CN209786759U - Anti-blocking power pipeline - Google Patents

Anti-blocking power pipeline Download PDF

Info

Publication number
CN209786759U
CN209786759U CN201920812727.8U CN201920812727U CN209786759U CN 209786759 U CN209786759 U CN 209786759U CN 201920812727 U CN201920812727 U CN 201920812727U CN 209786759 U CN209786759 U CN 209786759U
Authority
CN
China
Prior art keywords
power pipeline
electric power
pipe
bent pipe
pipeline main
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.)
Expired - Fee Related
Application number
CN201920812727.8U
Other languages
Chinese (zh)
Inventor
张立萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weifang Zhongxinda Composite Material Co Ltd
Original Assignee
Weifang Zhongxinda Composite Material Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Weifang Zhongxinda Composite Material Co Ltd filed Critical Weifang Zhongxinda Composite Material Co Ltd
Priority to CN201920812727.8U priority Critical patent/CN209786759U/en
Application granted granted Critical
Publication of CN209786759U publication Critical patent/CN209786759U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

The utility model discloses a prevent electric power pipeline of jam, including the electric power pipeline main part, the electric power pipeline inner tube is installed to the inboard of electric power pipeline main part, the bellows is installed in the outside of electric power pipeline main part, the one end of electric power pipeline inner tube is installed and is prevented blockking up the end cap, prevent blockking up the one end of end cap and install first spiral shell head, the butt joint plate is all installed to the other end of second diversion return bend and first diversion return bend, fixed auris on the both sides of second diversion return bend and first diversion return bend are all installed, install the slide bar on the fixed auris on the side, the electric power pipeline main part sets up to the modified polypropylene layer, the electric power pipeline inner tube sets up to. The utility model discloses an electric power pipeline is formed by electric power pipeline main part and electric power pipeline inner tube combination, and installs the bellows in the outside of electric power pipeline main part, installs the electric power pipeline inner tube at the inboard both ends of electric power pipeline main part, and the electric power pipeline main part is made through modified polypropylene layer and is formed, has good electrical insulation through modified polypropylene layer, and modified polypropylene layer has higher heat altered shape temperature and low temperature impact property.

