabilizer, mildew inhibitor and defoamer.
Further, in the polyethylene coating layer, the refreshing and sliding powder consists of various natural edible colloids, enzyme preparations and emulsifying agents.
Further, in the polyethylene coating layer, the heat stabilizer is two kinds of liquid calcium-zinc stabilizer and liquid barium-cadmium composite stabilizer.
Further, in the polyethylene coating layer, the plastic antioxidant is alkylphenol or aromatic amine compound.
Further, the polyethylene coating layer comprises the following components in parts by weight: 125 parts of polyethylene, 35 parts of refreshing powder, 35 parts of flame retardant, 20 parts of plastic antioxidant, 10 parts of heat stabilizer, 7.5 parts of mildew inhibitor and 17.5 parts of defoamer.
The invention also provides a production process of the steel band reinforced spiral corrugated pipe, which comprises the following preparation steps:
s1, weighing the polyethylene wrapping layer by using an electronic scale;
s2, placing the component materials into a mixer for fully mixing;
S3, injecting the materials into a forming machine to prepare a polyethylene inner layer and a polyethylene outer layer;
s4, polishing the right side of the lower surface of the polyethylene inner layer into a frosted shape, and polishing the left side of the upper surface of the polyethylene outer layer into a frosted shape for later use;
s5, adopting a bending machine to roll up the left side and the right side of the steel belt layer;
s6, shot blasting on the surface of the steel belt layer to expose metallic luster, spraying antirust paint on the surface of the steel belt layer, and air-drying for later use;
S7, placing the steel belt layer on the left side of the polyethylene outer layer, and curling the polyethylene outer layer and the polyethylene inner layer into a ring shape after the polyethylene outer layer and the polyethylene inner layer are bonded by hot melting.
The plastic antioxidant can delay the decomposition of plastic due to oxidation, prolong the service life of the corrugated pipe, ensure that the steel surface is not smooth due to the shot blasting of the steel belt layer, and present certain concave-convex feel on the steel surface, and the subsequent spraying of the antirust paint can ensure that the paint surface is better attached to the steel surface, thereby minimizing the contact between air and the steel belt.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a steel band reinforcing helical bellows which characterized in that: the polyethylene coating comprises a polyethylene outer layer, a polyethylene inner layer and a steel belt layer, wherein the polyethylene outer layer and the polyethylene inner layer form a polyethylene wrapping layer, the polyethylene outer layer is integrally formed outside the polyethylene inner layer, the steel belt layer is embedded in the polyethylene outer layer, and the steel belt layer is fixedly adhered to the polyethylene outer layer;
the polyethylene wrapping layers comprise the following components: polyethylene, smooth powder, flame retardant, plastic antioxidant, heat stabilizer, mildew inhibitor and defoamer;
A production process of a steel band reinforced spiral corrugated pipe is characterized by comprising the following steps of: the preparation method comprises the following preparation steps:
s1, weighing the polyethylene wrapping layer by using an electronic scale;
s2, placing the component materials into a mixer for fully mixing;
S3, injecting the materials into a forming machine to prepare a polyethylene inner layer and a polyethylene outer layer;
s4, polishing the right side of the lower surface of the polyethylene inner layer into a frosted shape, and polishing the left side of the upper surface of the polyethylene outer layer into a frosted shape for later use;
s5, adopting a bending machine to roll up the left side and the right side of the steel belt layer;
s6, shot blasting on the surface of the steel belt layer to expose metallic luster, spraying antirust paint on the surface of the steel belt layer, and air-drying for later use;
S7, placing the steel belt layer on the left side of the polyethylene outer layer, and curling the polyethylene outer layer and the polyethylene inner layer into a ring shape after the polyethylene outer layer and the polyethylene inner layer are bonded by hot melting.
2. A steel strip reinforced helical bellows according to claim 1, characterized in that: the smooth powder in the polyethylene coating layer consists of various natural edible colloids, enzyme preparations and emulsifying agents.
3. A steel strip reinforced helical bellows according to claim 1, characterized in that: in the polyethylene coating layer, the heat stabilizer is one of a liquid barium zinc compound, a liquid calcium zinc stabilizer, a liquid barium cadmium composite stabilizer or a liquid barium cadmium zinc composite verification agent.
4. A steel strip reinforced helical bellows according to claim 1, characterized in that: in the polyethylene coating layer, the plastic antioxidant is any two of alkylphenol, amidate and aromatic amine compound.
5. A steel strip reinforced helical bellows according to claim 1, characterized in that: the polyethylene coating layer comprises the following components in parts by weight: 100-150 parts of polyethylene, 30-40 parts of refreshing powder, 20-50 parts of flame retardant, 10-30 parts of plastic antioxidant, 5-15 parts of heat stabilizer, 5-10 parts of mildew inhibitor and 10-25 parts of defoamer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202110394290.2A CN113028156B (en) | 2021-04-13 | 2021-04-13 | Steel band reinforced spiral corrugated pipe and production process thereof |
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CN202110394290.2A CN113028156B (en) | 2021-04-13 | 2021-04-13 | Steel band reinforced spiral corrugated pipe and production process thereof |
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CN113028156A CN113028156A (en) | 2021-06-25 |
CN113028156B true CN113028156B (en) | 2024-04-19 |
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CN110696456A (en) * | 2019-09-23 | 2020-01-17 | 镇江荣诚管业有限公司 | Polyethylene pipe for underground coal mine and preparation process thereof |
CN210318871U (en) * | 2019-04-18 | 2020-04-14 | 湖北省峰华科技有限公司 | High-strength steel strip reinforced corrugated pipe |
CN111810733A (en) * | 2020-07-29 | 2020-10-23 | 上海瑞皇管业科技股份有限公司 | Reinforced polyethylene winding composite pipe |
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2021
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CN102052526A (en) * | 2009-11-03 | 2011-05-11 | 甘国工 | Double-wall corrugated pipe formed through winding and provided with metal framework reinforcement and manufacturing method thereof |
CN203147081U (en) * | 2013-01-29 | 2013-08-21 | 山东红日管业科技有限公司 | Steel belt reinforced polyethylene helically-corrugated pipe |
CN203831877U (en) * | 2014-05-08 | 2014-09-17 | 四川煌盛管业有限公司 | Plastic laminated steel belt |
CN204226886U (en) * | 2014-09-29 | 2015-03-25 | 江西金阳管业有限公司 | A kind of steel band reinforced spiral ripple pipe |
CN104500874A (en) * | 2014-12-19 | 2015-04-08 | 黄文鹏 | Steel belt and reinforced polyvinyl chloride helical bellow and production method thereof |
CN104633310A (en) * | 2014-12-30 | 2015-05-20 | 合肥迈利网络科技有限公司 | Helical bellows |
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CN108194719A (en) * | 2018-01-08 | 2018-06-22 | 扬州市勘测设计研究院有限公司 | A kind of connection structure of winding pipe and attaching method thereof |
CN210318871U (en) * | 2019-04-18 | 2020-04-14 | 湖北省峰华科技有限公司 | High-strength steel strip reinforced corrugated pipe |
CN110696456A (en) * | 2019-09-23 | 2020-01-17 | 镇江荣诚管业有限公司 | Polyethylene pipe for underground coal mine and preparation process thereof |
CN111810733A (en) * | 2020-07-29 | 2020-10-23 | 上海瑞皇管业科技股份有限公司 | Reinforced polyethylene winding composite pipe |
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CN113028156A (en) | 2021-06-25 |
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