CN209229230U - A kind of nanoporous aerogel delivery pipe and the crude oil pipeline using the delivery pipe - Google Patents
A kind of nanoporous aerogel delivery pipe and the crude oil pipeline using the delivery pipe Download PDFInfo
- Publication number
- CN209229230U CN209229230U CN201822147165.8U CN201822147165U CN209229230U CN 209229230 U CN209229230 U CN 209229230U CN 201822147165 U CN201822147165 U CN 201822147165U CN 209229230 U CN209229230 U CN 209229230U
- Authority
- CN
- China
- Prior art keywords
- insulating layer
- layer
- delivery pipe
- coating
- nanoporous aerogel
- 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.)
- Active
Links
- 239000004964 aerogel Substances 0.000 title claims abstract description 31
- 239000010779 crude oil Substances 0.000 title claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 68
- 238000000576 coating method Methods 0.000 claims abstract description 68
- 238000005260 corrosion Methods 0.000 claims abstract description 36
- 230000004888 barrier function Effects 0.000 claims abstract description 32
- 239000000853 adhesive Substances 0.000 claims abstract description 28
- 230000001070 adhesive effect Effects 0.000 claims abstract description 28
- 230000005855 radiation Effects 0.000 claims abstract description 28
- 239000004965 Silica aerogel Substances 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 15
- 239000004593 Epoxy Substances 0.000 claims description 10
- 230000003628 erosive effect Effects 0.000 claims description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 7
- 125000005375 organosiloxane group Chemical group 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 7
- 238000007598 dipping method Methods 0.000 claims description 5
- 239000002557 mineral fiber Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 21
- 238000010276 construction Methods 0.000 abstract description 16
- 239000010410 layer Substances 0.000 description 115
- 230000000694 effects Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000002421 anti-septic effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000314 transition metal oxide Inorganic materials 0.000 description 3
- -1 Oxo transition metal Compound Chemical class 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Thermal Insulation (AREA)
- Laminated Bodies (AREA)
Abstract
The utility model relates to a kind of nanoporous aerogel delivery pipe and use the crude oil pipeline of the delivery pipe.Nanoporous aerogel delivery pipe includes tube body, the outer surface of tube body is bonded with anti-corrosion adhesive coating, insulating layer is provided with outside anti-corrosion adhesive coating, insulating layer is externally provided with waterproof thermal-insulated coating and heat radiation barrier layer, and the insulating layer is silica aerogel insulating layer, aluminium aeroge insulating layer or zirconium aeroge insulating layer.The outside that anti-corrosion adhesive coating is coated in tube body is realized by coated adhesive mode, and then the bonding and thermal insulation layer outside anti-corrosion adhesive coating, water-proof heat-insulation layer and heat radiation barrier layer are set outside insulating layer, each layer of body is all made of for the form of construction work that plate is assembled in compared with the prior art, each layer of body is arranged using the form of construction work that bonding is combined with plate assembly is coated in the external of the utility model nanoporous aerogel delivery pipe, so that entire work progress becomes relatively simple, construction efficiency is improved.
Description
Technical field
The utility model relates to a kind of nanoporous aerogel delivery pipe and use the crude oil pipeline of the delivery pipe.
Background technique
Capital equipment of the crude oil pipeline as crude oil storage and transportation industry, is arranged by more piece delivery pipe and outer tube,
When transporting crude oil, have many advantages, such as that big freight volume, good leak tightness, at low cost and safety coefficient are high.During carried of crude oil, with
The variation of temperature, environment, large effect will cause to crude oil pipeline, as crude oil pipeline may be reduced because of temperature
Phenomena such as causing viscosity of crude to increase, and then precipitating, therefore in the production of crude oil pipeline, to crude oil pipeline
Requirement for anticorrosion it is also higher and higher, as Chinese invention patent file that Authorization Notice No. is CN106151776B disclose it is a kind of new
Type corrosion-resistant thermal insulation crude oil pipeline, pipeline body be successively arranged from inside to outside antiseptic and rustproof layer, heating layer, heat insulation layer,
Insulating moulding coating layer, waterproof antirust coat, each layer body is plate, successively wraps each layer of body in construction and is connected to pipeline body
On position from inside to outside.
