CN105401596A - Combined arched pipeline - Google Patents
Combined arched pipeline Download PDFInfo
- Publication number
- CN105401596A CN105401596A CN201510963690.5A CN201510963690A CN105401596A CN 105401596 A CN105401596 A CN 105401596A CN 201510963690 A CN201510963690 A CN 201510963690A CN 105401596 A CN105401596 A CN 105401596A
- Authority
- CN
- China
- Prior art keywords
- hollow cavity
- cavity structure
- sheet bar
- unit sheet
- pipeline
- 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.)
- Granted
Links
- 230000008878 coupling Effects 0.000 claims description 31
- 238000010168 coupling process Methods 0.000 claims description 31
- 238000005859 coupling reaction Methods 0.000 claims description 31
- 239000002184 metal Substances 0.000 claims description 30
- 229910052751 metal Inorganic materials 0.000 claims description 30
- 239000004567 concrete Substances 0.000 claims description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 230000010412 perfusion Effects 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000010410 reperfusion Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a combined arched pipeline comprising arched pipe joints which are formed by splicing unit sheets, wherein the arched pipe joints are spliced along the axial direction to form an arched pipeline; and the outer sides and/or inner sides of the unit sheets are provided with hollow cavity structures of which the cross section peripheries are closed. The pipeline is of an arched structure with a hollow cavity structure, so that the torsional rigidity and vertical unstability resistance are improved; the bottom of the pipeline is a straight surface or an inverted arch surface so as to be convenient for transit or wire/pipeline arrangement; a hidden connecting structure is adopted between every two adjacent arched pipe joints, and no additional pipeline space is occupied, so that the pipeline is practical, attractive in appearance and the like; and the utilization ratio as well as net transit width and height of a net space inside the arched pipeline are increased, so that the height of the pipeline is reduced, and all the burying depth, foundation excavation depth and project amount are reduced.
Description
Technical field
The invention discloses a kind of steel pipe, particularly relate to a kind of combined type arched conduit.
Background technology
At present, Urban Underground composite duct and highway culvert and roads and tunnels lining cutting many employings steel concrete are made, and its form of structure has on-the-spot monobloc cast and precast assembly, and cross sectional shape mainly contains rectangle and circle shape.But reinforced concrete structure, not only cost is very high, whole requirement of engineering uses cement in a large number, is unfavorable for environmental protection, and reinforced concrete structure seam is many, generally every 2 ~ 5 meters of seams, the sealing of seam is a difficult problem, and construction technical requirement is high, long construction period, in use be easy to cracking simultaneously, leak, maintenance cost is high.Wherein, for rectangular configuration pipeline, its both sides body of wall, except bearing except the load on top, also to bear the transverse load of side soil layer, and top plate directly bears dynamic loading and static load, but because only have employed common steel bar concrete technology, in order to resist torque and disturb song, strengthen its supporting capacity, prevent unstability, wall needs the very thick of setting, and expense is high.And common circular reinforcing bar concrete pipe, the backfill quality requirement of duct bottom key groove and both sides is high, arc in addition bottom pipe interior, not flat, be unfavorable for that bottom arranges pipe support and pipeline, also be unfavorable for the current of maintenance personal and maintenance of equipment, need to build platform bottom pipe interior.
Therefore, above-mentioned technical barrier urgently to be resolved hurrily.
Summary of the invention
Goal of the invention: the object of this invention is to provide and a kind ofly can improve the strong combined type arched conduit of high, the anti-vertical unstability ability of inner clear space utilization rate, torsional rigidity.
Technical scheme: a kind of combined type arched conduit of the present invention, comprise and form arch tube coupling by unit sheet bar is assembled, this arch tube coupling is assembled formation arched conduit vertically; Wherein, the outside of this unit sheet bar and/or the inner side hollow cavity structure that has cross-sectional perimeter closed.
Wherein, arch tube coupling is made up of both sides unit sheet bar and upper and lower unit sheet bar, and wherein, both sides unit sheet bar and upper unit sheet bar are arc-like sheet, and lower unit plate is flat or faces upward for shape; Or be made up of both sides unit sheet bar and upper unit sheet bar, it is arc-like sheet.
Wherein, unit sheet bar is made up of metal sheet, and this metal sheet can form hollow cavity structure by bent upon itself; Or metal sheet is bent to form convex shape, form hollow cavity structure by sheet material or tubing and this combination of protrusions.
