CN205001739U - Inner wall is connected to heavy -calibre plastic tubing hot melt does not have flanging device - Google Patents
Inner wall is connected to heavy -calibre plastic tubing hot melt does not have flanging device Download PDFInfo
- Publication number
- CN205001739U CN205001739U CN201520628620.XU CN201520628620U CN205001739U CN 205001739 U CN205001739 U CN 205001739U CN 201520628620 U CN201520628620 U CN 201520628620U CN 205001739 U CN205001739 U CN 205001739U
- Authority
- CN
- China
- Prior art keywords
- heavy
- melt adhesive
- hemmer
- adhesive paste
- electric heating
- 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
Links
Abstract
The utility model discloses an inner wall is connected to heavy -calibre plastic tubing hot melt does not have flanging device, no flanging device includes the body, the body has first end and second end, and the inner wall of the first end of body has the holding tank, the inner wall of body second end has the holding tank, still include electric heating element, electric heating element installs first end and/or second end. The utility model discloses there is not the turn -ups in the pipe inner wall that the plastic bonding of electrothermal welding formula formed, has avoided the reduction that the sectional area was made an appointment with in the pipeline, smoothness nature when having increased the pipe -line transportation material. In addition, because pipe inner wall does not have the turn -ups problem, the difficult degree of the inside desilting of pipeline has been avoided.
Description
Technical field
The utility model belongs to plastic pipe industry and technical field of pipeline connection, particularly relates to a kind of heavy-caliber plastic pipe hot-melt adhesive paste inwall without hemmer.
Background technique
During heavy-caliber plastic pipe heat-melting butt-joint, in order to make joint connect closely, there is a certain amount of hot melt clout, causing the flange problem of inwall, outer wall.During the complete water supply system of conduits fused, the flange material of inwall can reduce through-flow sectional area and be about 3-5%, adds the water resistance of system.As for drainage and exhaust system, the flange of inwall is just as having built dash threshold in pipeline.
Because draining blow-off line all will have sanitationman to remove desilting mud every year, and the instrument clearing up mud is one piece of round iron plate more smaller than drain pipe caliber, porose every 120 ° on the garden week of iron plate, respectively with little wire line hitch on coarse-wire rope, when desilting mud iron plate and pipeline at a right angle, in pipeline, scrape silt.But, have flange due to during conduits fused, when iron plate goes to flange, just there is the possibility that iron plate is stuck, increase the difficulty passed through.
In addition, the current heavy caliber of China, super large caliber draining, blowdown connect with structured wall popes, mostly with shrink belt or Electric thermal smelting belt.Connect only to bring with the thermal shrinkage of a few millimeters thick more than the pipeline of a rice diameter and connect, joint is easily damaged, causes leakage accident.Because ground is motion, necessarily have sedimentation to produce, when surface subsidence, shrink belt joint easily loses its function.The frequent occurrence of large-area in many cities is caved in, and chasing after its reason is all that large diameter pipeline seepage causes.Electric melting connection plastic tube technology is in the past all belong to " parallel or socket joint electric heating melting ".Parallel or socket joint refers to that electric heating wire wiring direction is parallel with the outer wall of tubing plug.It is proper that parallel type socket joint electric heating melting is used for minor-caliber plastic pipe (being generally used for DN20-DN315), because caliber is little, the shrinkage of plastics is also little, so error is less.And heavy caliber, super large caliber plastic tube, because caliber is large, the shrinkage of plastics is also large, so there is error also want large thereupon.As the plastic sewer pipe of 2.6 rice diameters, the plastic sewer pipe of winter production, when installing to summer, the bore of plastic sewer pipe will become large 3-4 centimetre.As adopted parallel or socket joint electric heating melting, two face of weld of plastic sewer pipe just cannot reliably welding.Because gap is too large, former electric heating melting mode cannot realize.