It is not difficult to find that each layer of body of above-mentioned arrangement form preferably resolves bring Crude Oil Transportation due to bad environments
There is the problems such as crude oil is blocked in pipeline, precipitated in pipeline, and improves the efficiency of carried of crude oil, but there are still certain for the device
Drawback: since above-mentioned each layer of body is plate, each layer of body is successively fixed on from inside to outside in pipeline applying man-hour requirement
On ontology, and the layer body of plate structure be during early period is prefabricated and the later period assembles, and the forming process of each layer body is complicated, and
Each layer body is required to surround the shape and size being adapted to tube body when assembly, complicated for operation, construct it is cumbersome, and construction efficiency compared with
It is low.
Utility model content
The purpose of this utility model is to provide a kind of nanoporous aerogel delivery pipes, to solve conveying in the prior art
Pipe is constructed problem that is cumbersome, and then causing construction efficiency low when carrying out the installation of each plate layer body.The utility model also provides
A kind of crude oil pipeline using the delivery pipe carries out each plate layer body to solve the delivery pipe in crude oil pipeline
The problem constructed when installation cumbersome, and then cause construction efficiency low.
To achieve the goals above, nanoporous aerogel delivery pipe adopts the following technical scheme that in the utility model:
A kind of nanoporous aerogel delivery pipe, including tube body, it is characterised in that: the outer surface of tube body is bonded with anti-corrosion bonding
Coating, anti-corrosion adhesive coating are provided with insulating layer outside, and insulating layer is externally provided with waterproof thermal-insulated coating and heat radiation barrier layer, the guarantor
Warm layer is silica aerogel insulating layer, aluminium aeroge insulating layer or zirconium aeroge insulating layer.
Nanoporous aerogel delivery pipe the utility model has the advantages that being glued anti-corrosion to realize by coated adhesive mode in the utility model
The outside that coating is coated in tube body, and then the bonding and thermal insulation layer outside anti-corrosion adhesive coating are connect, waterproof is set outside insulating layer and is protected
Warm layer and heat radiation barrier layer, moreover, selecting insulating layer for silica aerogel insulating layer, aluminium aeroge insulating layer or zirconium aeroge guarantor
Warm layer has better heat insulation effect.Each layer of body is all made of the form of construction work that plate is assembled in compared with the prior art
For, the utility model nanoporous aerogel delivery pipe it is external using coating bonding with plate assemble the form of construction work that combines come
Each layer of body is set, so that entire work progress becomes relatively simple, improves construction efficiency.
Further, the insulating layer be include inorganic mineral fiber skeleton and dipping, spraying or brush be attached to inorganic mine
Aeroge on fibres skeleton keeps the temperature main body.Outside anti-corrosion adhesive coating when bonding and thermal insulation layer, main body is kept the temperature with aeroge
There is better antiseptic property and heat insulation effect for the insulating layer of important component.
Further, the anti-corrosion adhesive coating is coated in the waterborne epoxy modified acrylic on aeroge insulating layer inner wall
It is coated with erosion resistant coating.As common anti-corrosion material, waterborne epoxy modified acrylic, which is coated with erosion resistant coating, has better waterproof and guarantor
The effect of temperature.
Further, the waterproof thermal-insulated coating is coated in aeroge insulating layer outer surface, and the setting of heat radiation barrier layer is anti-
Water heat insulation coating outer surface.Waterproof thermal-insulated coating directly keeps the temperature aeroge thermal insulation water-proof, while again by heat radiation barrier layer
Protection, prevents high-temperature steam from damaging to waterproof thermal-insulated coating.
Further, the waterproof thermal-insulated coating is that water soluble acrylic acid, polyurethane and organosiloxane are coated with waterproof layer.It is aqueous
Acrylic acid, polyurethane and organosiloxane coating waterproof layer all have good waterproof thermal-insulated performance.
Further, the heat radiation barrier layer is transition metal oxide or rare earth oxide barrier layer.Oxo transition metal
Compound or rare earth oxide barrier layer are often chosen as the main of heat radiation barrier layer due to good heat radiation barriers function
Material.
The utility model Crude Oil conveyance conduit adopts the following technical scheme that:
Crude oil pipeline, including the inner and outer tubes being mutually arranged, said inner tube, that is, nanoporous aerogel delivery pipe, including
Tube body, the outer surface of tube body are bonded with anti-corrosion adhesive coating, are provided with insulating layer outside anti-corrosion adhesive coating, insulating layer is externally provided with
Waterproof thermal-insulated coating and heat radiation barrier layer, the insulating layer are silica aerogel insulating layer, aluminium aeroge insulating layer or zirconium airsetting
Glue insulating layer.
