CN203082388U - High-strength hollow circular steel skeleton winding and reinforcing hollow tube - Google Patents
High-strength hollow circular steel skeleton winding and reinforcing hollow tube Download PDFInfo
- Publication number
- CN203082388U CN203082388U CN 201220744002 CN201220744002U CN203082388U CN 203082388 U CN203082388 U CN 203082388U CN 201220744002 CN201220744002 CN 201220744002 CN 201220744002 U CN201220744002 U CN 201220744002U CN 203082388 U CN203082388 U CN 203082388U
- Authority
- CN
- China
- Prior art keywords
- steel skeleton
- hollow circular
- layer
- hollow
- steel
- 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 - Lifetime
Links
Images
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model discloses a high-strength hollow circular steel skeleton winding and reinforcing hollow tube which comprises a tube body and a steel skeleton structure, wherein the steel skeleton structure comprises at least two layers of steel skeletons which are spirally wound on the outer peripheral wall of the tube body and are made of hollow circular tubes, anti-corrosion coating layers are arranged on the outer peripheral walls of the steel skeletons, reinforcement tube bodies are arranged outside the steel skeleton structure and are coaxially arranged with the tube body, and two adjacent anti-corrosion coating layers, the innermost anti-corrosion coating layer of the steel skeleton structure and the tube body, and the reinforcement tube bodies and the outermost anti-corrosion coating layer of the steel skeleton structure are all connected together in a fusion mode. Due to the fact that the steel skeletons which are made of the hollow circular tubes are used, the stress performance can be effectively enhanced, the pipe diameter of a reinforcing pipe can be made to be larger, due to the fact that the cross sections of the steel skeletons are of a circular shape, connecting among the steel skeletons, the anti-corrosion coating layers and the tube wall is firm, disengaging due to stress creepage can not occur, using is safe, service life is long, the steel skeletons are arranged to be at least two layers, the reinforcement tube bodies are arranged, and the stress performance can be further enhanced.
Description
Technical field
The utility model relates to a kind of steel and moulds composite corrugated pipe, and concrete is that the hollow circular Steel Skeleton of a kind of high strength twines the enhancing hollow tube.
Background technique
Existing Steel Skeleton spiral winding corrugated pipe structural type is single, as publication number is that the Chinese patent of CN 202228805U discloses a kind of steel band reinforced polyethylene spiral ripple pipe, this steel band reinforced polyethylene spiral ripple pipe comprises spiral helicine hollow tubular product body, described hollow tubular product body is made of polyethylene skin and polyethylene inner layer, the hollow tubular product body surface is provided with spiral salient at interval, and described spiral salient is a four-layer structure.
The four-layer structure of this steel band reinforced polyethylene spiral ripple pipe is respectively polyethylene skin, steel belt layer, adhering resin layer I and polyethylene inner layer, the cross section that is spirally wound on the steel belt layer on the hollow tubular product body is " Ω " shape, its both sides are adhesively fixed by polyethylene skin and polyethylene inner layer, though adopt the steel belt layer of this structure can strengthen the intensity of bellows to a certain extent, also have following defective:
1, because bellows is general buried in underground use, its effect that not only can be under pressure, but also, can be subjected to warping force because geologic structure changes; Yet, the cross section of the steel belt layer of existing bellows is " Ω " shape, the ripple pipe range phase be subjected under the situation of peristaltic forces with burying, and " Ω " shape steel band internal stress of when moulding, assembling, easily make the bonding meeting between its both sides and polyethylene skin and the polyethylene inner layer loosening, even come off, cause the ring stiffness of bellows destroyed, reduce working life, even cause accident resulting from poor quality of projects;
2, because the cross section of existing steel belt layer is " Ω " shape, under the effect of bearing big pressure or torsion, easily produce distortion, for the ring stiffness that guarantees big caliber bellows reaches usage requirement, to increase thickness of strips accordingly, the requirement of mechanical strength of steel belt layer improves, but this all has very high requirement to forming technique and forming equipment, and certain narrow limitation arranged, and cause the production of bellows and fabricating cost to rise, and the design of the crest of more existing steel belt layers can not realize machine shaping;
3, owing to the thickness of steel belt layer can thicken along with the needs of the increase ring stiffness of bellows diameter, this causes the moulding of steel belt layer difficult more, under existing forming technique restriction, the thickness of steel belt layer is restricted, cause the diameter of bellows can not be too big, make that the design and use of bellows are limited to.