Hollow cavity structure on adjacent described unit sheet bar is end to end, to form continuous print hollow cavity structure.
When arch tube coupling splices vertically, the contact end portion of adjacent cells plate has flanging or hollow cavity structure, and the contact surface of adjacent folds or hollow cavity structure is splicing joint face; Furtherly, above-mentioned flanging is folded to outside arch tube coupling.
Preferably, can in hollow cavity structure fill concrete, simultaneously can also set up reinforcing bar in hollow cavity structure.
Another kind of combined type arched conduit of the present invention, comprise and form arch tube coupling by unit sheet bar is assembled, this arch tube coupling is assembled formation arched conduit vertically; Wherein, this unit sheet bar is spliced by metal sheet and metal tube; Or be spliced side by side by metal tube, its cross section is a chain of structure; Or the unit sheet bar formed with hollow cavity is mutually fastened by corrugated sheet; Or fasten by C-type steel, channel-section steel, i iron, arc-shaped steel, angle steel or corrugated sheet and flat board the unit sheet bar formed with hollow cavity.
Same, when arch tube coupling splices vertically, the contact end portion of adjacent cells plate has metal tube or hollow cavity structure, and the contact surface of adjacent metal pipe or hollow cavity structure is splicing joint face.
Preferably, can in metal tube or hollow cavity structure fill concrete, simultaneously can also set up reinforcing bar in metal tube or hollow cavity structure.
Beneficial effect: compared with prior art, the present invention has following remarkable advantage: this pipeline is the domes with hollow cavity structure, improves torsional rigidity and anti-vertical unstability ability; Be flat face or inverted arch face bottom it, be convenient to current or wiring/pipeline; Concealed syndeton can be adopted between adjacent arcuate tube coupling, additionally not take pipeline space, practical and attractive etc.; The inside clear space utilization rate of arched conduit and current clear span and clear height are improved, and duct height is reduced, and the buried degree of depth, the foundation excavation degree of depth and engineering quantity are all reduced; This pipeline is flat face bottom it, is easy to build pipeline foundation, and most important when solving the backfill of circular cross-section pipeline is also the most difficult backfill construction of bottom wedged gap and the problem of degree of compaction simultaneously.
Accompanying drawing explanation
Fig. 1 (a)-1 (r) is the cross sectional representation of first kind hollow cavity structure of the present invention;
Fig. 2 (a)-2 (e) is the cross sectional representation of Equations of The Second Kind hollow cavity structure of the present invention;
The cross sectional representation that Fig. 3 (a), 3 (b) and 3 (c) are the present invention the 3rd class hollow cavity body structure;
Fig. 4 (a)-4 (e) is the cross sectional representation of the present invention the 4th class hollow cavity body structure;
Fig. 5 is the structural representation of lower unit plate of the present invention;
Fig. 6 is the structural representation of both sides of the present invention unit sheet bar;
Fig. 7 is the structural representation of unit sheet bar in the present invention;
Fig. 8 (a)-8 (c) is the cross sectional representation of adjacent arcuate tube coupling splicing construction of the present invention;
Fig. 9 (a)-9 (e) is for the present invention is with the structural representation of the arched conduit of base plate;
Figure 10 (a)-10 (d) is the structural representation of the arched conduit of the present invention not with base plate;
Figure 11 is the circulation schematic diagram of arched conduit filling concrete of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further.
The first combined type arched conduit 100 of the present invention, comprises and forms arch tube coupling 102 by unit sheet bar 101 is assembled; Preferably, this arch tube coupling 102 is made up of both sides unit sheet bar and upper and lower unit sheet bar, wherein, both sides unit sheet bar and upper unit sheet bar are arc-like sheet, its longitudinal section (length direction along hollow cavity structure 103) is arc, and lower unit plate i.e. base plate can be flat plate, as shown in Fig. 9 (a), 9 (e), also can be inverted arch shape, as shown in Fig. 9 (b), 9 (c), 9 (d); Certainly, arch tube coupling 102 also can not be with base plate, and be only made up of both sides unit sheet bar and upper unit sheet bar, it is arc-like sheet, as shown in Figure 10 (a)-10 (d); The length of single-unit tube coupling of the present invention can reach 10-15 rice, as long as traffic condition license, length can be longer, and whole like this pipeline joint-seam reduces, better tightness; By the arch tube coupling 102 assembled formation arched conduit 100 vertically obtained; Wherein, there is hollow cavity body structure 110 structure the outside of this unit sheet bar 101 and/or inner side, and the cross-sectional perimeter of this hollow cavity structure 110 closes.Preferably, cavity has certain length, two ends can through or one end close, one end open.The hollow cavity structure of this closed type cross section is than the hollow cavity structure of open type cross section, and higher, the anti-vertical unstability ability of torsional rigidity is stronger, and pipeline is domes in addition, and therefore, the vertical bearing capacity of pipeline is able to further reinforcement.Simultaneously, bottom due to arched conduit is flat face or inverted arch form, not needing to mat formation horizontal stand can directly as passage that is remarkable or car excessively, also base plate can not be laid when pipeline foundation bearing capacity is suitable, so be easy to build pipeline foundation, most importantly it solve the backfill construction of wedged gap and a difficult problem for degree of compaction bottom when circular cross-section pipeline backfills.In addition, the pipeline of domes, the utilization rate of its inner clear space is improved.
Above-mentioned hollow cavity structure 110 can be located in separately on unit sheet bar 101, as shown in Fig. 1 (a), 1 (b), 1 (o)-1 (r).
Wherein unit sheet bar is made up of metal sheet, hollow cavity structure 110 can be formed by this metal sheet bent upon itself, the shape of cross section of bending can be rectangle, circle etc., and the gap formed between hollow cavity structure 103 with unit sheet bar 101 is welded, as shown in Fig. 1 (c), 1 (d), 1 (e).Also protruding 103 shapes can be bent to form by metal sheet 106, hollow cavity structure 110 is combined to form by sheet material or tubing and this projection 103, as shown in Fig. 1 (f)-1 (n), wherein, the cavity geometry be bent to form can be grooved, arc, semicircle etc., and sheet material used can be steel plate, channel-section steel, C-type steel, curved plate etc.
Can to fill concrete 105 in hollow cavity structure 110 of the present invention, can first to hollow cavity structure 110 concrete perfusion 105 on unit sheet bar during filling, and then assembled; Or by end to end for the hollow cavity structure on adjacent cells plate, to form continuous print hollow cavity structure, assembled formation tube coupling overall perfusion again, the second reperfusion mode is shown in Figure 11, correspondingly offers filling concrete hole 111 and concrete overfolw hole 112 at tube coupling top.Wherein, reinforcing bar can be set up in hollow cavity structure 110 while fill concrete.Present invention utilizes concrete and/or the superior bearing capacity of reinforcing bar and steel pipe to concrete encapsulation, farthest can delay generation and the expansion of hollow cavity inside configuration distress in concrete, strengthen the vertical bearing capacity of pipeline further.
When described arch tube coupling 102 splices vertically, the contact end portion of adjacent cells plate 101 is bent to form flanging 104, preferably, this flanging 104 is folded to the outside of arch tube coupling 102, the collision of vehicle etc. and wall in pipeline can be reduced or scratch, the contact surface of adjacent folds 104 is splicing joint face, such as, flange bolt can be adopted to connect, as shown in Fig. 8 (b).Or the contact end portion of adjacent cells plate has hollow cavity structure 110, this hollow cavity structure 110 can be bent to form by unit sheet bar or weld separately on unit sheet bar, the contact surface of adjacent hollow cavity body structure 110 is splicing joint face, such as can offer bolt hole on this contact surface, and offer bolt handle hole 113 on another surface of hollow cavity structure near this bolt hole, instrument is stretched in hollow cavity structure 103 from bolt handle hole 113 and is used for fastening bolt, after bolt tightening, retrieving tool, use port lid 114 shutoff bolt handle hole 113 again, in case follow-up in hollow cavity structure during concrete perfusion, concrete overflows through bolt handle hole 113, connecting bolt like this is no longer exposed in pipeline, can not take up room, affect attractive in appearance, therefore concealed connection is called it as, as shown in Fig. 8 (c).Certainly, also the contact end portion of adjacent cells plate directly can be welded, as shown in Fig. 8 (a).
The second combined type arched conduit 100 of the present invention, comprise and form arch tube coupling 102 by unit sheet bar 101 is assembled, this arch tube coupling 102 is assembled formation arched conduit 100 vertically; Wherein, this unit sheet bar 101 is spliced, as shown in Fig. 2 (a)-2 (e) by metal sheet 106 and metal tube 107; Or be spliced side by side by metal tube 107, its cross section is a chain of structure, as shown in Fig. 3 (a), 3 (b), 3 (c); Or mutually fastened the unit sheet bar formed with hollow cavity structure 110 by corrugated sheet 108, as shown in Fig. 4 (a); Or fasten the unit sheet bar formed with hollow cavity structure 110, as shown in Fig. 4 (b) by C-type steel, channel-section steel, i iron, arc-shaped steel, angle steel or corrugated sheet 108 and dull and stereotyped 109.The sheet material be bent to form by straight sheet material above with shapes such as arc, ripple type, grooveds can increase the vertical bearing capacity of unit sheet bar.
When above-mentioned arch tube coupling 102 splices vertically, the contact end portion of adjacent cells plate 101 has metal tube 107 or hollow cavity structure 110, and the contact surface of adjacent metal pipe 107 or hollow cavity structure 110 is splicing joint face, such as can offer bolt hole on this contact surface, then adopt above-mentioned concealed connected mode.Same, can fill concrete 105 in metal tube 107 or hollow cavity 110 as required, or in described metal tube 107 or hollow cavity structure 110, reinforcing bar is set and fill concrete 105.
During said units plate 101 assembled formation arch tube coupling 102, connected by a pair flanged plate 115 between adjacent cells plate 101, as illustrated in figs. 5-7.Wherein, the end of each unit sheet bar 101 is equipped with a flanged plate 115, it can be such as welding, and concrete flow orifice 116 is opened on flanged plate 115, the shape of this concrete flow orifice 116 can be identical with the shape of cross section of hollow cavity structure 103, on flanged plate 115, open flange connecting hole 117, flange connecting hole 117 can be with bolts simultaneously.
Arched conduit of the present invention is half flexible structure, and anti-seismic performance is good, and anti-settling ability is strong, Absorbable rod micro-deformation, and not easy to crack; After fluid concrete, its supporting capacity is much larger than general reinforced concrete wall, and under the prerequisite ensureing some strength, thickness is thinning, greatly cost-saving.Arched conduit is easy to the adjustment realizing aspect ratio, to adapt to different floor height requirements.
Claims (10)
1. a combined type arched conduit, is characterized in that: comprise and form arch tube coupling (102) by unit sheet bar (101) is assembled, this arch tube coupling (102) is assembled formation arched conduit (100) vertically; Wherein, the outside of this unit sheet bar (101) and/or the inner side hollow cavity structure (110) that has cross-sectional perimeter closed.
2. combined type arched conduit according to claim 1, it is characterized in that: described arch tube coupling (102) is made up of both sides unit sheet bar and upper and lower unit sheet bar, wherein, both sides unit sheet bar and upper unit sheet bar are arc-like sheet, and lower unit plate is flat or faces upward for shape; Or be made up of both sides unit sheet bar and upper unit sheet bar, it is arc-like sheet.
3. combined type arched conduit according to claim 1, is characterized in that: described unit sheet bar is made up of metal sheet, and this metal sheet bent upon itself forms hollow cavity structure (110); Or metal sheet (106) is bent to form projection (103) shape, be combined to form hollow cavity structure (110) by sheet material or tubing and this projection (103).
4. combined type arched conduit according to claim 1, is characterized in that: the hollow cavity structure (110) on adjacent described unit sheet bar (101) is end to end.
5. combined type arched conduit according to claim 1 and 2, it is characterized in that: when described arch tube coupling (102) is spliced vertically, the contact end portion of adjacent cells plate (101) has flanging (104) or hollow cavity structure (110), and the contact surface of adjacent folds or hollow cavity structure is splicing joint face.
6. combined type arched conduit according to claim 5, is characterized in that: the flanging (104) of described unit sheet bar (101) end is folded to arch tube coupling (102) outside.
7. the combined type arched conduit according to claim 1,3 or 4, is characterized in that: fill concrete (105) in described hollow cavity structure (110); Or in described hollow cavity structure (110), reinforcing bar is set and fill concrete (105).
8. a combined type arched conduit, is characterized in that: comprise and form arch tube coupling (102) by unit sheet bar (101) is assembled, this arch tube coupling (102) is assembled formation arched conduit (100) vertically; Wherein, this unit sheet bar (101) is spliced by metal sheet (106) and metal tube (107); Or be spliced side by side by metal tube (107), its cross section is a chain of structure; Or the unit sheet bar formed with hollow cavity structure (110) is mutually fastened by corrugated sheet (108); Or fasten by C-type steel, channel-section steel, i iron, arc-shaped steel, angle steel or corrugated sheet (108) and dull and stereotyped (109) unit sheet bar formed with hollow cavity structure (110).
9. combined type arched conduit according to claim 8, it is characterized in that: when described arch tube coupling (102) is spliced vertically, the contact end portion of adjacent cells plate (101) has metal tube (107) or hollow cavity structure (110), and the contact surface of adjacent metal pipe (107) or hollow cavity structure (110) is splicing joint face.
10. combined type arched conduit according to claim 8, is characterized in that: described metal tube (107) or hollow cavity structure (110) interior fill concrete (105); Or in described metal tube (107) or hollow cavity structure (110), reinforcing bar is set and fill concrete (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963690.5A CN105401596B (en) | 2015-12-21 | 2015-12-21 | Combined type arched conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963690.5A CN105401596B (en) | 2015-12-21 | 2015-12-21 | Combined type arched conduit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105401596A true CN105401596A (en) | 2016-03-16 |
| CN105401596B CN105401596B (en) | 2017-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510963690.5A Active CN105401596B (en) | 2015-12-21 | 2015-12-21 | Combined type arched conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105401596B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090450A (en) * | 2016-08-09 | 2016-11-09 | 南京联众建设工程技术有限公司 | There is the box pipeline that circumferential obtuse angle connects |
| CN107190772A (en) * | 2017-06-27 | 2017-09-22 | 南京联众建设工程技术有限公司 | A kind of underground pipe gallery base configuration and its construction method |
| CN110521455A (en) * | 2019-09-20 | 2019-12-03 | 厦门绿世界温室工程技术有限公司 | A kind of greenhouse arch bar |
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2015
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090450A (en) * | 2016-08-09 | 2016-11-09 | 南京联众建设工程技术有限公司 | There is the box pipeline that circumferential obtuse angle connects |
| WO2018028087A1 (en) * | 2016-08-09 | 2018-02-15 | 南京联众建设工程技术有限公司 | Box-type pipeline with circumferential obtuse angle connection |
| JP2018530686A (en) * | 2016-08-09 | 2018-10-18 | 南京聯衆建設工程技術有限公司 | Box type pipeline |
| AU2016419240B2 (en) * | 2016-08-09 | 2019-06-06 | Nanjing Lianzhong Engineering Technology Co., Ltd | Box-type pipeline with circumferential obtuse angle connection |
| EP3434951A4 (en) * | 2016-08-09 | 2019-08-28 | Nanjing Lianzhong Construction Engineering Technology Co., Ltd. | Box-type pipeline with circumferential obtuse angle connection |
| CN107190772A (en) * | 2017-06-27 | 2017-09-22 | 南京联众建设工程技术有限公司 | A kind of underground pipe gallery base configuration and its construction method |
| CN110521455A (en) * | 2019-09-20 | 2019-12-03 | 厦门绿世界温室工程技术有限公司 | A kind of greenhouse arch bar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105401596B (en) | 2017-09-01 |
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Address after: 211215 Zhetang Town Industrial Park, Lishui District, Nanjing City, Jiangsu Province Patentee after: NANJING LIANZHONG ENGINEERING TECHNOLOGY Co.,Ltd. Address before: 211215 No. 331 Zhening East Road, Zhetang Industrial Concentration Zone, Lishui Economic Development Zone, Nanjing City, Jiangsu Province Patentee before: NANJING LIANZHONG CONSTRUCTION ENGINEERING TECHNOLOGY Co.,Ltd. |
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Denomination of invention: Combined arch pipe Effective date of registration: 20221026 Granted publication date: 20170901 Pledgee: Jiangsu SINOSURE technology microfinance Co.,Ltd. Pledgor: NANJING LIANZHONG ENGINEERING TECHNOLOGY Co.,Ltd. Registration number: Y2022980019563 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20170901 Pledgee: Jiangsu SINOSURE technology microfinance Co.,Ltd. Pledgor: NANJING LIANZHONG ENGINEERING TECHNOLOGY Co.,Ltd. Registration number: Y2022980019563 |