The utility model Crude Oil conveyance conduit applies the utility model has the advantages that being realized by coated adhesive mode and being bonded anti-corrosion
Layer is coated in the outside of tube body, and then the bonding and thermal insulation layer outside anti-corrosion adhesive coating, and water-proof heat-insulation layer is arranged outside insulating layer
With heat radiation barrier layer, moreover, select insulating layer for silica aerogel insulating layer, aluminium aeroge insulating layer or zirconium aeroge heat preservation
Layer has better heat insulation effect.In compared with the prior art each layer of body be all made of form of construction work that plate is assembled and
It says, external assembled using coating bonding with plate of nanoporous aerogel delivery pipe is combined in the utility model crude oil pipeline
Form of construction work each layer of body be set so that entire work progress becomes relatively simple, improve construction efficiency.
Further, the insulating layer be include inorganic mineral fiber skeleton and dipping, spraying or brush be attached to inorganic mine
Aeroge on fibres skeleton keeps the temperature main body.Outside anti-corrosion adhesive coating when bonding and thermal insulation layer, main body is kept the temperature with aeroge
There is better antiseptic property and heat insulation effect for the insulating layer of important component.
Further, the anti-corrosion adhesive coating is coated in the waterborne epoxy modified acrylic on aeroge insulating layer inner wall
It is coated with erosion resistant coating.As common anti-corrosion material, waterborne epoxy modified acrylic, which is coated with erosion resistant coating, has better waterproof and guarantor
The effect of temperature.
Further, the waterproof thermal-insulated coating is coated in aeroge insulating layer outer surface, and the setting of heat radiation barrier layer is anti-
Water heat insulation coating outer surface.Waterproof thermal-insulated coating directly keeps the temperature aeroge thermal insulation water-proof, while again by heat radiation barrier layer
Protection, prevents high-temperature steam from damaging to waterproof thermal-insulated coating.
Further, the waterproof thermal-insulated coating is that water soluble acrylic acid, polyurethane and organosiloxane are coated with waterproof layer.It is aqueous
Acrylic acid, polyurethane and organosiloxane coating waterproof layer all have good waterproof thermal-insulated performance.
Further, the heat radiation barrier layer is transition metal oxide or rare earth oxide barrier layer.Oxo transition metal
Compound or rare earth oxide barrier layer are often chosen as the main of heat radiation barrier layer due to good heat radiation barriers function
Material.
Detailed description of the invention
Fig. 1 is the outside schematic diagram of nanoporous aerogel delivery pipe in the utility model;
Description of symbols: 1- nanoporous aerogel delivery pipe, 2- anti-corrosion adhesive coating, 3- insulating layer, the waterproof thermal-insulated painting of 4-
Layer, 5- heat radiation barrier layer.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
The specific embodiment of nanoporous aerogel delivery pipe in the utility model:
As shown in Figure 1, the outer application in nanoporous aerogel delivery pipe 1 has anti-corrosion adhesive coating 2, anti-corrosion adhesive coating 2
Select the preferable waterborne epoxy modified acrylic of anti-corrosion effect to be coated with erosion resistant coating, the outside of anti-corrosion adhesive coating 2 be equipped with
Aeroge is the insulating layer 3 for keeping the temperature main body, and insulating layer 3 is plate, the specific arrangement method of anti-corrosion adhesive coating 2 and insulating layer 3
It is coated on the inner wall of insulating layer 3 for the constituent waterborne epoxy modified acrylic of anti-corrosion adhesive coating 2 is coated with erosion resistant coating,
Wherein, easy for construction since nanoporous aerogel has many advantages, such as preferable heat insulation, the insulating layer 3 of selection includes inorganic mine
The aeroge heat preservation main body being attached on inorganic mineral fiber skeleton is brushed in fibres skeleton and dipping, spraying, is specially belonged to
In one kind of nanoporous aerogel, i.e. silica aerogel insulating layer, (conveniently for statement, in the following description, with aeroge insulating layer
To replace insulating layer 3), the outer surface of aeroge insulating layer is provided with waterproof thermal-insulated coating 4 by way of coating, waterproof thermal-insulated
Coating 4 selects the preferable water soluble acrylic acid of waterproof thermal-insulated effect, polyurethane and organosiloxane coating waterproof layer, due to nanometer gas
There is a large amount of heat steams between gel delivery pipe 1 and the outer tube of outside, therefore also assemble in the outside of waterproof thermal-insulated coating 4
There is heat radiation barrier layer 5, heat radiation barrier layer 5 is plate, and heat radiation barrier layer 5 selects the preferable transition of heat radiation barriering effect
The ultra-thin layer structure of the preparations such as metal oxide or rare earth oxide.
When the utility model at work, it applies in the external of nanoporous aerogel delivery pipe 1 coated with waterborne epoxy modified acrylic
It is coated with the anti-corrosion adhesive coating 2 that anti-corrosion layer material is component part, the external mounting of anti-corrosion adhesive coating 2 is kept the temperature with silica aerogel
Layer, wherein the inside of aeroge insulating layer is that inorganic mineral fiber skeleton and dipping, spraying or brushing are attached to inorganic mineral fibre
Tie up skeleton on aeroge keep the temperature main body, and then, the outer surface of aeroge insulating layer be provided with by way of coating with
Water soluble acrylic acid, polyurethane and organosiloxane coating waterproof layer are the waterproof thermal-insulated coating 4 of component part, in waterproof thermal-insulated painting
It is also equipped with outside layer 4 with the heat radiation of the ultra-thin layer structure of the preparations such as transition metal oxide or rare earth oxide barrier layer
Barrier layer 5;The form of construction work that each layer of body is all made of plate assembly in compared with the prior art is assemblied in the outside of delivery pipe, this
Each layer of body is installed on nanoporous aerogel by the way of coating plus bonding by each corrosion-resistant thermal insulation coating in utility model
The outside of delivery pipe 1 improves construction efficiency so that entire work progress becomes relatively simple.
In the present embodiment, the outside of water-proof heat-insulation layer is arranged in heat radiation barrier layer, in other embodiments, in waterproof
In the case that the heat radiation barriering effect of insulating layer itself reaches requirement, water-proof heat-insulation layer can also be arranged in heat radiation barrier layer
Outside.
In the present embodiment, the component part of insulating layer is silica aerogel insulating layer, and silica aerogel insulating layer is nanometer gas
One kind of gel, in other embodiments, insulating layer are also possible to other kinds of nanoporous aerogel, for example, insulating layer can also
For aluminium aeroge insulating layer or zirconium aeroge insulating layer or other aeroge insulating layers.
In the present embodiment, the component part of anti-corrosion adhesive coating is that waterborne epoxy modified acrylic is coated with erosion resistant coating material
The materials such as epoxy anticorrosion paint or inorganic anti-corrosion paint can also be used in material, in other embodiments, anti-corrosion adhesive coating, to reach anti-
Rotten effect.
The specific embodiment of the utility model Crude Oil conveyance conduit:
Crude oil pipeline includes the inner and outer tubes being mutually arranged, inner tube, that is, nanoporous aerogel delivery pipe, the nanometer
The structure of aeroge delivery pipe is identical as the nanoporous aerogel delivery pipe in above-described embodiment, and details are not described herein again.
Claims (7)
1. a kind of nanoporous aerogel delivery pipe, including tube body, it is characterised in that: the outer surface of tube body is bonded with anti-corrosion bonding and applies
Layer, anti-corrosion adhesive coating are provided with insulating layer outside, and insulating layer is externally provided with waterproof thermal-insulated coating and heat radiation barrier layer, the heat preservation
Layer is silica aerogel insulating layer, aluminium aeroge insulating layer or zirconium aeroge insulating layer.
2. nanoporous aerogel delivery pipe according to claim 1, it is characterised in that: the insulating layer be include inorganic mineral
The aeroge heat preservation main body being attached on inorganic mineral fiber skeleton is brushed in fiber skeleton and dipping, spraying.
3. nanoporous aerogel delivery pipe according to claim 1 or 2, it is characterised in that: the anti-corrosion adhesive coating is to apply
Overlay on the waterborne epoxy modified acrylic coating erosion resistant coating on aeroge insulating layer inner wall.
4. nanoporous aerogel delivery pipe according to claim 1 or 2, it is characterised in that: the waterproof thermal-insulated coating coating
In aeroge insulating layer outer surface, heat radiation barrier layer is arranged in waterproof thermal-insulated coating outer surface.
5. nanoporous aerogel delivery pipe according to claim 4, it is characterised in that: the waterproof thermal-insulated coating is aqueous third
Olefin(e) acid, polyurethane and organosiloxane are coated with waterproof layer.