In view of this, the utility model is intended to explore the hollow circular Steel Skeleton winding of a kind of high strength and strengthens hollow tube, and the hollow circular Steel Skeleton of this high strength twines and strengthens the defective that hollow tube can effectively overcome existing bellows, strengthens its intensity and prolongs its working life.
Summary of the invention
The technical problems to be solved in the utility model is to propose the hollow circular Steel Skeleton of a kind of high strength to twine the enhancing hollow tube, the hollow circular Steel Skeleton of this high strength twines the enhancing hollow tube can effectively strengthen its its ring stiffness and operational safety, and can prolong its working life.
Realize above-mentioned technical purpose, the hollow circular Steel Skeleton of high strength of the present utility model twines and strengthens hollow tube, comprise body and steel skeleton construction, described steel skeleton construction comprises and two-layerly at least is spirally wound on the body periphery wall and the Steel Skeleton that adopts hollow circular-tube to make, the periphery wall of described Steel Skeleton is provided with anticorrosion coating layer, described steel skeleton construction outer with the coaxial reinforcement body that is provided with of described body, between the anticorrosion coating layer of adjacent two layers Steel Skeleton, between the anticorrosion coating layer of innermost layer Steel Skeleton and the body and strengthen that equal fusion connects as one between the anticorrosion coating layer of body and outermost surface Steel Skeleton.
Further, on the axial cross section of described body, in the described Steel Skeleton of adjacent two layers, the hollow circular cross section of any one of outer Steel Skeleton is between two hollow circular cross sections of internal layer Steel Skeleton or tangent with two hollow circular cross sections of internal layer Steel Skeleton.
Further, with two hollow circular cross sections of the described internal layer Steel Skeleton of the corresponding setting of arbitrary hollow circular cross section of described outer Steel Skeleton between tangent or distance of center circle less than the diameter of the hollow circular cross section of outer Steel Skeleton.
Further, described steel skeleton construction comprises the two-layer Steel Skeleton that is spirally wound on the body periphery wall.
Further, described body, reinforcement body and anticorrosion coating layer all adopt polyethylene to make.
Further, the inner circle wall of described Steel Skeleton and periphery wall are provided with anticorrosion galvanizing layer.
Further, be provided with the adhering resin layer between the anticorrosion galvanizing layer of described Steel Skeleton periphery wall and the described anticorrosion coating layer.
Further, be provided with one deck oxidation prevention layer at least in the described adhering resin layer.
The beneficial effects of the utility model are:
The hollow circular Steel Skeleton of high strength of the present utility model twines the enhancing hollow tube and has following beneficial effect:
1, makes by the hollow circular-tube that adopts cross section to be open circles Steel Skeleton, in working process, only need adopt existing hollow circular-tube brake forming is that helical gets final product, do not need the cross section of Steel Skeleton is carried out moulding, reduced the moulding requirement of Steel Skeleton, make the hollow circular Steel Skeleton of high strength of the present utility model twine and strengthen the limitation that hollow tube no longer is subjected to existing forming technique, it is bigger that its diameter can be done according to actual needs;
2, Steel Skeleton adopts hollow circular-tube to make, and its periphery wall is an one by anticorrosion coating layer and body welding, in use, regardless of being to be under pressure or torsion, anticorrosion coating layer all not can and Steel Skeleton between break away from longer service life;
3, the rounded Steel Skeleton of cross section is the steel belt layer of " Ω " shape compared to traditional cross section, its stress performance is better, traditional cross section is the steel belt layer of " Ω " shape in the time spent of doing that is subjected to bigger pressure and torsion, the easy concave deformation of its protruding arched part, and the circular cross-section Steel Skeleton is because its symmetry properties, can effectively resist bigger pressure and torsion, prevent distortion;
4, Steel Skeleton is set to two-layer at least, can effectively strengthen stress performance on the one hand, can effectively reduce the diameter of Steel Skeleton on the other hand, be convenient to moulding, when adopting one deck Steel Skeleton, satisfying under the stress condition, may cause the Steel Skeleton diameter too big or thickness is too thick, and then cause Steel Skeleton moulding cost to increase, be set to two-layer at least by Steel Skeleton, can effectively reduce the diameter and the wall thickness of Steel Skeleton, be convenient to manufacturing;
5, the reinforcement body is set, can increase the join strength between body and the Steel Skeleton on the one hand, prevent that outer bound pair Steel Skeleton from producing along the axial power of body, make between Steel Skeleton and the body be connected more reliable, can strengthen stress performance on the other hand, promptly strengthen body and also play a part to thicken body.
Description of drawings
Fig. 1 is that the hollow circular Steel Skeleton of the utility model high strength twines the structural representation that strengthens hollow tube first embodiment.
Fig. 2 is that the hollow circular Steel Skeleton of the utility model high strength twines the structural representation that strengthens hollow tube second embodiment;
Fig. 3 is that the hollow circular Steel Skeleton of the utility model high strength twines the structural representation that strengthens hollow tube the 3rd embodiment.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
First embodiment
As shown in Figure 1, twine the structural representation that strengthens hollow tube first embodiment for the hollow circular Steel Skeleton of the utility model high strength.The hollow circular Steel Skeleton of the high strength of present embodiment twines and strengthens hollow tube, comprise body 1 and steel skeleton construction, steel skeleton construction comprises the two-layer at least Steel Skeleton 2 that is spirally wound on the body periphery wall, the hollow circular-tube that Steel Skeleton 2 adopts cross section to be hollow circle is made, the periphery wall of Steel Skeleton 2 is provided with anticorrosion coating layer 3, steel skeleton construction is outer strengthens body 4 with body 1 coaxial being provided with, between the anticorrosion coating layer 3 of adjacent two layers Steel Skeleton, between the anticorrosion coating layer 3 of innermost layer Steel Skeleton and the body 1 and strengthen that equal fusion connects as one between the anticorrosion coating layer 3 of body 4 and outermost surface Steel Skeleton.The steel skeleton construction of present embodiment comprises the two-layer Steel Skeleton 2 that is spirally wound on the body periphery wall, and certainly, steel skeleton construction also can be set to Compound Steel skeleton 2 or more than three layers, and its principle is identical with two-layer Steel Skeleton 2, is not repeated.
As shown in Figure 1, on the axial cross section of body 1, in the adjacent two layers Steel Skeleton 2, the hollow circular cross section 2a of any one of outer Steel Skeleton 2 is between two hollow circular cross section 2b of internal layer Steel Skeleton and 2c or tangent with two the hollow circular cross section 2b and the 2c of internal layer Steel Skeleton.With tangent between two hollow circular cross section 2b of the internal layer Steel Skeleton of the corresponding setting of arbitrary hollow circular cross section 2a of outer Steel Skeleton 2 and the 2c or distance of center circle diameter less than the hollow circular cross section 2a of outer Steel Skeleton.The internal layer Steel Skeleton 2 of present embodiment is closely arranged, promptly tangent between any two adjacent hollow circular cross section 2b of internal layer Steel Skeleton 2 and 2c, the outer Steel Skeleton 2 of present embodiment is also closely arranged, promptly tangent between any two adjacent hollow circular cross sections of outer Steel Skeleton 2, two the hollow circular cross section 2b and the 2c of hollow circular cross section 2a of any one of outer Steel Skeleton 2 and internal layer Steel Skeleton are tangent.Adopt the hollow circular Steel Skeleton of high strength of this structure to twine enhancing hollow tubular structure compactness, stress performance is better.
Further, the body 1 of present embodiment, reinforcement body 4 and anticorrosion coating layer 3 all adopt polyethylene to make, and also can adopt other similar plastic materialss to make certainly, are not repeated.The inner circle wall and the periphery wall of Steel Skeleton 2 are provided with anticorrosion galvanizing layer, by anticorrosion galvanizing layer is set, can prevent Steel Skeleton 2 oxidized corrosion.Be provided with the adhering resin layer between the anticorrosion galvanizing layer of Steel Skeleton 2 periphery walls and the anticorrosion coating layer 3.By the adhering resin layer is set, Steel Skeleton 2 and anticorrosion coating layer 3 are connected firmly.Preferably, be equipped with one deck oxidation prevention layer at least in the adhering resin layer, the oxidation prevention layer of present embodiment is set to 2 layers.By oxidation prevention layer is set, can prevent that oxygen from penetrating into Steel Skeleton 2 from anticorrosion coating layer 3 and adhering resin layer and causing Steel Skeleton 2 oxidation corrosions, can effectively improve the hollow circular Steel Skeleton of present embodiment high strength and twine the safe operating life that strengthens hollow tube.
The hollow circular Steel Skeleton of the high strength of present embodiment twines the enhancing hollow tube and has following beneficial effect:
1, makes by the hollow circular-tube that adopts cross section to be open circles Steel Skeleton 2, in working process, only need adopt existing hollow circular-tube brake forming is that helical gets final product, do not need the cross section of Steel Skeleton 2 is carried out moulding, reduced the moulding requirement of Steel Skeleton 2, make the hollow circular Steel Skeleton of high strength of present embodiment twine the limitation that the enhancing hollow tube no longer is subjected to existing forming technique, it is bigger that its diameter can be done according to actual needs;
2, Steel Skeleton 2 adopts hollow circular-tubes to make, and its periphery wall is one by anticorrosion coating layer 3 with body 1 welding, in use, no matter be to be under pressure or torsion, anticorrosion coating layer 3 all not can and Steel Skeleton between break away from longer service life;
3, the rounded Steel Skeleton 2 of cross section is the steel belt layer of " Ω " shape compared to traditional cross section, its stress performance is better, traditional cross section is the steel belt layer of " Ω " shape in the time spent of doing that is subjected to bigger pressure and torsion, the easy concave deformation of its protruding arched part, and the circular cross-section Steel Skeleton is because its symmetry properties, can effectively resist bigger pressure and torsion, prevent distortion;
4, Steel Skeleton 2 is set to two-layer at least, can effectively strengthen stress performance on the one hand, can effectively reduce the diameter of Steel Skeleton 2 on the other hand, be convenient to moulding, when adopting one deck Steel Skeleton 2, satisfying under the stress condition, may cause Steel Skeleton 2 diameters too big or thickness is too thick, and then cause Steel Skeleton moulding cost to increase, be set to two-layer at least by Steel Skeleton, can effectively reduce the diameter and the wall thickness of Steel Skeleton, be convenient to manufacturing;
5, reinforcement body 4 is set, can increase the join strength between body 1 and the Steel Skeleton 2 on the one hand, prevent that outer bound pair Steel Skeleton 2 from producing along the axial power of body 1, make between Steel Skeleton 2 and the body 1 be connected more reliable, can strengthen stress performance on the other hand, promptly strengthen body 4 and also play a part to thicken body.
Second embodiment
As shown in Figure 2, twine the structural representation that strengthens hollow tube second embodiment for the hollow circular Steel Skeleton of the utility model high strength.The hollow circular Steel Skeleton of the high strength of present embodiment twines and strengthens hollow tube, comprise body 1 and steel skeleton construction, steel skeleton construction comprises the two-layer at least Steel Skeleton 2 that is spirally wound on the body periphery wall, the hollow circular-tube that Steel Skeleton 2 adopts cross section to be hollow circle is made, the periphery wall of Steel Skeleton 2 is provided with anticorrosion coating layer 3, steel skeleton construction is outer strengthens body 4 with body 1 coaxial being provided with, between the anticorrosion coating layer 3 of adjacent two layers Steel Skeleton, between the anticorrosion coating layer 3 of innermost layer Steel Skeleton and the body 1 and strengthen that equal fusion connects as one between the anticorrosion coating layer 3 of body 4 and outermost surface Steel Skeleton.The steel skeleton construction of present embodiment comprises the two-layer Steel Skeleton 2 that is spirally wound on the body periphery wall, and certainly, steel skeleton construction also can be set to Compound Steel skeleton 2 or more than three layers, and its principle is identical with two-layer Steel Skeleton 2, is not repeated.
As shown in Figure 2, on the axial cross section of body 1, in the adjacent two layers Steel Skeleton 2, the hollow circular cross section 2a of any one of outer Steel Skeleton 2 is between two hollow circular cross section 2b of internal layer Steel Skeleton and 2c or tangent with two the hollow circular cross section 2b and the 2c of internal layer Steel Skeleton.With tangent between two hollow circular cross section 2b of the internal layer Steel Skeleton of the corresponding setting of arbitrary hollow circular cross section 2a of outer Steel Skeleton 2 and the 2c or distance of center circle diameter less than the hollow circular cross section 2a of outer Steel Skeleton.The internal layer Steel Skeleton 2 of present embodiment is closely arranged, promptly tangent between any two adjacent hollow circular cross section 2b of internal layer Steel Skeleton 2 and 2c, the outer Steel Skeleton 2 of present embodiment is spaced, the distance of center circle of any two adjacent hollow circular cross section 2a that is the outer Steel Skeleton 2 of present embodiment is the twice of the diameter of internal layer Steel Skeleton 2 hollow circular cross sections, and two the hollow circular cross section 2b and the 2c of hollow circular cross section 2a of any one of outer Steel Skeleton 2 and internal layer Steel Skeleton are tangent.The diameter of the hollow circular cross section of outer Steel Skeleton 2 can be set to less than the hollow diameter of a circle of the cross section of internal layer Steel Skeleton 2.Adopt the hollow circular Steel Skeleton of high strength of this structure to twine the enhancing hollow tube when guaranteeing to be subjected to force intensity, also can save material, save cost, the big advantage of Guan Jingyue is obvious more.
Other structures of present embodiment are identical with first embodiment, tired no longer one by one stating.
The 3rd embodiment
As shown in Figure 3, twine the structural representation that strengthens hollow tube the 3rd embodiment for the hollow circular Steel Skeleton of the utility model high strength.The hollow circular Steel Skeleton of the high strength of present embodiment twines and strengthens hollow tube, comprise body 1 and steel skeleton construction, steel skeleton construction comprises the two-layer at least Steel Skeleton 2 that is spirally wound on the body periphery wall, the hollow circular-tube that Steel Skeleton 2 adopts cross section to be hollow circle is made, the periphery wall of Steel Skeleton 2 is provided with anticorrosion coating layer 3, steel skeleton construction is outer strengthens body 4 with body 1 coaxial being provided with, between the anticorrosion coating layer 3 of adjacent two layers Steel Skeleton, between the anticorrosion coating layer 3 of innermost layer Steel Skeleton and the body 1 and strengthen that equal fusion connects as one between the anticorrosion coating layer 3 of body 4 and outermost surface Steel Skeleton.The steel skeleton construction of present embodiment comprises the two-layer Steel Skeleton 2 that is spirally wound on the body periphery wall, and certainly, steel skeleton construction also can be set to Compound Steel skeleton 2 or more than three layers, and its principle is identical with two-layer Steel Skeleton 2, is not repeated.
As shown in Figure 3, on the axial cross section of body 1, in the adjacent two layers Steel Skeleton 2, the hollow circular cross section 2a of any one of outer Steel Skeleton 2 is between two hollow circular cross section 2b of internal layer Steel Skeleton and 2c or tangent with two the hollow circular cross section 2b and the 2c of internal layer Steel Skeleton.With tangent between two hollow circular cross section 2b of the internal layer Steel Skeleton of the corresponding setting of arbitrary hollow circular cross section 2a of outer Steel Skeleton 2 and the 2c or distance of center circle diameter less than the hollow circular cross section 2a of outer Steel Skeleton.Two adjacent hollow circular cross section 2b and 2c that present embodiment is positioned at internal layer Steel Skeleton 2 form one group and tangent, the internal layer Steel Skeleton 2 that is present embodiment is made up of two Spiral Steel Pipes, two Spiral Steel Pipes remain tangent in the spiral process, in like manner, the quantity of the steel pipe of composition Steel Skeleton can also be for more than two and two.The outer Steel Skeleton 2 of present embodiment is spaced, the helical pitch that is the outer Steel Skeleton 2 of present embodiment equates with the helical pitch of internal layer Steel Skeleton 2, and two the hollow circular cross section 2b and the 2c of hollow circular cross section 2a of any one of outer Steel Skeleton 2 and internal layer Steel Skeleton are tangent.The diameter of the hollow circular cross section of outer Steel Skeleton 2 can be set to less than the hollow diameter of a circle of the cross section of internal layer Steel Skeleton 2.Adopt the hollow circular Steel Skeleton of high strength of this structure to twine the enhancing hollow tube when guaranteeing to be subjected to force intensity, also can save material, save cost, the big advantage of Guan Jingyue is obvious more.
Other structures of present embodiment are identical with first embodiment, tired no longer one by one stating.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (8)
1. the hollow circular Steel Skeleton of high strength twines and strengthens hollow tube, it is characterized in that: comprise body and steel skeleton construction, described steel skeleton construction comprises and two-layerly at least is spirally wound on the body periphery wall and the Steel Skeleton that adopts hollow circular-tube to make, the periphery wall of described Steel Skeleton is provided with anticorrosion coating layer, described steel skeleton construction outer with the coaxial reinforcement body that is provided with of described body, between the anticorrosion coating layer of adjacent two layers Steel Skeleton, between the anticorrosion coating layer of innermost layer Steel Skeleton and the body and strengthen that equal fusion connects as one between the anticorrosion coating layer of body and outermost surface Steel Skeleton.
2. the hollow circular Steel Skeleton of high strength according to claim 1 twines and strengthens hollow tube, it is characterized in that: on the axial cross section of described body, in the described Steel Skeleton of adjacent two layers, the hollow circular cross section of any one of outer Steel Skeleton is between two hollow circular cross sections of internal layer Steel Skeleton or tangent with two hollow circular cross sections of internal layer Steel Skeleton.
3. the hollow circular Steel Skeleton of high strength according to claim 2 twines and strengthens hollow tube, it is characterized in that: with tangent between two hollow circular cross sections of the described internal layer Steel Skeleton of the corresponding setting of arbitrary hollow circular cross section of described outer Steel Skeleton or the distance of center circle diameter less than the hollow circular cross section of outer Steel Skeleton.
4. the hollow circular Steel Skeleton of high strength according to claim 3 twines and strengthens hollow tube, and it is characterized in that: described steel skeleton construction comprises the two-layer Steel Skeleton that is spirally wound on the body periphery wall.
5. the hollow circular Steel Skeleton of high strength according to claim 1 twines and strengthens hollow tube, it is characterized in that: described body, reinforcement body and anticorrosion coating layer all adopt polyethylene to make.
6. twine the enhancing hollow tube according to the hollow circular Steel Skeleton of each described high strength of claim 1-5, it is characterized in that: the inner circle wall and the periphery wall of described Steel Skeleton are provided with anticorrosion galvanizing layer.
7. the hollow circular Steel Skeleton of high strength according to claim 6 twines and strengthens hollow tube, it is characterized in that: be provided with the adhering resin layer between the anticorrosion galvanizing layer of described Steel Skeleton periphery wall and the described anticorrosion coating layer.
8. the hollow circular Steel Skeleton of high strength according to claim 7 twines and strengthens hollow tube, it is characterized in that: be provided with one deck oxidation prevention layer at least in the described adhering resin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220744002 CN203082388U (en) | 2012-12-29 | 2012-12-29 | High-strength hollow circular steel skeleton winding and reinforcing hollow tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220744002 CN203082388U (en) | 2012-12-29 | 2012-12-29 | High-strength hollow circular steel skeleton winding and reinforcing hollow tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203082388U true CN203082388U (en) | 2013-07-24 |
Family
ID=48828226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220744002 Expired - Lifetime CN203082388U (en) | 2012-12-29 | 2012-12-29 | High-strength hollow circular steel skeleton winding and reinforcing hollow tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203082388U (en) |
-
2012
- 2012-12-29 CN CN 201220744002 patent/CN203082388U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2011072562A1 (en) | Reinforcing method for plastic-steel-wound tube and steel-belt-reinforced composite strip | |
| CN109140059A (en) | Hollow wall tubing and its manufacturing method | |
| CN103712000A (en) | Multi-layer wound composite tube | |
| CN203082385U (en) | High-strength hollow circular steel skeleton winding and reinforcing corrugated pipe | |
| CN105986620A (en) | Aluminum alloy welding hollow sphere node | |
| CN201954131U (en) | Mesh steel rod enhanced steel-plastic composite pipe with double-hollow corrugated steel bands | |
| CN203082388U (en) | High-strength hollow circular steel skeleton winding and reinforcing hollow tube | |
| CN202165713U (en) | Hollow strip material for double-plain-wall pipe and double-plain-wall pipe | |
| CN105114715A (en) | Steel-concrete combined structure pipeline with spiral reinforcing ring and manufacturing method of steel-concrete combined structure pipeline | |
| CN111409312A (en) | High-torsion-resistance carbon fiber woven pultrusion composite material pipe and preparation method thereof | |
| CN203082386U (en) | High-strength hollow circular steel skeleton winding pipe | |
| CN203082387U (en) | Hollow tube wound by high-strength hollow circular steel framework | |
| CN201326838Y (en) | Steel-plastic composite pipe | |
| CN203604831U (en) | Hole-shaped reinforcement composite steel-belt-wound bellow | |
| CN102913744A (en) | Pipe fitting made of composite material with high-tensile load and manufacturing method of pipe fitting | |
| CN202674796U (en) | Profiled bar for winding corrugated pipe with reinforced inner ribs and winding corrugated pipe with reinforced inner ribs | |
| CN201909123U (en) | Reticular steel bar reinforced type double hollow abnormal steel belt steel-plastic composite pipe material | |
| CN204692783U (en) | A kind of Chinese character pin-shaped PP strengthens wound structure and strengthens hollow tube | |
| CN210770731U (en) | Novel plastic-coated composite steel pipe | |
| CN220540499U (en) | PP double-high-rib winding composite pipe | |
| CN214663647U (en) | Steel band reinforcing bellows | |
| CN218408880U (en) | Buried double-high-rib reinforced polyethylene winding pipe for drainage | |
| CN203671062U (en) | Multi-layer winding composite pipe | |
| CN213871462U (en) | High-strength krah pipe | |
| CN219033466U (en) | Steel core FPPE high-strength non-excavation blow-down pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
|
| CX01 | Expiry of patent term |