Summary of the invention
The purpose of this utility model is to provide a kind of heavy-caliber plastic pipe hot-melt adhesive paste inwall without hemmer, and during to solve heavy-caliber plastic pipe heat-melting butt-joint, plastic pipe inner wall, outer wall exist the problem of flange.
The technological scheme that the utility model solves the problems of the technologies described above is as follows: a kind of heavy-caliber plastic pipe hot-melt adhesive paste inwall, without hemmer, describedly comprises body without hemmer, and described body has the first termination and the second termination and it is characterized in that:
The inwall of body first termination has receiving groove;
The inwall of body second termination has receiving groove;
Also comprise electric heating part, described electric heating part is arranged on described first termination and/or the second termination.
The utility model heavy-caliber plastic pipe hot-melt adhesive paste as above inwall is without hemmer, and further, described first termination is female end, and described second termination is plug end end; Described female end is funnel form, and described plug end is tapered; The slope of the conical surface of plug end is consistent with the slope on the funnel inclined-plane of female end.
The utility model heavy-caliber plastic pipe hot-melt adhesive paste as above inwall is without hemmer, and further, female end and plug end are polythene material.
The utility model heavy-caliber plastic pipe hot-melt adhesive paste as above inwall is without hemmer, and further, described electric heating part comprises electric heating wire, wire and wiring terminal, and described electric heating wire is coated with polythene material; Electric heating wire is arranged on described female end and/or described plug end; Described wire connects described electric heating wire and wiring terminal.
The utility model heavy-caliber plastic pipe hot-melt adhesive paste as above inwall is without hemmer, and further, also comprise plastic protective ring, described plastic protective ring is enclosed within described wiring terminal.
The utility model heavy-caliber plastic pipe hot-melt adhesive paste as above inwall, without hemmer, further, also comprises fusion temp detection device, temperature during for detecting and recording electric heating part welding.
The utility model heavy-caliber plastic pipe hot-melt adhesive paste as above inwall is without hemmer, and further, the diameter of plastic tube is greater than 600mm.
The utility model heavy-caliber plastic pipe hot-melt adhesive paste as above inwall is without hemmer, further, described body moulds reinforcement bellows for two, cavity is had in the ripple of body, the plastics stiffening rib of strip of sheet is had in cavity, described plastics stiffening rib perpendicular to tube wall, with the crest anchor ring hot-melt adhesive paste of cavity outside it, the another side hoop hot-melt adhesive paste of inner edge and cavity.
The utility model heavy-caliber plastic pipe hot-melt adhesive paste as above inwall is without hemmer, and further, the material of described tube wall is PE polyethylene, and the material of described plastics stiffening rib is PP polypropylene.
The utility model heavy-caliber plastic pipe hot-melt adhesive paste as above inwall is without hemmer, and further, the transverse section of described plastics stiffening rib is for being I shape, and plastics stiffening rib upper/lower terminal all has one groove to be respectively fixed groove and lower fixed groove.
The beneficial effects of the utility model are:
There is not flange in the inner-walls of duct 1, utilizing socket joint electric heating melting formula plastics to be formed by connecting, avoids sectional area minimizing about in pipeline, add fluency during Cemented filling material.In addition, because inner-walls of duct is without flange problem, the degree of difficulty of pipe interior desilting is avoided.
2, the utility model plug end and female end are inclined design, fundamentally solve heavy caliber, the dimensional changes of bore that ultra-large caliber pipe material produces due to the shrinkage character of the temperature difference and plastics itself, change parallel type socket joint plastic tube because cause after caliber size change cannot the defect (when 2-3 centimetre gap) of socket hot-melting.Plug end only need inject toward female end direction and melting face can be made to be close to by the utility model plastic tube.In addition utilize " conical centre location " principle, when the tapered slope of plug end is consistent with the slope of female end, the effect to plug end location can be played, guarantee that welding can not bias, raising joint quality.
3, the limited face of weld when insertion depth of parallel type electric heating melting only has hot melt, and taper face of weld of the present invention, for DN1000 pipe, structure crest is 80mm, and insertion depth is 50mm, because plug end changes into as taper by parallel, the oblique line of taper has just become 100mm long, effective face of weld is expanded two times, substantially increases the intensity of welding, obviously improve the quality of engineering.
4, plug end is a taper, function that plug end also has " full circle ".Because super large caliber plastic tube is easy to when stacking after producing lose circle, when will connect on-site, if parallel type socket joint just very difficult positive round again.Be arranged in the embodiment of female end at the utility model heating element: the first electrified regulation of female end, make female end heat distortion, then plug end inserts female end, at this moment " full circle " function of the taper of plug end has just fully demonstrated out, and the power at this moment inserted determines the size of circle trimming function.There is digging machine in building site, and the grab bucket female end of general tubing serving as a contrast a flitch digging machine, firmly in flitch, makes tubing firmly complete to insertion female end direction.Can guarantee that limit heating edge is inserted, until the fusion that fits like a glove.
5, fusion temp detection device detect and welding time melt temperature, melt temperature is the foundation determining welding quality, the collection of these data is completed by thermocouple, this thermocouple is inserted into dark the obtained melt temperature numerical value of electric heating surface 3-4mm, this Temperature numerical is recorded in computer, treat that electric heating melting terminates, examination related data needed for engineering just prints by computer, preserve as construction note, also will become and effectively check and accept information filing, accomplished to review, the present invention that withdrawn deposit is to lifting construction quality.
Accompanying drawing explanation
By detailed description done in conjunction with the following drawings, above-mentioned and/or other aspects of the present utility model and advantage will become clearer and be easier to understand, and these accompanying drawings just schematically, do not limit the utility model, wherein:
Fig. 1 is that the heavy-caliber plastic pipe hot-melt adhesive paste inwall of a kind of embodiment of the utility model is without hemmer schematic diagram;
Fig. 2 is the joint schematic diagram of two plastic tubes of a kind of embodiment of the utility model;
Fig. 3 is the plug end schematic diagram of a kind of embodiment of the utility model;
Fig. 4 is that the heavy-caliber plastic pipe hot-melt adhesive paste inwall of the another kind of embodiment of the utility model is without hemmer schematic diagram;
Fig. 5 is the electric heating wire schematic diagram coated with polythene material of a kind of embodiment of the utility model.
In accompanying drawing, the list of parts representated by each label is as follows:
1, plug end, 11, plug end chamfering, 2, female end, 21, female end chamfering, 22, ripple, 23, plastics stiffening rib, 24, groove, 3, electric heating part, 31, electric heating wire, 32, wire, 33, wiring terminal, 34, plastic protective ring, 35, ring-type polythene material, 36, polyethylene packed layer, 4, steel band, 5, body, 6, receiving groove.
Embodiment
Hereinafter, the embodiment of heavy-caliber plastic pipe hot-melt adhesive paste inwall of the present utility model without hemmer is described with reference to the accompanying drawings.
The embodiment recorded at this is specific embodiment of the present utility model, for illustration of design of the present utility model, is all explanatory and exemplary, should not be construed as the restriction to the utility model mode of execution and the utility model scope.Except the embodiment recorded at this, those skilled in the art can also adopt other technological scheme apparent based on the content disclosed in the application's claims and specification, and these technological schemes comprise the technological scheme making any apparent substitutions and modifications adopted the embodiment recorded at this.
The accompanying drawing of this specification is schematic diagram, and aid illustration design of the present utility model schematically shows shape and the correlation thereof of each several part.Note that the structure of each parts for the ease of clearly showing the utility model embodiment, not according to identical scale between each accompanying drawing.Identical reference mark is for representing identical part.
Fig. 1 illustrates that the heavy-caliber plastic pipe hot-melt adhesive paste inwall of a kind of embodiment of the utility model is without hemmer, and Fig. 2 is the joint schematic diagram of two plastic tubes.As shown in Figure 1, describedly comprise body 5, female end 2 and plug end 1 without hemmer, described female end is arranged on one end of body, and described plug end is arranged on the other end of body;
Described female end 2 is funnel form, and as shown in Figure 3, described plug end 1 is tapered;
The slope of the conical surface of plug end is consistent with the slope on the funnel inclined-plane of female end;
Electric heating part 3, described electric heating part is arranged on described female end and/or described plug end;
Female end inwall is provided with female end chamfering 21(and receiving groove); Plug end inwall is provided with plug end chamfering 11(and receiving groove), as shown in Figure 3.Chamfering angle size is determined according to pipe diameter size and wall thickness.The object arranging described chamfering stores flange material when hot-melt adhesive paste, makes the inwall of two plastic tubes after hot-melt adhesive paste there is not flange.
When the heavy-caliber plastic pipe hot-melt adhesive paste inwall of two basic model utility above-described embodiments carries out hot-melt adhesive paste without hemmer, first the flexible strip that 1.2mm ~ 1.5mm is thick is prepared, width of steel band 5 ~ 6cm, steel band length is plastic tube internal diameter * 3.14+500mm, coats " Teflon " (non cohesive gel) in the one side of steel band.Female end and the plug end docking of two plastic tubes of hot-melt adhesive paste will be treated, and (steel band length grows 500mm than plastic pipe inner wall girth steel band to be placed on seam crossing, steel band two ends are overlapped, joining seam is put three to four pieces of fixed heads of strong magnet, make steel band just form a pushing out ring.), the groove that steel band covering joints place is made up of chamfering." Teflon " of steel band faces seam, and utilize steel band to stop the flange material of hot melt during welding, when thermal fusion welding, clout is just stored in the gap of chamfering, treats that welding is complete and cools down, and is removed by the magnetic cylinder steel band of steel band.There is not flange in the inner-walls of duct that said process is formed by connecting, avoids sectional area minimizing about in pipeline, add fluency during Cemented filling material.In addition, because inner-walls of duct is without flange problem, the degree of difficulty of pipe interior desilting is avoided.
At the heavy-caliber plastic pipe hot-melt adhesive paste inwall of the utility model above-described embodiment without in hemmer, as shown in Figure 2, described electric heating part 3 comprises electric heating wire 31, wire 32 and wiring terminal 33, and described electric heating wire is coated with polythene material; Electric heating wire is arranged on described female end and/or described plug end; Described wire connects described electric heating wire and wiring terminal.
As shown in Figure 5, be the electric heating wire 31 of an embodiment of the present invention, this electric heating wire 31 outer cladding one deck ring-type polythene material 35, be polyethylene packed layer 36 in ring-type polythene material outside, the exterior contour of polyethylene packed layer is rectangle.The spacing when width of rectangle equals electric heating wire coiling between adjacent electric heating wire.
When above-mentioned electrically-heated-wire is arranged on plug end or female end, while winding electrically-heated-wire, utilize electrically-heated-wire to heat polyethylene, adjacent polyethylene is fused (temperature of fusion splicing is advisable 155-175 DEG C of scope) mutually, the demand of female end wiring can be met.Ensure that the equal of the span between electric heating wire simultaneously, and can not short circuit between electric heating wire when guaranteeing wiring heating electric heating wire.Adopt said method, the wiring of electric heating wire can be realized on more complicated physical dimension face, started the new paragon of wiring (cloth electric heating wire).
At the heavy caliber socket joint heavy-caliber plastic pipe hot-melt adhesive paste inwall of the utility model above-described embodiment without in hemmer, also comprise plastic protective ring 34, described plastic protective ring 34 is enclosed within described wiring terminal 33, and plastic protective ring 34 prevents wiring terminal from damaging in transport or work progress.
At the heavy-caliber plastic pipe hot-melt adhesive paste inwall of the utility model above-described embodiment without in hemmer, the diameter of plastic tube is greater than 30mm.