Description

Anti-blocking power pipeline
Technical Field
The utility model relates to a power pipeline technical field specifically is a prevent electric power pipeline of jam.
Background
The electric power tube is a product which is coated inside and outside by PE (modified polyethylene) through hot dip coating or epoxy resin, has excellent corrosion resistance, has good electrical insulation property, does not generate electric erosion, has low water absorption, high mechanical strength and small friction coefficient, can achieve the purpose of long-term use, and can effectively prevent the damage of plant root systems and soil environmental stress, and the like, and the electric power industry belongs to the public service industry and is operated in a monopoly mode for a long time.
However, the production competitiveness of the power tube is enhanced due to the advantages of convenient connection and simple and convenient maintenance, the CPVC power tube is usually used as a cable protection tube, the CPVC power tube has the characteristics of high strength, good flexibility, high temperature resistance, corrosion resistance, flame retardance, good insulating property, no pollution, difficult aging, light weight, convenient construction and the like, all performance indexes of the CPVC power tube reach or exceed the level of domestic similar products through national grade, provincial detection, identification and certification, and the performance of the CPVC power tube is greatly superior to that of the traditional asbestos cable calandria and common PVC pipes and is an ideal substitute for the traditional power cable sheathing tube.
At present, the electric power pipeline has various defects, such as inconvenient installation and disassembly, poor anti-blocking performance, short service life and poor pressure resistance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prevent electric power pipeline of jam to the installation that proposes in solving above-mentioned background art is dismantled inconveniently, prevents that the jam ability is poor, and life is short, the poor scheduling problem of compressive property.
In order to achieve the above object, the utility model provides a following technical scheme: an anti-blocking power pipeline comprises a power pipeline main body, wherein a power pipeline inner pipe is installed on the inner side of the power pipeline main body, a corrugated pipe is installed on the outer side of the power pipeline main body, an anti-blocking plug is installed at one end of the power pipeline inner pipe, a first screw head is installed at one end of the anti-blocking plug, a raised head is installed at the other end of the anti-blocking plug, handles are installed on two sides of one end of the raised head, a cable outlet is formed in the raised head, a spring is installed on the inner side of the cable outlet, a floating chuck is installed at one end of the spring, a plug is installed on the outer side of the cable outlet, a hanging ring is installed at one end of the plug, a second turning elbow is installed at the other end of the power pipeline inner pipe, a first turning elbow is installed above the second turning elbow, and telescopic inner chambers are arranged, the utility model discloses a flexible power supply, including flexible inner chamber, first diversion return bend, second diversion return bend, butt joint board, fixed side ear is all installed to the both sides of second diversion return bend and first diversion return bend, the fixed slide bar of installing on the fixed side ear, the power pipeline main part sets up to modified polypropylene layer, the power pipeline inner tube sets up to the PE layer.
Preferably, the corrugated pipe and the power pipeline main body are arranged into an integral structure, and a port of the power pipeline main body is connected with the inner pipe of the power pipeline in a welding mode.
Preferably, the inner cavity of the inner pipe of the power pipeline is provided with a thread layer, and the first thread head is fixedly connected with the inner pipe of the power pipeline through threads.
Preferably, the first screw head and the second screw head are both of a hollow structure, the inner cavity of the first screw head is communicated with the cable outlet, and the inner cavity of the second screw head is communicated with the inner cavity of the second turning elbow and the inner cavity of the first turning elbow.
Preferably, the butt joint plate is provided with a sliding hole, and the sliding rod is connected with the sliding hole on the butt joint plate in a sliding manner.
preferably, the telescopic pipe is connected with the telescopic inner cavities in the second turning elbow pipe and the first turning elbow pipe in a sliding manner, and the telescopic pipe, the second turning elbow pipe and the first turning elbow pipe are made of the same material.
preferably, the cable outlet is connected with the plug in an embedded mode, and a gap is reserved between the cable outlet and the floating chuck.
Preferably, the four sliding rods are arranged on the two sides of the second direction-changing bent pipe and the first direction-changing bent pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
1. The utility model discloses an electric power pipeline is formed by the combination of electric power pipeline main part and electric power pipeline inner tube, and install the bellows in the outside of electric power pipeline main part, install the electric power pipeline inner tube at the inboard both ends of electric power pipeline main part, and the electric power pipeline main part is made through modified polypropylene layer, it has good electrical insulation through modified polypropylene layer, modified polypropylene layer has higher thermal deformation temperature and low temperature impact property, modified polypropylene layer tensile, compressive property is higher than HDPE, M modified polypropylene layer matter is light, smooth, friction owner power is little, but the butt joint of hot melt welding, modified polypropylene layer long-term service temperature one 5 ~ 70 ℃, and be provided with the bellows in the electric power pipeline main part, can carry out pressure compensation through the bellows, increase its compressive property, thereby improve its life;
2. the utility model discloses an inboard of power pipeline inner tube is provided with the screw thread layer, is provided with the anti-clogging end cap with the supporting power pipeline inner tube, can seal power pipeline through it, can avoid dirt to get into the pipeline, has stronger anti-clogging effect, installs the plush copper in the one end of anti-clogging end cap, is provided with the cable export in the inboard of plush copper, installs the floating splint by spring control in the inside of cable export, through its convenient clamping to the cable of different thicknesses;
3. the utility model discloses an electric power pipeline inner tube's the other end adds and is equipped with second diversion return bend and first diversion return bend, and installs flexible pipe between second diversion return bend and first diversion return bend, can adjust the length between second diversion return bend and the first diversion return bend, and conveniently carry out the diversion through second diversion return bend and first diversion return bend and pull, facilitate the use, increase electric power pipeline's commonality.
Drawings
Fig. 1 is a schematic structural view of an anti-clogging electric power pipeline of the present invention;
Fig. 2 is a side view of the anti-clogging plug of the present invention;
Fig. 3 is a schematic structural view of the anti-clogging plug of the present invention;
FIG. 4 is a partial structure view of the power pipeline of the present invention;
Fig. 5 is a schematic structural view of the direction-changing elbow pipe of the present invention.
In the figure: 1. a bellows; 2. an electric power pipeline inner pipe; 3. an anti-blocking plug; 4. a raised head; 5. a first screw head; 6. a power conduit body; 7. a second screw head; 8. a first direction-changing bent pipe; 9. a slide bar; 10. a butt plate; 11. a telescopic pipe; 12. a second direction-changing bent pipe; 13. fixing the side ear; 14. a handle; 15. a floating chuck; 16. a spring; 17. a cable outlet; 18. a telescopic inner cavity; 19. hanging a ring; 20. a plug; 21. a modified polypropylene layer; 22. and (6) a PE layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-5, the present invention provides an embodiment: an anti-blocking electric power pipeline comprises an electric power pipeline main body 6, an electric power pipeline inner pipe 2 is installed on the inner side of the electric power pipeline main body 6, inner threads are arranged on the inner side of the electric power pipeline inner pipe 2, an anti-blocking plug 3 is convenient to achieve, a first turning bent pipe 8 and a second turning bent pipe 12 are fixedly connected with the electric power pipeline inner pipe 2 at two end ports of the electric power pipeline main body 6 through a first screw head 5 and a second screw head 7, a corrugated pipe 1 is installed on the outer side of the electric power pipeline main body 6, the corrugated pipe 1 is mainly used for compensating pipeline thermal deformation, damping, absorbing pipeline settlement deformation and the like, is widely applied to industries such as petrifaction, instruments, spaceflight, chemical industry, electric power, cement, metallurgy and the like, and other corrugated pipes such as plastics and the like have irreplaceable effects in the fields of medium conveying, electric power threading, the anti-blocking plug 3 is used for sealing ports at two ends of a power pipeline main body 6, so that dirt can be prevented from entering an inner cavity of a pipeline body, and anti-blocking protection can be performed on the anti-blocking plug 3, a first screw head 5 is installed at one end of the anti-blocking plug 3, a raised head 4 is installed at the other end of the anti-blocking plug 3, the raised head 4 facilitates cable arrangement, handles 14 are installed on two sides of one end of the raised head 4, the handles 14 facilitate manual control of installation and disassembly of the anti-blocking plug 3, a cable outlet 17 is formed in the raised head 4, the cable outlet 17 facilitates cable arrangement, a spring 16 is installed on the inner side of the cable outlet 17, the spring 16 can control floating of the floating chuck 15, the floating chuck 15 can adjust the caliber size of the cable outlet 17, cables with different sizes can be clamped, the joint of the cable outlet 17 and the cables can, a floating chuck 15 is arranged at one end of a spring 16, a plug 20 is arranged at the outer side of the cable outlet 17, the plug 20 is used for sealing the cable outlet 17, when the pipeline is standby, dirt blockage can be avoided, a hanging ring 19 is arranged at one end of the plug 20, the hanging ring 19 facilitates the disassembly of the plug 20, a second direction-changing bent pipe 12 is arranged at the other end of the power pipeline inner pipe 2, the second direction-changing bent pipe 12 and a first direction-changing bent pipe 8 are used for performing direction-changing wire arrangement on the cable, the cable is convenient to convey, the universality is increased, the first direction-changing bent pipe 8 is arranged above the second direction-changing bent pipe 12, telescopic inner cavities 18 are arranged in the second direction-changing bent pipe 12 and the first direction-changing bent pipe 8, the telescopic inner cavities 18 are used for installing telescopic pipes 11, the telescopic control of the telescopic pipes 11 in the telescopic inner cavities 18 is convenient, the distance between the second direction-changing bent pipe 12, an extension pipe 11 is arranged in an extension inner cavity 18, a second screw head 7 is arranged at one end of each of a second direction-changing bent pipe 12 and a first direction-changing bent pipe 8, a butt plate 10 is arranged at the other end of each of the second direction-changing bent pipe 12 and the first direction-changing bent pipe 8, a sliding hole is formed in the butt plate 10 and can conveniently penetrate through a sliding rod 9, when the extension pipe 11 extends and retracts, the extension stability can be improved through the sliding rod 9, fixed side lugs 13 are arranged on two sides of each of the second direction-changing bent pipe 12 and the first direction-changing bent pipe 8, the fixed side lugs 13 facilitate installation of the sliding rods 9, the sliding rods 9 are arranged on the fixed side lugs 13, a power pipeline main body 6 is arranged to be a modified polypropylene layer 21, the modified polypropylene layer 21 is made by modifying a formula with polypropylene as a base material and is called a modified polypropylene (MPP) pipe, the cost is higher, and the PE pipe, however, since the appearance is not easy to distinguish whether the pipe component is modified polypropylene (MPP) or High Density Polyethylene (HDPE), some manufacturers will upgrade the MPP with HDPE under the driving of benefits, and even more, the MPP pipe is manufactured from HDPE recycled materials or waste materials, and some original normal manufacturers will give up the production of MPP pipe or step into a fake line due to the influence of cost and price, so that the poor condition leaves serious potential safety hazard for the cable laying of the power engineering, because the power cable runs at about 70 ℃ for a long time, the strength of the PE pipe is greatly reduced (the strength is reduced 2/3 at 70 ℃) when the temperature is above 40 ℃ (the strength is reduced at 70 ℃), the power cable is softened and deformed due to the influence of external force, the maintenance of the cable at the later stage is greatly influenced, the inner pipe 2 of the power pipeline is set as the PE layer 22, the PE layer 22 is polyethylene plastic, the most basic plastic, the plastic bag, the preservative film and the like are PE plastic bags, HDPE is a thermoplastic resin with high crystallinity and non-polarity, the appearance of original HDPE is milk white, the HDPE is semitransparent in a certain degree in a micro-thin section, PE has excellent characteristic of resisting most domestic and industrial chemicals, the power cable calandria runs at about 70 ℃ for a long time and needs to bear the external pressure of underground muddy water, PE solid wall pipes or PE spiral pipes (hereinafter collectively referred to as PE pipes) are mostly used as trenchless cable sleeves in the early stage, but the strength of the PE pipes is greatly reduced (the strength is reduced by 2/3 at 70 ℃) when the temperature is more than 40 ℃, in the early stage of finished directional drilling and laying of the PE calandria, the PE pipes are deformed by the external force, the normal laying of the cable in the later stage is influenced, so the PE pipes are proved to be not used for the power calandria, the PE pipes comprise medium-density polyethylene pipes and high-density polyethylene pipes, and are divided into 11 and SDR17.6 series according to the wall thickness, and the former is suitable for conveying gaseous, Compared with steel pipes, the natural gas and the liquefied petroleum gas are mainly used for conveying natural gas, have simple construction process and certain flexibility, are not mainly used for corrosion prevention treatment, save a large number of working procedures, have the defects that the mechanical property is inferior to that of the steel pipes, particularly pay attention to the safety interval of thermal heating in construction, cannot be exposed in the air and sunlight, are sensitive to chemical substances, and prevent the damage caused by the leakage of a sewage pipeline.
furthermore, the corrugated pipe 1 and the electric power pipeline main body 6 are arranged into an integral structure, the port of the electric power pipeline main body 6 is connected with the electric power pipeline inner pipe 2 in a welding mode, the corrugated pipe 1 is mainly applied to the effects of compensating for thermal deformation of a pipeline, damping, absorbing sedimentation deformation of the pipeline and the like, the corrugated pipe is widely applied to industries such as petrifaction, instruments, aerospace, chemical engineering, electric power, cement, metallurgy and the like, and corrugated pipes made of other materials such as plastics have irreplaceable effects in the fields of medium conveying, electric power threading, machine tools, household appliances.
Further, the inner cavity of the inner pipe 2 of the power pipeline is provided with a thread layer, the first screw head 5 is fixedly connected with the inner pipe 2 of the power pipeline through threads, and the thread layer on the inner side of the inner pipe 2 of the power pipeline facilitates installation of the first screw head 5 and the inner pipe 2 of the pipeline.
Furthermore, first spiral shell head 5 and second spiral shell head 7 all set up to hollow structure, and the inner chamber of first spiral shell head 5 link up with cable outlet 17, and the inner chamber of second spiral shell head 7 link up with second diversion return bend 12 and first diversion return bend 8 inner chamber, make things convenient for the winding displacement of cable through this kind of design.
Furthermore, a sliding hole is formed in the butt joint plate 10, the sliding rod 9 is connected with the sliding hole in the butt joint plate 10 in a sliding mode, and the butt joint plate 10 can conveniently slide on the sliding rod 9 in a lifting mode through the sliding hole.
Further, the extension tube 11 is slidably connected with the second direction-changing bent tube 12 and the extension inner cavity 18 in the first direction-changing bent tube 8, the extension tube 11, the second direction-changing bent tube 12 and the first direction-changing bent tube 8 are made of the same material, and the distance between the second direction-changing bent tube 12 and the first direction-changing bent tube 8 can be conveniently adjusted through the extension tube 11.
Further, the cable outlet 17 is connected with the plug 20 in an embedded manner, and a gap is left between the cable outlet 17 and the floating chuck 15, and the cable outlet 17 is sealed by the plug 20.
Furthermore, four sliding rods 9 are arranged, the four sliding rods 9 are arranged on two sides between the second direction-changing bent pipe 12 and the first direction-changing bent pipe 8, and the lifting stability of the second direction-changing bent pipe 12 and the first direction-changing bent pipe 8 can be conveniently controlled through the four sliding rods 9.
The working principle is as follows: when the device is used, the anti-blocking plug 3 is installed at one end of the power pipeline inner pipe 2 through the first screw head 5, when the pipeline is standby, the plug 20 is sealed at the cable outlet 17, when the cable needs to be passed, the plug 20 is detached, the power pipeline inner pipe 2 is used for conveying the cable, the cable is worn out through the cable outlet 17, the cable is clamped by the floating chuck 15, dust can be prevented from entering the pipeline, when the cable needs to be subjected to diversion conveying, one end of the second diversion elbow 12 is fixedly connected with one end of the power pipeline inner pipe 2 through the second screw head 7, the telescopic pipe 11 is controlled to slide and stretch in the telescopic inner cavities 18 in the first diversion elbow 8 and the second diversion elbow 12 as required, meanwhile, the butt joint plate 10 slides along the slide rod 9, and therefore the overall height of the diversion elbow is adjusted.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. An anti-clogging electric power pipeline, comprising an electric power pipeline main body (6), characterized in that: the power pipeline comprises a power pipeline main body (6), wherein a power pipeline inner pipe (2) is installed on the inner side of the power pipeline main body (6), a corrugated pipe (1) is installed on the outer side of the power pipeline main body (6), a blocking-preventing plug (3) is installed at one end of the power pipeline inner pipe (2), a first screw head (5) is installed at one end of the blocking-preventing plug (3), a raised head (4) is installed at the other end of the blocking-preventing plug (3), handles (14) are installed on two sides of one end of the raised head (4), a cable outlet (17) is arranged inside the raised head (4), a spring (16) is installed on the inner side of the cable outlet (17), a floating chuck (15) is installed at one end of the spring (16), a plug (20) is installed on the outer side of the cable outlet (17), a hanging ring (19) is installed at one end of the plug (20), a first direction-changing bent pipe (8) is arranged above the second direction-changing bent pipe (12), the inner cavities of the second direction-changing bent pipe (12) and the first direction-changing bent pipe (8) are both provided with a telescopic inner cavity (18), a telescopic pipe (11) is arranged in the telescopic inner cavity (18), a second screw head (7) is arranged at one end of the second direction-changing bent pipe (12) and one end of the first direction-changing bent pipe (8), the other ends of the second turning elbow pipe (12) and the first turning elbow pipe (8) are both provided with a butt joint plate (10), fixed side lugs (13) are arranged on both sides of the second direction-changing bent pipe (12) and the first direction-changing bent pipe (8), the fixed side lug (13) is provided with a sliding rod (9), the power pipeline main body (6) is set to be a modified polypropylene layer (21), and the power pipeline inner pipe (2) is set to be a PE layer (22).
2. The anti-clogging electrical conduit according to claim 1, wherein: bellows (1) and electric power pipeline main part (6) set up to an organic whole structure, and the port department and electric power pipeline inner tube (2) welded connection of electric power pipeline main part (6).
3. The anti-clogging electrical conduit according to claim 1, wherein: the inner cavity of the electric power pipeline inner pipe (2) is provided with a thread layer, and the first thread head (5) is fixedly connected with the electric power pipeline inner pipe (2) through threads.
4. The anti-clogging electrical conduit according to claim 1, wherein: first spiral shell head (5) and second spiral shell head (7) all set up to hollow structure, and the inner chamber and cable outlet (17) of first spiral shell head (5) link up, and the inner chamber and second diversion return bend (12) and first diversion return bend (8) inner chamber of second spiral shell head (7) link up.
5. The anti-clogging electrical conduit according to claim 1, wherein: the butt joint plate (10) is provided with a sliding hole, and the sliding rod (9) is connected with the sliding hole in the butt joint plate (10) in a sliding mode.
6. The anti-clogging electrical conduit according to claim 1, wherein: the telescopic pipe (11) is connected with the second turning bent pipe (12) and a telescopic inner cavity (18) in the first turning bent pipe (8) in a sliding manner, and the telescopic pipe (11), the second turning bent pipe (12) and the first turning bent pipe (8) are made of the same material.
7. The anti-clogging electrical conduit according to claim 1, wherein: the cable outlet (17) is connected with the plug (20) in an embedded mode, and a gap is reserved between the cable outlet (17) and the floating chuck (15).
8. The anti-clogging electrical conduit according to claim 1, wherein: the four sliding rods (9) are arranged on the two sides of the second direction-changing bent pipe (12) and the first direction-changing bent pipe (8).
CN201920812727.8U 2019-05-31 2019-05-31 Anti-blocking power pipeline Expired - Fee Related CN209786759U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920812727.8U CN209786759U (en) 2019-05-31 2019-05-31 Anti-blocking power pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920812727.8U CN209786759U (en) 2019-05-31 2019-05-31 Anti-blocking power pipeline

Publications (1)

Publication Number Publication Date
CN209786759U true CN209786759U (en) 2019-12-13

Family

ID=68788420

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920812727.8U Expired - Fee Related CN209786759U (en) 2019-05-31 2019-05-31 Anti-blocking power pipeline

Country Status (1)

Country Link
CN (1) CN209786759U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113178779A (en) * 2021-04-12 2021-07-27 国网河北省电力有限公司沧州供电分公司 Offshore oilfield shore power connection device based on shore-based power supply

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113178779A (en) * 2021-04-12 2021-07-27 国网河北省电力有限公司沧州供电分公司 Offshore oilfield shore power connection device based on shore-based power supply
CN113178779B (en) * 2021-04-12 2022-11-22 国网河北省电力有限公司沧州供电分公司 Offshore oilfield shore power connection device based on shore-based power supply

Similar Documents

Publication Publication Date Title
CN209786759U (en) Anti-blocking power pipeline
CN204083536U (en) A kind of large-diameter steel-plastic composite pipe
CN205207932U (en) Inner groove electrothermal welding socket joint formula steel band bellows of heavy -calibre
CN2874191Y (en) Anti-corrosion heat insulation pipe heated by non-metal electric heating fiber
CN208816890U (en) A kind of oxidation resistant polythene PE water-feeding pipes
CN103401191B (en) A kind of sand inclusion steel-plastic composite cable duct
CN207112198U (en) A kind of steel strip reinforced PE helical bellowses for being easy to connection
CN213299207U (en) Water purification PE pipeline convenient to connect
CN212080489U (en) Multilayer anti-burst PE pipe
CN202418942U (en) Steel-plastic composite pipe
CN205078934U (en) Interior ladder way electrothermal welding socket joint formula steel band bellows of heavy -calibre
CN204962095U (en) Casing pipe for pipe connection
CN210577698U (en) Novel MPP power cable protection pipe sleeve
CN207848634U (en) A kind of bamboo winding composite pressure pipe with groove and tognue type interface of unstressed defect
CN205173750U (en) Stainless steel covers moulds hose
CN208107447U (en) A kind of three-layer structure is broken hot single layer tubing
CN206432640U (en) A kind of HGCO hollow cables protection pipe
CN211259888U (en) Corrosion-resistant pipe
CN214579385U (en) Special pipe jacking pipe material for welding-free sewage discharge steel pipe
CN206076864U (en) A kind of full lubrication high density polythene silicone core pipe
CN211475103U (en) Grey frock pipe of newness PPR that toughness is strong
CN102644823A (en) Novel connection mode for steel mesh skeleton plastic compound pipelines
CN212776007U (en) PE pipe for water supply
CN204755299U (en) Novel water pump connecting pipe
CN108150734A (en) A kind of bamboo with groove and tognue type interface winding composite pressure pipe of unstressed defect

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20191213

Termination date: 20200531

CF01 Termination of patent right due to non-payment of annual fee