CN108468875A - A kind of steel plastic compount steady state pipe - Google Patents
A kind of steel plastic compount steady state pipe Download PDFInfo
- Publication number
- CN108468875A CN108468875A CN201810565972.3A CN201810565972A CN108468875A CN 108468875 A CN108468875 A CN 108468875A CN 201810565972 A CN201810565972 A CN 201810565972A CN 108468875 A CN108468875 A CN 108468875A
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- China
- Prior art keywords
- steel
- layer
- plastic
- steel pipe
- steady state
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 93
- 239000010959 steel Substances 0.000 title claims abstract description 93
- 229920003023 plastic Polymers 0.000 title claims abstract description 67
- 239000004033 plastic Substances 0.000 title claims abstract description 67
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 26
- 238000002161 passivation Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 11
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 6
- 229920002492 poly(sulfone) Polymers 0.000 claims description 6
- 229920001230 polyarylate Polymers 0.000 claims description 6
- 229920002530 polyetherether ketone Polymers 0.000 claims description 6
- 229920001721 polyimide Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 235000000177 Indigofera tinctoria Nutrition 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 229940097275 indigo Drugs 0.000 claims description 3
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- LTYMSROWYAPPGB-UHFFFAOYSA-N diphenyl sulfide Chemical compound C=1C=CC=CC=1SC1=CC=CC=C1 LTYMSROWYAPPGB-UHFFFAOYSA-N 0.000 claims description 2
- 229920001596 poly (chlorostyrenes) Polymers 0.000 claims 2
- 239000005977 Ethylene Substances 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 6
- 229920001903 high density polyethylene Polymers 0.000 description 5
- 239000004700 high-density polyethylene Substances 0.000 description 5
- 229920000106 Liquid crystal polymer Polymers 0.000 description 4
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 4
- 239000004734 Polyphenylene sulfide Substances 0.000 description 3
- 229920000069 polyphenylene sulfide Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000003466 welding 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
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a kind of steel plastic compount steady state pipes, it includes inner plastic, steel pipe layer and plastic outer layer, the steel pipe layer is arranged between inner plastic and plastic outer layer, its surface is provided with organic passivation film layer, it is provided with protrusion on the inner wall of the steel pipe layer, the protrusion is arranged along the axial direction of pipeline, offers through-hole in the protrusion, the axial direction of the steel pipe layer upper edge pipeline is provided with reinforcing rib.A kind of steel plastic compount steady state pipe of the present invention, can effectively reinforce the intensity of compound pipeline complex pipeline, meanwhile, the anti-buckling strength of riser tubing.
Description
Technical field
The present invention relates to tubing technical field more particularly to a kind of steel plastic compount steady state pipes.
Background technology
Steel-plastics composite pipe has many classification, can be according to the textural classification of tubing：Steel strip reinforced steel-plastics composite pipe, seamless steel
Pipe enhances steel-plastics composite pipe, hole pattern steel band steel-plastics composite pipe and steel wire mesh frame steel-plastics composite pipe.Currently, it flows the most on the market
Capable is steel strip reinforced steel-plastics composite pipe, that is, our steel-plastic composite pressure pipes for often saying, and this tubing middle layer is high-carbon
For steel band by steel belt layer made of cans butt welding, ectonexine is high density polyethylene (HDPE) (HDPE).In this tubing
Interbed is steel band, so tubing load performance is very good, not high different from aluminium strip pressure-bearing, tubing maximum caliber can only be accomplished
The maximum caliber of 63mm, steelplastic pipe can accomplish 200mm or even bigger；Since the steel band of tubing middle layer is closed, so
This steelplastic pipe has resistance oxygen effect simultaneously, can be directly used for direct drinking water project, and its ectonexine is plastic material, is had non-
Often good corrosion resistance.So excellent performance so that the purposes of steel-plastics composite pipe is very extensive, oil, natural gas transportation, work
Pipes for mining, water drinking tube, the various fields of drainpipe etc. can see the figure of this pipe.
But existing composite metal plastic pipe is in order to cost-effective or easy to process, it will usually be opened up on steel pipe
Through-hole is integrally formed using extrusion molding mode in this way, and manufacturing process is simple, and processing cost is low, but is beaten on intermediate steel band
Many holes so that the PE combinations of ectonexine are integrally formed, although solving the Complex Problem of steel and plastics, are sacrificed
The oxygen resistance of steelplastic pipe, moreover, because the presence of steel band upper porous net, largely reduces the resistance to of this type steelplastic pipe
Compressive Strength under high pressure operations, is susceptible to tubing and locally bursts.In addition, when Steel-plastic pipeline is by radial distorted, steel modeling connects
Contact layer is easy to mutually remove, and makes Pipeline damage.
Invention content
The purpose of the present invention is to solve the shortcomings of the prior art and a kind of steel plastic compount steady state pipe is provided, can effectively add
The intensity of strong compound pipeline complex pipeline, meanwhile, the anti-buckling strength of riser tubing.
In order to achieve the above objectives, the present invention is achieved through the following technical solutions.
A kind of steel plastic compount steady state pipe, it includes inner plastic, steel pipe layer and plastic outer layer, and the steel pipe layer setting is being moulded
Expect between internal layer and plastic outer layer, surface is provided with organic passivation film layer, and protrusion, institute are provided on the inner wall of the steel pipe layer
The axial direction that protrusion is stated along pipeline is arranged, and through-hole, the axial direction of the steel pipe layer upper edge pipeline are offered in the protrusion
It is provided with reinforcing rib.
Further, the steel pipe layer is hot galvanized steel pipe.
Further, the shape of the through-hole is round, isosceles triangle, any one or more in ellipse.
Further, the through-hole is uniformly distributed setting along the axial direction of steel pipe, and the through-hole is equal on the cross section of steel pipe
Even distribution is arranged and setting number is greater than or equal to 3.
Further, the reinforcing rib is arranged between adjacent through-holes, and the cross section of the reinforcing rib is in I-shaped, institute
The side for stating reinforcing rib is that the radian of arc and arc is pi/2.
Further, the top surface of the reinforcing rib is cambered surface and the concyclic heart is justified in the section of the cambered surface and steel pipe layer.
Further, be provided with the second steel pipe layer in the plastic outer layer, the second reinforcing rib of second steel pipe layer with
The reinforcing rib of steel pipe layer is interspersed on the cross section of pipeline.
Further, the inner plastic is polyvinyl chloride material.
Further, the plastic outer layer polyvinyl chloride material, polytetrafluoroethylene (PTFE), rubber, phenolic resin, diphenyl sulfide
(PPS), appointing in polysulfones (PSF), polyimides (PI), polyarylate (PAR), liquid crystal polymer (LCP), polyether-ether-ketone (PEEK)
It anticipates one or more.
Further, the plastic outer layer is any one in red, orange, yellow, green, blue, indigo, purple or multiple color group
The material of conjunction.
A kind of steel plastic compount steady state pipe of the present invention, can effectively reinforce the intensity of compound pipeline complex pipeline, meanwhile, riser tubing
Anti-buckling strength.
Description of the drawings
Fig. 1 is the cross-sectional view of the present invention；
Fig. 2 is the cross-sectional view of the example 2 of the present invention；
In figure：1, inner plastic；2, steel pipe layer；3, plastic outer layer；21, through-hole；22, reinforcing rib；23, raised；24, organic
Passivation film；4, the second steel pipe layer；41, the second through-hole；42, the second reinforcing rib.
Specific implementation mode
With reference to embodiment, the present invention will be further described, but is not limited to the content on specification.
Example 1, as shown in Figure 1：A kind of steel plastic compount steady state pipe, it includes inner plastic 1, steel pipe layer 2 and plastic outer layer 3,
Steel pipe layer 2 is arranged between inner plastic 1 and plastic outer layer 3.
Steel pipe layer 2 is hot galvanized steel pipe, and the surface of galvanizing is provided with organic passivation film layer 24, and the surface of galvanizing uses
Organic passivation agent Passivation Treatment, on the one hand can enhance the corrosion resistance of steel pipe layer 2, on the other hand can enhance steel pipe layer 2
Viscosity between surface and inner plastic 1, plastic outer layer 3 is bonded intensity convenient for steel pipe layer 2 with inner plastic 1, plastic outer layer 3
Higher.
The axial direction of the inner wall upper edge pipeline of steel pipe layer 2 is provided with protrusion 23, and through-hole 21 is offered in protrusion 23, through-hole 21
Shape can be round, isosceles triangle, any one or more in ellipse.The setting of through-hole 21 passes through logical convenient for extrusion molding glue
Hole 21, extrusion molding glue and steel pipe interior outside one extrusion moulding.
Through-hole 21 is uniformly distributed setting along the axial direction of steel pipe layer 2, and through-hole 21 is uniformly distributed on 2 cross section of steel pipe layer and sets
It sets, it is 3 that number, which is arranged, at least in through-hole 21 on 2 cross section of steel pipe layer, and the axial direction of 2 upper edge steel pipe layer 2 of steel pipe layer, which is provided with, to be added
Strengthening tendons 22, reinforcing rib 22 are arranged between adjacent through-holes 21, and the cross section of reinforcing rib 22 is in I-shaped, and the side of reinforcing rib 22 is
The radian of arc, arc is pi/2, and the top surface of reinforcing rib 22 is cambered surface, and the concyclic heart of section circle of the cambered surface and steel pipe layer 2 is this
The side setting of arc can be such that plastic outer layer 3 and steel pipe layer 2 being engaged tightly is integrated, when pipeline is by radially outward force
It waits, damage is not easily disconnected between plastic outer layer 3 and steel pipe layer 2, meanwhile, the top surface of reinforcing rib 22 can make to add for the setting of cambered surface
Strengthening tendons 22 are matched with shaping grinding apparatus, do not influence extrusion moulding, while playing a role with protrusion 23, can reinforce pipeline
Intensity, the anti-load-carrying ability of riser tubing.
Inner plastic 1 is high density polyvinyl-chloride material, and high density polyethylene (HDPE) is a kind of opaque white color waxy material, than
It is again lighter than water, it is 0.941~0.960 with water proportion, soft and flexible, but it is slightly harder than LDPE, also can slightly it extend, it is nontoxic,
It is tasteless.Its characteristic：Acid and alkali-resistance, organic solvent-resistant, electrical insulating property is excellent, when low temperature, remains to keep certain toughness.Surface is hard
Degree, tensile strength, the mechanical strengths such as rigidity are more excellent.
Plastic outer layer 2 is also high density polyvinyl-chloride material；Or be resistant material, such as polytetrafluoroethylene (PTFE), rubber,
Phenolic resin etc.；Or heat-resisting material, such as polyphenylene sulfide (PPS), polysulfones (PSF), polyimides (PI), polyarylate
(PAR), liquid crystal polymer (LCP), polyether-ether-ketone (PEEK) etc..In order to apply in different field, such as the pipe distinguished with color
The color in road field, plastic outer layer 3 is alternatively the combination of one or more of red, orange, yellow, green, blue, indigo, purple.
Example 2 can be arranged one again as shown in Fig. 2, in order to be suitble to use in the pipeline of Large Diameter Pipeline in plastic outer layer 3
The structure of second steel pipe layer 4, the second steel pipe layer 4 is identical as the structure of steel pipe layer 2, but the second reinforcing rib of the second steel pipe layer 4
42 are interspersed shape, i.e., on the transversal disc of steel pipe, the second steel with the reinforcing rib 22 of steel pipe layer 2 on the cross section of pipeline
The center of circle of the second reinforcing rib 42 and the 21 transversal disc of line piping of through-hole of steel pipe layer 2 of tube layer 4, the of the second steel pipe layer 4
The center of circle of two through-holes 41 and the transversal disc of line piping of the reinforcing rib 22 of steel pipe layer 2.This set can make two steel pipes
The different place of intensity of layer is complementary to one another, and enhances the intensity of pipeline entirety, and during manufacturing, it is only necessary to having been provided with steel
The pipeline of tube layer adds steel pipe extrusion moulding again, similarly, can according to the actual application, in certain special dimensions,
When very big to the strength demand of pipeline, steel pipe layer can be added repeatedly, ensure the intensity of pipeline.
A kind of steel plastic compount steady state pipe of the present invention, can effectively reinforce the intensity of compound pipeline complex pipeline, meanwhile, riser tubing
Anti-buckling strength.
Obviously, the above embodiment of the invention be only to clearly illustrate example of the present invention, and not be
Restriction to embodiments of the present invention.For those of ordinary skill in the art, on the basis of the above description also
It can make other variations or changes in different ways.Here all embodiments can not be exhaustive.It is every to belong to this
Row of the obvious changes or variations that the technical solution of invention is extended out still in protection scope of the present invention.
Claims (10)
1. a kind of steel plastic compount steady state pipe, it is characterised in that：It includes inner plastic (1), steel pipe layer (2) and plastic outer layer (3),
The steel pipe layer (2) is arranged between inner plastic (1) and plastic outer layer (3), and surface is provided with organic passivation film layer (24),
It is provided on the inner wall of the steel pipe layer (2) raised (23), the protrusion (23) is arranged along the axial direction of pipeline, the protrusion
(23) through-hole (21) is offered on, the axial direction of steel pipe layer (2) the upper edge pipeline is provided with reinforcing rib (22).
2. a kind of steel plastic compount steady state pipe according to claim 1, it is characterised in that：The steel pipe layer (2) is heat
Coating steel pipe.
3. a kind of steel plastic compount steady state pipe according to claim 1, it is characterised in that：The shape of the through-hole (21) is circle
Shape, isosceles triangle, ellipse in any one or more.
4. a kind of steel plastic compount steady state pipe according to claim 1, it is characterised in that：Axis of the through-hole (21) along steel pipe
To setting is uniformly distributed, the through-hole (21) is uniformly distributed setting on the cross section of steel pipe and setting number is greater than or equal to 3
It is a.
5. a kind of steel plastic compount steady state pipe according to claim 1, it is characterised in that：The reinforcing rib (22) is arranged in phase
Between adjacent through-hole (21), the cross section of the reinforcing rib (22) in I-shaped, the side of the reinforcing rib (22) be arc and
The radian of arc is pi/2.
6. a kind of steel plastic compount steady state pipe according to claim 5, it is characterised in that：The top surface of the reinforcing rib (22) is
The concyclic heart is justified in the section of cambered surface and the cambered surface and steel pipe layer (2).
7. a kind of steel plastic compount steady state pipe according to claim 1, it is characterised in that：Setting in the plastic outer layer (3)
There is the second steel pipe layer (4), the second reinforcing rib (42) of second steel pipe layer (4) is with the reinforcing rib (22) of steel pipe layer (2) in pipe
It is interspersed on the cross section in road.
8. a kind of steel plastic compount steady state pipe according to claim 1, it is characterised in that：The inner plastic (1) is polychlorostyrene
Ethylene material.
9. a kind of steel plastic compount steady state pipe according to claim 1, it is characterised in that：Plastic outer layer (3) the polychlorostyrene second
Alkene, polytetrafluoroethylene (PTFE), rubber, phenolic resin, diphenyl sulfide (PPS), polysulfones (PSF), polyimides (PI), polyarylate (PAR), liquid
Any one or more in crystalline polymer (LCP), polyether-ether-ketone (PEEK).
10. a kind of steel plastic compount steady state pipe according to claim 1, it is characterised in that：The plastic outer layer (3) be it is red,
Orange, yellow, green, blue, indigo, it is purple in any one or multiple color combination material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810565972.3A CN108468875A (en) | 2018-06-04 | 2018-06-04 | A kind of steel plastic compount steady state pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810565972.3A CN108468875A (en) | 2018-06-04 | 2018-06-04 | A kind of steel plastic compount steady state pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108468875A true CN108468875A (en) | 2018-08-31 |
Family
ID=63262005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810565972.3A Pending CN108468875A (en) | 2018-06-04 | 2018-06-04 | A kind of steel plastic compount steady state pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108468875A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524347A (en) * | 2020-11-26 | 2021-03-19 | 江西爱森德实业有限公司 | High-strength corrosion-resistant polyethylene composite pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434509Y (en) * | 2000-08-07 | 2001-06-13 | 李志雄 | Steel/plastic compound tube |
| CN2612856Y (en) * | 2002-04-30 | 2004-04-21 | 李志雄 | A reinforced plating steel-plastic compound tube |
| CN1800690A (en) * | 2005-12-25 | 2006-07-12 | 蔡海华 | Steel-plastic composite pipe with convex hole on framework |
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| CN202992420U (en) * | 2012-11-12 | 2013-06-12 | 湖北汇烽塑管有限公司 | High-pressure-resistant multi-element PE (polyethylene) plastic composite pipe |
| CN203757204U (en) * | 2014-04-08 | 2014-08-06 | 湖南工业大学 | Heat insulation delivery pipeline |
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| CN104197125A (en) * | 2014-09-26 | 2014-12-10 | 安徽正石新型建材有限公司 | High-flexibility composite tube |
| CN205136854U (en) * | 2015-09-25 | 2016-04-06 | 江苏彰钰不锈钢工业有限公司 | Stainless steel covers moulds conduit bridge joint |
| CN206988599U (en) * | 2017-05-10 | 2018-02-09 | 河南远塑管业有限公司 | A kind of weatherable type pvc pipe |
| CN208348697U (en) * | 2018-06-04 | 2019-01-08 | 谭连平 | A kind of steel plastic compount steady state pipe |
-
2018
- 2018-06-04 CN CN201810565972.3A patent/CN108468875A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434509Y (en) * | 2000-08-07 | 2001-06-13 | 李志雄 | Steel/plastic compound tube |
| CN2612856Y (en) * | 2002-04-30 | 2004-04-21 | 李志雄 | A reinforced plating steel-plastic compound tube |
| CN2797818Y (en) * | 2005-02-24 | 2006-07-19 | 于瑞仁 | Plastic composite pipeline |
| CN1800690A (en) * | 2005-12-25 | 2006-07-12 | 蔡海华 | Steel-plastic composite pipe with convex hole on framework |
| CN202992420U (en) * | 2012-11-12 | 2013-06-12 | 湖北汇烽塑管有限公司 | High-pressure-resistant multi-element PE (polyethylene) plastic composite pipe |
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| CN203831877U (en) * | 2014-05-08 | 2014-09-17 | 四川煌盛管业有限公司 | Plastic laminated steel belt |
| CN104197125A (en) * | 2014-09-26 | 2014-12-10 | 安徽正石新型建材有限公司 | High-flexibility composite tube |
| CN205136854U (en) * | 2015-09-25 | 2016-04-06 | 江苏彰钰不锈钢工业有限公司 | Stainless steel covers moulds conduit bridge joint |
| CN206988599U (en) * | 2017-05-10 | 2018-02-09 | 河南远塑管业有限公司 | A kind of weatherable type pvc pipe |
| CN208348697U (en) * | 2018-06-04 | 2019-01-08 | 谭连平 | A kind of steel plastic compount steady state pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524347A (en) * | 2020-11-26 | 2021-03-19 | 江西爱森德实业有限公司 | High-strength corrosion-resistant polyethylene composite pipe |
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