At the heavy-caliber plastic pipe hot-melt adhesive paste inwall of the utility model above-described embodiment without in hemmer, described body moulds reinforcement bellows for two, cavity is had in the ripple 22 of body 5, the plastics stiffening rib 23 of strip of sheet is had in cavity, described plastics stiffening rib 23 is perpendicular to tube wall, with the crest anchor ring hot-melt adhesive paste of cavity outside it, the another side hoop hot-melt adhesive paste of inner edge and cavity.
At the heavy-caliber plastic pipe hot-melt adhesive paste inwall of the utility model above-described embodiment without in hemmer, the material of described tube wall is PE polyethylene, and the material of described plastics stiffening rib is PP polypropylene.At the heavy-caliber plastic pipe hot-melt adhesive paste inwall of the utility model above-described embodiment without in hemmer, female end and plug end are polythene material.Two object of more preferably selecting of moulding utilizes PE, PP material behavior separately to perform to the best, selects HDPE(high density polyethylene (HDPE)) be wound around use material as ripple, because PE is convenient to be wound around compound, birdsmouth, plug also select PE to be main material, are convenient to welding.Be added in " work " word stiffening rib in the middle of ripple, what select is PP(polypropylene) because the modular ratio PE of PP much higher (about 2 times), better ring stiffness can be obtained; Because the ring stiffness of heavy caliber draining drain pipe is a main quality index.Above-mentioned two kinds of plastics all belong to TPO, all have corrosion resistant advantage, because the design of this tubing is mainly used in drain pipe, and must be corrosion-resistant.PP, PE can play its respective advantage.
At the heavy-caliber plastic pipe hot-melt adhesive paste inwall of the utility model above-described embodiment without in hemmer, the transverse section of described plastics stiffening rib 23 is for being I shape, and plastics stiffening rib upper/lower terminal all has one groove 24 to be respectively fixed groove and lower fixed groove.
At the heavy-caliber plastic pipe hot-melt adhesive paste inwall of the utility model above-described embodiment without in hemmer, also comprise fusion temp detection device, temperature during for detecting and recording electric heating part welding.
Fig. 4 illustrates that the heavy-caliber plastic pipe hot-melt adhesive paste inwall of the another kind of embodiment of the utility model is without hemmer, describedly comprises body 5 without hemmer, and described body has the first termination and the second termination, and the inwall of body first termination has receiving groove 6; The inwall of body second termination has receiving groove; Also comprise electric heating part, described electric heating part is arranged on described first termination and/or the second termination.In the embodiment shown in fig. 4, this plastic tube is docking hot melten type.During use, alignd the termination of to be connected two plastic tubes, corresponding receiving groove is stitched together mutually, then according to the Connecting format of the plastic tube of the first embodiment, utilizes the welding that steel band carries out without flange.
The heavy-caliber plastic pipe hot-melt adhesive paste inwall of the utility model above-described embodiment has the following advantages without hemmer:
There is not flange in the inner-walls of duct that 1, electric heating melting formula plastics are formed by connecting, avoids sectional area minimizing about in pipeline, add fluency during Cemented filling material.In addition, because inner-walls of duct is without flange problem, the degree of difficulty of pipe interior desilting is avoided.
2, the utility model plug end and female end are inclined design, fundamentally solve heavy caliber, the dimensional changes of bore that ultra-large caliber pipe material produces due to the shrinkage character of the temperature difference and plastics itself, change parallel type socket joint plastic tube because cause after caliber size change cannot the defect (when 2-3 centimetre gap) of socket hot-melting.Plug end only need inject toward female end direction and melting face can be made to be close to by the utility model plastic tube.In addition utilize " conical centre location " principle, when the tapered slope of plug end is consistent with the slope of female end, the effect to plug end location can be played, guarantee that welding can not bias, raising joint quality.
3, the limited face of weld when insertion depth of parallel type electric heating melting only has hot melt, and taper face of weld of the present invention, for DN1000 pipe, structure crest is 80mm, and insertion depth is 50mm, because plug end changes into as taper by parallel, the oblique line of taper has just become 100mm long, effective face of weld is expanded two times, substantially increases the intensity of welding, obviously improve the quality of engineering.
4, plug end is a taper, function that plug end also has " full circle ".Because super large caliber plastic tube is easy to when stacking after producing lose circle, when will connect on-site, if parallel type socket joint just very difficult positive round again.Be arranged in the embodiment of female end at the utility model heating element: the first electrified regulation of female end, make female end heat distortion, then plug end inserts female end, at this moment " full circle " function of the taper of plug end has just fully demonstrated out, and the power at this moment inserted determines the size of circle trimming function.There is digging machine in building site, and the grab bucket female end of general tubing serving as a contrast a flitch digging machine, firmly in flitch, makes tubing firmly complete to insertion female end direction.Can guarantee that limit heating edge is inserted, until the fusion that fits like a glove.
5, fusion temp detection device detect and welding time melt temperature, melt temperature is the foundation determining welding quality, the collection of these data is completed by thermocouple, this thermocouple is inserted into dark the obtained melt temperature numerical value of electric heating surface 3-4mm, this Temperature numerical is recorded in computer, treat that electric heating melting terminates, examination related data needed for engineering just prints by computer, preserve as construction note, also will become and effectively check and accept information filing, accomplished to review, the present invention that withdrawn deposit is to lifting construction quality.
Each technical characteristics of above-mentioned disclosure is not limited to that disclosed with combination that is further feature, other combination that those skilled in the art also can carry out between each technical characteristics according to the object of invention, is as the criterion with the object realizing the utility model.
Claims (10)
1. heavy-caliber plastic pipe hot-melt adhesive paste inwall is without a hemmer, describedly comprises body without hemmer, and described body has the first termination and the second termination, it is characterized in that:
The inwall of body first termination has receiving groove;
The inwall of body second termination has receiving groove;
Also comprise electric heating part, described electric heating part is arranged on described first termination and/or the second termination.
2. heavy-caliber plastic pipe hot-melt adhesive paste inwall according to claim 1 is without hemmer, it is characterized in that:
Described first termination is female end, and described second termination is plug end;
Described female end is funnel form, and described plug end is tapered;
The slope of the conical surface of plug end is consistent with the slope on the funnel inclined-plane of female end.
3. the heavy-caliber plastic pipe hot-melt adhesive paste inwall according to any one of claim 2, without hemmer, is characterized in that, female end and plug end are polythene material.
4. heavy-caliber plastic pipe hot-melt adhesive paste inwall according to claim 2 is without hemmer, and it is characterized in that, described electric heating part comprises electric heating wire, wire and wiring terminal, and described electric heating wire is coated with polythene material; Electric heating wire is arranged on described female end and/or described plug end; Described wire connects described electric heating wire and wiring terminal.
5. heavy-caliber plastic pipe hot-melt adhesive paste inwall according to claim 4 is without hemmer, and it is characterized in that, also comprise plastic protective ring, described plastic protective ring is enclosed within described wiring terminal.
6. the heavy-caliber plastic pipe hot-melt adhesive paste inwall according to any one of claim 1-5, without hemmer, is characterized in that, also comprises fusion temp detection device, temperature during for detecting and recording electric heating part welding.
7. the heavy-caliber plastic pipe hot-melt adhesive paste inwall according to any one of claim 6 is without hemmer, and it is characterized in that, the diameter of plastic tube is greater than 600mm.
8. heavy-caliber plastic pipe hot-melt adhesive paste inwall according to claim 7 is without hemmer, it is characterized in that, described body moulds reinforcement bellows for two, cavity is had in the ripple of body, the plastics stiffening rib of strip of sheet is had in cavity, described plastics stiffening rib perpendicular to tube wall, with the crest anchor ring hot-melt adhesive paste of cavity outside it, the another side hoop hot-melt adhesive paste of inner edge and cavity.
9. heavy-caliber plastic pipe hot-melt adhesive paste inwall according to claim 8 is without hemmer, it is characterized in that, the material of described tube wall is PE polyethylene, and the material of described plastics stiffening rib is PP polypropylene.
10. heavy-caliber plastic pipe hot-melt adhesive paste inwall according to claim 9 is without hemmer, it is characterized in that, the transverse section of described plastics stiffening rib is for being I shape, and plastics stiffening rib upper/lower terminal all has one groove to be respectively fixed groove and lower fixed groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520628620.XU CN205001739U (en) | 2015-08-20 | 2015-08-20 | Inner wall is connected to heavy -calibre plastic tubing hot melt does not have flanging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520628620.XU CN205001739U (en) | 2015-08-20 | 2015-08-20 | Inner wall is connected to heavy -calibre plastic tubing hot melt does not have flanging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205001739U true CN205001739U (en) | 2016-01-27 |
Family
ID=55158626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520628620.XU Expired - Fee Related CN205001739U (en) | 2015-08-20 | 2015-08-20 | Inner wall is connected to heavy -calibre plastic tubing hot melt does not have flanging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205001739U (en) |
-
2015
- 2015-08-20 CN CN201520628620.XU patent/CN205001739U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209943788U (en) | Steel wire mesh framework polyethylene composite pipe connecting structure | |
| CN103883797A (en) | Construction method of steel wire mesh framework plastic composite pipe | |
| CN205001739U (en) | Inner wall is connected to heavy -calibre plastic tubing hot melt does not have flanging device | |
| CN205207932U (en) | Inner groove electrothermal welding socket joint formula steel band bellows of heavy -calibre | |
| CN105135134B (en) | Large-caliber tapered inserted electric heat fusion type plastic pipe | |
| CN211525717U (en) | Socket type corrugated reinforced double-flat-wall composite pipe | |
| CN103292063B (en) | HDPE (high-density polyethylene) inside-outside-reinforced winding reinforced pipe | |
| CN105135135B (en) | Z-shaped large-caliber plastic pipe connected through inserted electric heat fusion | |
| CN105221852A (en) | A kind of composite plastic pipe and manufacture connecting means | |
| CN202091659U (en) | Electrofusion joint apparatus for drainpipe wound with polyethylene plastic steel | |
| CN203531119U (en) | Connecting structure for inspection well base and pipeline | |
| CN208281646U (en) | A kind of outer protective polyethylene layer polyurethane foam heat-insulation pipe road | |
| CN213982455U (en) | Capacitor pipe hoop for PE pipe connection | |
| CN205078305U (en) | Modular tunnel longitudinal drainage pipe | |
| CN103883810B (en) | A kind of steel wire mesh frame plastic composite tube and construction method | |
| CN108386625A (en) | A kind of reinforced type prefabricated direct-buried thermal insulation pipe road | |
| CN201354895Y (en) | Plastics double-wall wounded corrugated pipe | |
| CN211816202U (en) | Novel drilling and pouring energy pile in pipe arrangement form | |
| CN107387921A (en) | A kind of small-sized polyethylene helical bellows welding junction | |
| CN211232016U (en) | Socket-embedded self-fixing steel-plastic composite full-swinging dragging pipe | |
| CN208855089U (en) | A kind of injection molding socket joint flexible connection steel-belt-pipe | |
| CN208634552U (en) | Enhanced hollow spiral tube | |
| CN103774738B (en) | The laying method of refuse landfill HDPE floral tube | |
| CN208381509U (en) | A kind of novel pressure-bearing type composite drainage pipe | |
| CN202001739U (en) | Double-wall twined pipe made from HDPE (high density polyethylene) steel strip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160127 Termination date: 20170820 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |