CN102269298A - Water pipe, strip, method as well as device for manufacturing water pipe - Google Patents
Water pipe, strip, method as well as device for manufacturing water pipe Download PDFInfo
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- CN102269298A CN102269298A CN2011102048919A CN201110204891A CN102269298A CN 102269298 A CN102269298 A CN 102269298A CN 2011102048919 A CN2011102048919 A CN 2011102048919A CN 201110204891 A CN201110204891 A CN 201110204891A CN 102269298 A CN102269298 A CN 102269298A
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Abstract
The invention relates to a water pipe which comprises a compound strengthened outer pipe formed by spiral winding, and the water pipe also comprises a compound strengthened inner lining pipe formed by spiral winding, the outer pipe is of a metal intensive plastic compound ripple tube structure or a tube structure with a metal intensive plastic compound vertical rib, at least two layers of fibre strengthened plastic compound strips are continuously spirally winded and fitted on the inner wall along the inner wall of the outer pipe to form the inner lining pipe, and the inner lining pipe is covered on the spiral winding joint of the outer pipe. The invention also provides a strip, a method and a device for manufacturing the inner lining pipe of the water pipe, and the pipeline can used in water source transmission in large and medium-sized water pipes in city water works.
Description
Technical field:
The present invention relates to a kind of conduit pipe, a kind of specifically have the outer tube of spiral winding and twine the metal reinforced plastic conduit pipe that forms internal lining pipe along the outer tube wall spiral by the compound band of fibrous braid reinforced plastic.The invention still further relates to band, the method and apparatus of making this internal lining pipe.
Background technique
Strengthen the patent ZL200510082911.4 of structured wall popes and the manufacture method that ZL100320114847.X discloses two kinds of steel band reinforced plastic drainpipes at the metal that is used for the waste pipe manufacturing, utilize above-mentioned patent can make diameter greater than 1000mm, ring stiffness 〉=8KN/m
2Heavy caliber, high ring rigidity plastic draining pipeline.Existing plastic draining pipeline mostly is no laminated structure wall pipeline, all has the external load of enough ring stiffness energy bedsoil effects and guarantees the long-term safety use, but only allow to bear less internal pressure, can not be as there being the aqueduct of pressure to use.
The waste pipe of foregoing invention can't be used for the pressure piping field that fluid pressure is carried owing to pressure energy power in bearing is low.
It is pressure piping that the water delivery of pressure plastic pipe is arranged, the pipeline that commonly pure plastic raw material is made.For guaranteeing that its working pressure and ring stiffness must have enough tube wall thicknesses, the raw material consumption that pipeline consumes on its unit length is just many.When the minor diameter pressure piping was pressed in satisfying usually, its ring stiffness (opposing external load ability) satisfied naturally; But major diameter pressure piping, when it satisfied internal pressure strength, the ability of its opposing external pressure was not enough far away, if make the major diameter pressure tube have opposing external and internal pressure ability simultaneously, its wall thickness will increase considerably, thereby makes its manufacture cost be difficult to be accepted by market.Rank was higher, the better plastic materials of performance although developed in recent years, and also having developed is the pressure tube product of the more excellent compound enhancing of saving raw materials for plastics production, performance, and the common pure pipeline of moulding also has only 730 millimeters of specifications and following product.Representational steel skeleton plastic clad pipe (ZL94104509.9) also can only be produced 600 millimeters of diameters and following steel-plastic composite pressure pipe road as the upgrading products of pure plastic pipe.
Summary of the invention
The purpose of this invention is to provide that a kind of consumable material is few, heavy caliber, have enough ring stiffness, the conduit pipe of pressing in can carrying again.
Second purpose of the present invention provides a kind of enhancing composite plastic band of making the internal lining pipe of above-mentioned conduit pipe.
The 3rd purpose of the present invention provides a kind of method of making the internal lining pipe of above-mentioned conduit pipe.
The 4th purpose of the present invention provides a kind of device of making the internal lining pipe of above-mentioned conduit pipe.
For realizing above-mentioned first purpose, conduit pipe provided by the invention comprises that spiral twines compound outer tube of enhancing that forms and the enhancing compound lining pipe that is formed by the winding of fiber reinforced plastic composite strip spiral.
Further, described outer tube is compound bellows structure of metal reinforced plastic or the tubular construction with the compound vertical rib of metal reinforced plastic.
Further, described internal lining pipe is twined and is fitted on the outer tube wall along described outer tube wall continuous helical by the compound band of bilaminar fiber reinforced plastic at least and forms, and the spiral that described internal lining pipe covers described outer tube twines seam.
Further, the width of band is the integral multiple that the outer tube spiral twines width between the seam.
Above-mentioned conduit pipe, its outer tube are mainly used in and guarantee that conduit pipe has enough ring stiffness; Internal lining pipe is mainly used in the carrying and presses; Winding structure can be realized the heavy caliber manufacturing; Under the function that composite structure can be pressed, save material in guaranteeing ring stiffness and carrying; At least two webs can increase axial tensile strength; The width of band is that the integral multiple of width between the outer tube spiral winding seam can guarantee the conduit pipe total length is realized that internal lining pipe covers the spiral winding seam of outer tube.
For realizing above-mentioned second purpose, the band of the internal lining pipe of the above-mentioned conduit pipe of manufacturing provided by the invention comprises plastic strap basic unit and the fiber-reinforced layer compound with band basic unit, and fiber-reinforced layer is wire netting or non metal fiber woven thing.
Further, described fiber-reinforced layer is embedded in plastic strap basic unit inside, or is embedded in the plastic strap substrate surface.Wire netting is a steel wire, and the non metal fiber woven thing comprises a kind of of nylon fiber, carbon fiber, aramid fibre, glass fibre or their combination.
Further, the warp number of fiber-reinforced layer be the parallel number one to twice, its fibre tensile strength is more than 5 times of employed basic unit plastics, its used basic unit's plastics are PE, PP, PVC.
Above-mentioned belt structure is selected at satisfying the conduit pipe function fully, and the strength relationship of particularly relation of warp number and parallel number, and fiber and plastics is particularly important.
For realizing above-mentioned the 3rd purpose, the method for internal lining pipe comprises the steps: that spiral twines the compound enhancing outer tube of formation in the above-mentioned conduit pipe of manufacturing provided by the invention; Cover outer tube seam at least two layers of band of spiral winding continuously along outer tube wall, to or bond on the outer tube wall with the direct first layer band seam of fitting of outer tube wall when spiral twines, the non-coating surface of the first layer of roll extrusion simultaneously band makes the evenly closely seam or bonding of coating surface and outer tube wall; Pipe end place band tack is handled the back form the internal lining pipe that is combined on the outer tube wall.
Further, selection is the integral multiple that the outer tube spiral twines width between the seam along the width of the band of outer tube wall continuous helical winding.
Further, seam comprises flame heating seam, hot blast heating seam, extrudes seam.
Further, when along outer tube wall continuous helical winding multi-layer tapes, the spiral winding direction of each layer band in the same way or oppositely, the winding seam of adjacent each layer band covers mutually in the time of in the same way, seam or bonding being integral between each layer band.
Further, along outer tube wall cover outer tube seam continuously spiral to twine be to move axially realization when outer tube is rotated.
Further, along outer tube wall cover outer tube seam continuously spiral to twine be that band moves axially realization when outer tube is rotated.
For realizing above-mentioned the 4th purpose, the device of the above-mentioned conduit pipe internal lining pipe of manufacturing provided by the invention comprises that spiral twines the device that forms outer tube, also comprises the device that discharges the band that forms described internal lining pipe; Twine the wind of described band along the outer tube wall spiral; Band is added the heating welding device that is thermally welded to outer tube wall; Make the even heating of band closely be welded to press fit device on the outer tube wall; Cutting tack device.
Further, wind comprises the device that drives the outer tube rotation and makes the axially movable device of outer tube.
Further, wind comprises the device that drives the outer tube rotation and makes the axially movable device of band.
Further, the device of drive outer tube rotation is one group of support outer tube and rotatable friction carrying roller; Making the axially movable device of outer tube is a fixed friction carrying roller and along the axially movable carriage of outer tube.
Further, the device of drive outer tube rotation is one group of support outer tube and rotatable friction carrying roller; Making the axially movable device of band is that it is provided with the device of the band that discharge to form described internal lining pipe and one along the axially movable support of outer tube.
Further, the device that discharge to form the band of described internal lining pipe comprises storage tep reel, cantilever support and is arranged on tape guide roller group on the cantilever support.
Further, heating welding device is arranged on fired heater, the storage heater on the cantilever support and extrudes welding machine.
Further, press fit device is arranged on the press-roller device of the adjustable seamless power on the cantilever support.
Conduit pipe of the present invention is by on the Stetch Wrapping Machine of special use, through winding, seam is fitted in known metal ribs reinforced plastic composite pipe (as ZL20050112528.4) with the enhancing composite strip that above-mentioned fibrous braid and plastics are combined into, or on the inwall of the bellows (as ZL100320114847.X) that strengthens of metal, form inner wall smooth, press load in can carrying and satisfy the external rings rigidity requirement, can be as the large-calibre reinforced plastic pressure pipe of aqueduct.
Description of drawings:
Describe the present invention in detail below in conjunction with accompanying drawing.
Fig. 1 is the sectional view of conduit pipe of the present invention;
Fig. 2 is the band sectional view of internal lining pipe that forms the conduit pipe of Fig. 1;
Fig. 3 is the band sectional view of another kind of form that forms the conduit pipe internal lining pipe of Fig. 1;
Fig. 4 is the schematic representation of the interior braided fabric graticule of band of Fig. 2 and 3;
Fig. 5 is the schematic representation of one embodiment of the present invention;
Fig. 6 represents that pipe end A is to the schematic representation of observing winding process from device shown in Figure 5;
Fig. 7 is the schematic representation of another embodiment of the invention;
Fig. 8 represents that pipe end A is to the schematic representation of observing winding process from device shown in Figure 7.
Embodiment
Composite corrugated tubular construction of plastics that described outer tube 11 strengthens for metal or tubular construction with the compound vertical rib of metal reinforced plastic.The plastics composite strip that described internal lining pipe 12 is strengthened by bilaminar fiber at least twines and is fitted on the outer tube wall along described outer tube wall continuous helical and forms, and the spiral that described internal lining pipe covers described outer tube twines seam 13.When the plastics composite strip that is strengthened by multi-layer fiber when internal lining pipe 12 was compounded to form, the winding seam 14 of each layer band was covered by the adjacent layer band.
Fig. 2 shows the band 20 that forms the conduit pipe internal lining pipe, comprises plastic strap basic unit 21 and the fiber-reinforced layer 22 that is embedded in the band basic unit.
Fig. 3 shows the band 20 of another kind of form, and wherein fiber-reinforced layer 22 is embedded in the surface of plastic strap basic unit 21.
Fig. 4 is the distribution map of braided fabric in the band, and it has illustrated the relation of warp 23 with parallel 24.
The fiber-reinforced layer 22 of the band 20 of Fig. 2-4 can be the non-metallic fiber braided fabric, also can be wire netting, particularly steel wire.By the hole on the fiber-reinforced layer 22, fiber-reinforced layer 22 is that a kind of structure stability is good with the band that the compound back of plastics forms, the composite strip of not delamination.
According to twining the needs that form internal lining pipe, the width that strengthens composite plastic band 20 can be selected between the 150-500 millimeter, and in order to cover all outer tube seams, selected width should be the integral multiple of width between outer tube seam; Thickness to be can realize that composite performance the best is a standard, the facility of taking into account rolling simultaneously and putting band, with the 2-5 millimeter for well.
The plastics that band uses can be polyethylene (PE), polypropylene (PP), PVC (PVC).
Referring to Fig. 5 and 6, as one embodiment of the present invention, twine the device 30 that band forms internal lining pipe along the spiral inner wall of outer tube and comprise a mobile stool 31, one group of support outer tube 11 and revolvable friction carrying roller 32 have been installed on it and have been driven the drive unit 33 that friction carrying roller 32 rotates, the rotation of friction carrying roller 32 drives outer tube 11 and rotates; Below carriage 31, install some can be on guide rail 34 axially movable wheel 35, move axially drive unit 39 and drive a wheel 35 and move vertically along the mobile outer tubes 11 that make carriage 32 drive and be placed on it of guide rail 34.A fixing cantilever support 36 is provided with some tape guide roller groups 38 and is used to support and send the band 20 that stores up tep reel 37 certainly on it; Heater 40 and adjustable in pressure joint pressure roller 41 is set on the cantilever support 36.Specific implementation process is as follows: drive bottom brackets 31 and move axially along guide rail 34 moving axially drive unit 39, thereby the outer tube 11 that is placed on the carriage 31 is moved axially; Along with moving axially of outer tube 11, fixing cantilever support 36 is with from the band 20 of storage tep reel 37 end near outer tubes 11; Carriage 31 stops, after the inwall of the end of band 20 and outer tube 11 ends carried out initial seam in the mode that covers the inwall seam, carriage 31 continues to move axially, when band 20 from outer tube 11 towards the outer tunnel end of storage tep reel when beginning to fit the inwall seam, carriage 31 chosen axis move to the direction to the storage tep reel, rotating driving device 33 drives 32 rotations of friction carrying roller simultaneously, rotates thereby drive outer tube 11.When band 20 from outer tube 11 away from the outer tunnel end of storage tep reel when beginning to fit the inwall seam, carriage 31 chosen axis are to moving to the direction away from the storage tep reel, rotating driving device 33 drives carrying rollers 32 rotations simultaneously, rotates thereby drive outer tube 11.Band 20 beginnings are twined along the spiral inner wall of outer tube 11, the faying surface of 40 pairs of outer tube walls of heater and band heating simultaneously, and the non-faying surface of 41 pairs of bands of pressure roller is exerted pressure, and pressure roller 41 has pressure controlled function.Strengthen composite plastic band 20 like this and be wound and be fitted on the inwall of outer tube 11, reach enhancing composite strip 12 and fuse into one with the compound outer tube 11 inwall plastic bondings of metal reinforced plastic.According to the plastics difference of selecting for use, heater 40 adopts electric heater or fired heater.
Like this, discharge out the enhancing composite strip 20 of Fixed width by cantilever support 36 and storage tep reel 37, the bonding fusion of starting of a end on compound outer tube 11 inwalls that metal strengthens, then along with the rotation of outer tube 11 with move, strengthen composite strip 20 and continuously be compound to the other end of pipe 11 from managing an end of 11, finishing the first layer internal lining pipe fits, axial motion in the other direction more as required then, strengthen composite strip 20 and in outer tube 11, carry out the applying of second layer internal lining pipe, form internal lining pipe 12 up to the needed number of plies and thickness.When second layer internal lining pipe is fitted, band can with the equidirectional applying of first layer, also can intersect the applying of (instead) direction with first layer.When the multilayer liner is bonding, can select the liner bonding mode of complex superposition.
Referring to Fig. 7 and 8, as another embodiment of the invention, twine the device 50 that band forms internal lining pipe along the spiral inner wall of outer tube and comprise pedestal 51, one group of support outer tube 11 and revolvable friction carrying roller 52 have been installed on it and have been driven the drive unit 53 that friction carrying roller 52 rotates, the rotation of friction carrying roller 52 drives outer tube 11 and rotates; Cantilever support 54 be fixedly connected on one can axially movable support 56 on, install below the support 56 some can be on guide rail 57 axially movable wheel 58, move axially drive unit 59 and drive a wheel 58 and make support 56 drive fixedly connected cantilever supports 54 and storage tep reels 37 thereon along guide rail 57 mobile to move vertically; Some tape guide rollers 55 are set on the cantilever support 54 are used to support and send the band 20 that stores up tep reel 37 certainly; Cantilever support 54 is provided with extrudes welding machine 42 and adjustable in pressure joint pressure roller 41.Specific implementation process is as follows: moving axially under the drive unit driving, support 56 moves axially along guide rail 57, thereby fixedly connected cantilever support 54 and storage tep reel 37 thereon moved vertically; Along with moving axially of cantilever support 54, cantilever support 54 is with leaning on the into end of outer tube 11 from the band 20 that stores up tep reel 37; Support 56 stops, with the inwall of the end of band 20 and outer tube 11 ends with the mode seam that covers the inwall seam after, support 56 continues to move axially, when band 20 from outer tube 11 towards the outer tunnel end of storage tep reel when beginning to fit the inwall seam, support 56 chosen axis move to the direction of advance to pedestal 51, rotating driving device 53 drives 52 rotations of friction carrying roller simultaneously, rotates thereby drive outer tube 11; When band 20 from outer tube 11 away from the outer tunnel end of storage tep reel when beginning to fit the inwall seam, support 56 chosen axis are to moving to the direction of retreat away from pedestal 51, rotating driving device 53 drives carrying rollers 52 rotations simultaneously, rotates thereby drive outer tube 11; Band 20 beginning is twined along the spiral inner wall of outer tube 11, extrudes simultaneously that extrusion plastic melts material between the binding face of 42 pairs of outer tube walls of welding machine and band, and the non-applying side of 41 pairs of bands of pressure roller is exerted pressure, and pressure roller 41 has pressure controlled function.Strengthen composite plastic band 20 like this and be wound and be fitted on the inwall of outer tube 11, reach enhancing composite strip 20 and fuse into one with the compound outer tube 11 inwall plastic bondings of steel band reinforced plastic.
Discharge out the enhancing composite strip 20 of Fixed width by cantilever support 54 and storage tep reel 37, the bonding applying of starting of a end on compound outer tube 11 inwalls that metal strengthens, rotation and cantilever support 54 along with outer tube 11 moves axially then, strengthen composite strip 20 and continuously be compound to the other end of pipe 11 from managing an end of 11, finish pipe lining applying in the first layer, axial motion in the other direction or return to the starting point of first layer more as required then, strengthen composite strip 20 and in outer tube 11, carry out the applying of second layer internal lining pipe, form internal lining pipe 12 up to the needed number of plies and thickness.When second layer internal lining pipe is bonding, band can with the equidirectional applying of first layer, also can intersect the applying of (instead) direction with first layer.When the multilayer internal lining pipe is fitted, can select the internal lining pipe laminating type of complex superposition.
The foregoing description is only used for explaining the present invention, embodiments of the present invention are not formed restriction, can change mode of execution according to notion of the present invention, for example, provide the friction carrying roller that rotatablely moves also can be replaced by rotary chuck among the present invention, these replacements will drop in the category of notion of the present invention.
Claims (23)
1. a spiral twines the compound conduit pipe of enhancing that forms, and comprises that spiral twines the compound outer tube of enhancing that forms, and it is characterized in that also comprising by fiber reinforced plastic composite strip spiral and twines the enhancing compound lining pipe that forms.
2. conduit pipe according to claim 1 is characterized in that described outer tube is compound bellows structure of metal reinforced plastic or the tubular construction with the compound vertical rib of metal reinforced plastic.
3. conduit pipe according to claim 2, it is characterized in that described internal lining pipe is twined and is fitted on the outer tube wall along described outer tube wall continuous helical by the compound band of bilaminar fiber reinforced plastic at least forms, and the spiral that described internal lining pipe covers described outer tube twines seam.
4. conduit pipe according to claim 3, the width that it is characterized in that described band are the integral multiples that the outer tube spiral twines width between the seam.
5. the band of the internal lining pipe of a conduit pipe that is used to form claim 3 is characterized in that comprising plastic strap basic unit and the fiber-reinforced layer compound with band basic unit, and fiber-reinforced layer is wire netting or non metal fiber woven thing.
6. band according to claim 5 is characterized in that described fiber-reinforced layer is embedded in band basic unit inside, or is embedded in the band substrate surface.
7. band according to claim 5 is characterized in that described wire netting is a steel wire, and described non metal fiber woven thing comprises a kind of of nylon fiber, carbon fiber, aramid fibre, glass fibre or their combination.
8. band according to claim 7, the warp number that it is characterized in that described fiber-reinforced layer be the parallel number one to twice, its fibre tensile strength is more than 5 times of employed basic unit plastics.
9. band according to claim 5 is characterized in that used basic unit's plastics are PE, PP, PVC.
10. make the method for the described conduit pipe of claim 1, comprise the steps: that spiral twines the compound enhancing outer tube of formation; Cover outer tube seam at least two layers of band of spiral winding continuously along outer tube wall, to or bond on the outer tube wall with the direct first layer band seam of fitting of outer tube wall when spiral twines, the non-coating surface of the first layer of roll extrusion simultaneously band makes the evenly closely seam or bonding of coating surface and outer tube wall; Pipe end place band tack is handled the back form the internal lining pipe that is combined on the outer tube wall.
11. method according to claim 10, wherein the width of the band that twines along the outer tube wall continuous helical is the integral multiple that the outer tube spiral twines width between the seam.
12. method according to claim 10, described seam comprises the flame heating seam, and hot blast heats seam and extrudes seam.
13. method according to claim 10, further comprise when the time along outer tube wall continuous helical winding multi-layer tapes, the spiral winding direction of each layer band in the same way or oppositely, the winding seam of adjacent each layer band covers mutually in the time of in the same way, seam or bonding being integral between each layer band.
14. method according to claim 10, wherein along outer tube wall cover outer tube seam continuously spiral to twine be to move axially realization when outer tube is rotated.
15. method according to claim 10, wherein along outer tube wall cover outer tube seam continuously spiral to twine be that band moves axially realization when outer tube is rotated.
16. make the device of the described conduit pipe of claim 1, comprise that spiral twines the device that forms outer tube, it is characterized in that also comprising the device that discharges the described internal lining pipe band of formation; Twine the wind of described band along the outer tube wall spiral; Band is added the heating welding device that is thermally welded to outer tube wall; Make the even heating of band closely be welded to press fit device on the outer tube wall; Cutting tack device.
17. device according to claim 16 is characterized in that wind comprises the device that drives the outer tube rotation and makes the axially movable device of outer tube.
18. device according to claim 16 is characterized in that wind comprises the device that drives the outer tube rotation and makes the axially movable device of band.
19. device according to claim 17, the device that it is characterized in that driving the outer tube rotation is one group of support outer tube and rotatable friction carrying roller; Making the axially movable device of outer tube is a fixed friction carrying roller and along the axially movable carriage of outer tube.
20. device according to claim 18, the device that it is characterized in that driving the outer tube rotation is one group of support outer tube and rotatable friction carrying roller; Make the axially movable device of band be one along the axially movable support of outer tube, it is provided with the device that discharge to form described internal lining pipe band.
21., it is characterized in that discharging the device that forms described internal lining pipe band and comprise storage tep reel, cantilever support and be arranged on tape guide roller group on the cantilever support according to claim 16 or 20 described devices.
22. device according to claim 21 is characterized in that heating welding device is arranged on the fired heater on the cantilever support, storage heater and extrude welding machine.
23. device according to claim 21 is characterized in that press fit device is arranged on the press-roller device of the adjustable seamless power on the cantilever support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204891.9A CN102269298B (en) | 2011-07-21 | 2011-07-21 | Conduit pipe, manufactures band, the method and apparatus of conduit pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204891.9A CN102269298B (en) | 2011-07-21 | 2011-07-21 | Conduit pipe, manufactures band, the method and apparatus of conduit pipe |
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| CN102269298A true CN102269298A (en) | 2011-12-07 |
| CN102269298B CN102269298B (en) | 2015-08-05 |
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| CN102563231A (en) * | 2012-01-10 | 2012-07-11 | 哈尔滨斯达维机械制造有限公司 | Double reinforced plastic composite water pipe, device and method for manufacturing water pipe, and special-shaped strip for manufacturing water pipe |
| CN102777710A (en) * | 2012-08-29 | 2012-11-14 | 哈尔滨斯达维机械制造有限公司 | Multilayer steel compound belt material winding water input pipe, preparation method and device of pipe and steel compound belt material |
| CN103071698A (en) * | 2012-12-26 | 2013-05-01 | 伦慧东 | Processing technology for enhanced spiral rib enhanced steel plastic composite pipe |
| WO2015024363A1 (en) * | 2013-08-20 | 2015-02-26 | Wu Gengtian | Pressure pipe formed by hot filament winding of composite winding strips and filament winding method |
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| CN102563231A (en) * | 2012-01-10 | 2012-07-11 | 哈尔滨斯达维机械制造有限公司 | Double reinforced plastic composite water pipe, device and method for manufacturing water pipe, and special-shaped strip for manufacturing water pipe |
| CN102563231B (en) * | 2012-01-10 | 2014-05-07 | 哈尔滨斯达维机械制造有限公司 | Double reinforced plastic composite water pipe, device and method for manufacturing water pipe, and special-shaped strip for manufacturing water pipe |
| CN102777710A (en) * | 2012-08-29 | 2012-11-14 | 哈尔滨斯达维机械制造有限公司 | Multilayer steel compound belt material winding water input pipe, preparation method and device of pipe and steel compound belt material |
| CN103071698A (en) * | 2012-12-26 | 2013-05-01 | 伦慧东 | Processing technology for enhanced spiral rib enhanced steel plastic composite pipe |
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| WO2015024363A1 (en) * | 2013-08-20 | 2015-02-26 | Wu Gengtian | Pressure pipe formed by hot filament winding of composite winding strips and filament winding method |
| CN104421536A (en) * | 2013-08-20 | 2015-03-18 | 吴耕田 | Pressure pipe formed by thermal winding of composite wrapping belt and forming method |
| CN104421536B (en) * | 2013-08-20 | 2016-08-10 | 吴耕田 | The hot Wrapping formed manometer tube of composite winding belt and forming method |
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