6. nanoporous aerogel delivery pipe according to claim 4, it is characterised in that: the heat radiation barrier layer is transition gold
Belong to oxide or rare earth oxide barrier layer.
7. crude oil pipeline, including the inner and outer tubes being mutually arranged, it is characterised in that: said inner tube is the claims
Nanoporous aerogel delivery pipe described in any one of 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822147165.8U CN209229230U (en) | 2018-12-20 | 2018-12-20 | A kind of nanoporous aerogel delivery pipe and the crude oil pipeline using the delivery pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822147165.8U CN209229230U (en) | 2018-12-20 | 2018-12-20 | A kind of nanoporous aerogel delivery pipe and the crude oil pipeline using the delivery pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209229230U true CN209229230U (en) | 2019-08-09 |
Family
ID=67508511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822147165.8U Active CN209229230U (en) | 2018-12-20 | 2018-12-20 | A kind of nanoporous aerogel delivery pipe and the crude oil pipeline using the delivery pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209229230U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594531A (en) * | 2019-09-24 | 2019-12-20 | 内蒙古伟之杰节能装备有限公司 | Rigid polyurethane spraying polyethylene winding prefabricated direct-buried heat insulation pipe and preparation method thereof |
| CN111396647A (en) * | 2020-04-13 | 2020-07-10 | 昊天节能装备有限责任公司 | Hot water pipeline capable of reducing heat loss |
-
2018
- 2018-12-20 CN CN201822147165.8U patent/CN209229230U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594531A (en) * | 2019-09-24 | 2019-12-20 | 内蒙古伟之杰节能装备有限公司 | Rigid polyurethane spraying polyethylene winding prefabricated direct-buried heat insulation pipe and preparation method thereof |
| CN111396647A (en) * | 2020-04-13 | 2020-07-10 | 昊天节能装备有限责任公司 | Hot water pipeline capable of reducing heat loss |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209229230U (en) | A kind of nanoporous aerogel delivery pipe and the crude oil pipeline using the delivery pipe | |
| CN105715912A (en) | Pipeline heat preservation structure and application thereof | |
| CN211175693U (en) | Wall-through water pipe waterproof system for tap water | |
| CN103195985A (en) | Conveying pipe with multilayer composite heat insulation structure | |
| CN201925671U (en) | Embedded pipeline | |
| CN206036491U (en) | RTP coupling | |
| CN200986066Y (en) | High efficiency energy conservation thermal insulation pipe | |
| CN205401975U (en) | Resistance to compression building materials pipe | |
| CN109114360A (en) | A kind of high and cold Pipeline joint anticorrosion structure and method | |
| CN108266579A (en) | Anti-drag heat insulation pipe in a kind of high density polyvinyl polyurethane | |
| CN206889968U (en) | A kind of waterproof prefabricated direct-buried thermal insulation pipe and its pipe fitting | |
| CN217519492U (en) | Lining PO anti-corrosion pipeline with anti-deformation effect | |
| CN204328251U (en) | The standoff compound thermal insulation pipe of a kind of band | |
| CN202769085U (en) | Embedded prestress steel cylinder concrete tube with long service life and multilayer anticorrosion treatment | |
| CN201198928Y (en) | Seal device of building wall through hole with guarding tube | |
| CN105257917A (en) | Variable-diameter type corrosion-preventing high-temperature-resisting buried composite thermal insulation pipeline and mounting method | |
| CN202546107U (en) | Hot-bending bend for phi1420 large-diameter gas pipeline | |
| CN209511301U (en) | A kind of epoxy glass fiber compound lining corrosion-proof pipe line | |
| CN205244645U (en) | Prefabricated direct -burried steam insulating tube | |
| CN212617072U (en) | Prefabricated direct-burried insulating tube with novel waterproof construction | |
| CN223203990U (en) | Novel pipeline outer anti-corrosion structure | |
| CN108266598A (en) | A kind of pipeline protection device | |
| CN102679051B (en) | Embedded type prestressed concrete cylinder pipe combining hot dip galvanizing and epoxy coal tar pitch erosion-resisting | |
| CN222067966U (en) | Multiplexing type multi-layer energy-saving heat-resistant insulation sleeve | |
| CN208041342U (en) | The stainless steel composite pipe road connected is made of stainless steel short tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |