CN205877407U - Staple bolt suitable for steel pipeline pushes up into construction work - Google Patents
Staple bolt suitable for steel pipeline pushes up into construction work Download PDFInfo
- Publication number
- CN205877407U CN205877407U CN201620835196.0U CN201620835196U CN205877407U CN 205877407 U CN205877407 U CN 205877407U CN 201620835196 U CN201620835196 U CN 201620835196U CN 205877407 U CN205877407 U CN 205877407U
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- plate
- wing
- anchor ear
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- hoop
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Abstract
The utility model provides a staple bolt suitable for steel pipeline pushes up into construction work, including upper tension board, lower tension board, a last pterygoid lamina, two last pterygoid laminas, next pterygoid lamina, two lower pterygoid laminas and mounting panel, the upper tension board with the lower tension board all is the semicircle ring -type, the both ends of upper tension board set up respectively a last pterygoid lamina with two last pterygoid laminas, the both ends of lower tension board set up respectively next pterygoid lamina with two lower pterygoid laminas, a last pterygoid lamina is connected next pterygoid lamina, two last pterygoid laminas are connected two pterygoid laminas make down the upper tension board with the outside at the pipeline can be embraced to closing the hoop to the lower tension board, the mounting panel is fixed the upper tension board or the surface of lower tension board. The utility model discloses a staple bolt suitable for steel pipeline pushes up into construction work, the anticorrosive coating that not only can prevent pipeline interface position is torn and is peeled off, still is used for installing the mounting panel of slip casting pipeline in the surface setting of staple bolt, solves because the unable trompil of steel pipe pipe shaft lead to the fact the difficult problem of drag reduction mud slip casting pipe installation.
Description
Technical field
This utility model relates to pipeline engineering technical field, particularly relates to a kind of steel conduit jacking construction engineering of being applicable to
Anchor ear.
Background technology
In municipal water supply, draining, Zhong Shui, gas pipeline engineering, steel conduit jacking is more crucial in engineering one
Operation, this operation directly affects straight top steel pipe installation effect in push pipe well and service life.
Generally, the external anti-corrosion layer at pipe joint position is connected near pipeline opening with pipe shaft anticorrosive coat, preventing of this junction
Rotten layer is anticorrosion weak part, even there is certain mass defect.After steel pipe jacking, due to unavoidable between pipeline and the soil body
Friction occurs, it is likely that cause the tear of pipe joint position anticorrosive coat to peel off.
Further, due to narrow space in push pipe well, above-mentioned damage is difficult to detect in time and field repair.And over time
Passage, the trickle damage of anticorrosive coat easily causes the anticorrosion structure at pipe joint position and thoroughly destroys, the serious curtailment pipeline later stage
Service life, and cause bigger harm to operation security.
It addition, along with the jacking of pipeline, need to arrange anti-drag mud Grouting Pipe to reduce frictional force in jack-in process
Road.But, well inner wall space cannot provide accurate location to install grouting pipe, and pipeline itself also cannot perforate or offer folder
Tool, thus anti-drag mud grouting pipe can not be laid smoothly.
Utility model content
The purpose of this utility model is to provide a kind of anchor ear being applicable to steel conduit jacking construction engineering, existing to solve
The problem of anti-drag mud Grouting Pipe installation difficulty in the antiseptic effect difference of the anchor ear existence in technology and pipeline.
To achieve these goals, this utility model is by the following technical solutions:
This utility model provide a kind of anchor ear being applicable to steel conduit jacking construction engineering, including upper hoop plate, lower hoop plate,
A upper wing plate, upper two wing plates, next wing plate, lower two wing plates and installing plate；Described upper hoop plate and described lower hoop plate are all in semicircular ring
Shape, the two ends of described upper hoop plate are respectively provided with a described upper wing plate and described upper two wing plates；The two ends of described lower hoop plate set respectively
Put next wing plate described and described lower two wing plates；A described upper wing plate connects next wing plate described, and described upper two wing plates connect institute
State down two wing plates, enable described upper hoop plate and the described lower involutory hoop of hoop plate to embrace the outside at pipeline；Described installing plate is fixed on
Described upper hoop plate or the outer surface of described lower hoop plate.
Preferably, the material of described upper hoop plate and/or described lower hoop plate is Q235B mild steel.The technology of this technical scheme
Effect is: Q235B structural section has certain percentage elongation and bigger intensity, good toughness and castability, it is easy to punching press
And welding, it is widely used in the manufacture of common mechanical part, building, science of bridge building are improved quality and required higher welding structural element.And
And it is this steel technology maturation, with low cost.
Preferably, the thickness of described upper hoop plate and/or described lower hoop plate is 2～6 millimeters.The technique effect of this technical scheme
It is: excessive hoop plate thickness not only increases the quality of hoop plate, and increases the radial dimension of push pipe；And too small hoop plate
Thickness, then cause binding round plate intensity deficiency, shorten the service life of hoop plate.Wherein, the Q235B shape steel plate system of 4 millimeters thick is selected
The hoop plate made is the most suitable gauge.
Further, a described upper wing plate, described upper two wing plates, next wing plate described and described lower two wing plates are angle steel；Institute
State a wing plate and described upper two wing plates are welded on the lateral wall at described upper hoop plate two ends, next wing plate described and described lower two wings
Plate is welded on the lateral wall at described lower hoop plate two ends.This technical scheme have the technical effect that angle steel is commonly called as angle bar, be that both sides are mutual
Perpendicular tabular steel.One side of angle steel is welded and fixed with the lateral wall of hoop plate, and another side is then natural to extension
Stretch formation wing plate；A upper wing plate and next wing plate can corresponding laminating be fixing, upper two wing plates and lower two wing plates can correspondence be fitted
Fixing.
Preferably, the specification of described angle steel is 70x70x8.The angle steel having the technical effect that 70x70x8 of this technical scheme
For equal leg angle, its length of side is 70 millimeters, and thickness is 8 millimeters, and the angle steel with adequate thickness welds with hoop plate, it is ensured that anchor ear
Structural strength, and angle steel is not easy to be deformed in welding process and bend；And the length of side of 70 millimeters so that wing plate has
There are enough joint faces.
Further, it is adaptable to the anchor ear of steel conduit jacking construction engineering also includes that bolt and screw, described screw are arranged at
A described upper wing plate, described upper two wing plates, next wing plate described and described lower two wing plates；A described upper wing plate passes through described bolt
Connecting described upper two wing plates with described screw, next wing plate described connects described lower two wings by described bolt and described screw
Plate.Having the technical effect that of this technical scheme utilizes bolt and the screw being arranged on wing plate to install anchor ear, it is possible to anchor ear
Clamping degree is adjusted, and is easily installed and dismantles.
Preferably, described bolt is M20 high-strength bolt.This technical scheme have the technical effect that high-strength bolt is the most high-strength
The bolt of degree, belongs to a kind of standard component, and the plain bolt of the load ratio same specification that can bear wants big.One of high-strength bolt very
Important feature limits exactly and is intended for single use, and is generally used for permanently connected, forbids to reuse.Therefore use embracing of high-strength bolt connection
Bind round and connect more particularly suitable for down-hole pipe, once mounting, fix for a long time.
Preferably, the thickness of described installing plate is 5～15 millimeters.This technical scheme have the technical effect that installing plate is used
In fixing grouting pipe, and there is the situations such as vibrations, shake in grouting pipe at work, installs fixing effect to play,
Installing plate needs possess certain throat thickness, simultaneously in order to protect the welding heat damage to anticorrosive coat, therefore by installing plate
Thickness is designed as 5～15 millimeters.Specifically, could be arranged to 10 millimeters.
Further, it is adaptable to the anchor ear of steel conduit jacking construction engineering also includes that anticorrosive coat, described anticorrosive coat are arranged on institute
State hoop plate and the inner ring surface of described lower hoop plate.Having the technical effect that due to pipeline particularly pipe joint of this technical scheme
The lateral wall at place is provided with anticorrosive coat, and the inner ring surface at anchor ear arranges overcoat, it is possible to pipeline anticorrosion coating plays the work of protection
With, extend pipeline and the service life of anchor ear.
Further, described anticorrosive coat is the rubber blanket of 1～2 millimeters thick.This technical scheme have the technical effect that rubber blanket
There is elasticity, use the rubber blanket overcoat of 1～2 millimeters thick can realize the protection to anticorrosive coat.
The beneficial effects of the utility model are: upper anchor ear and lower anchor ear bind round involutoryly and embrace outside pipeline, it is possible to prevent pipe
The anticorrosive coat tear at pipeline joint position is peeled off, and is provided for installing the installing plate of grouting pipe at the outer surface of anchor ear, solves
Owing to steel pipe pipe shaft cannot the perforate problem that causes anti-drag mud Grouting Pipe installation difficulty.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model detailed description of the invention, below will be to detailed description of the invention
In description, the required accompanying drawing used is briefly described.It should be evident that the accompanying drawing in describing below is of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
These accompanying drawings obtain other accompanying drawing.
The structural representation of the anchor ear being applicable to steel conduit jacking construction engineering that Fig. 1 provides for this utility model；
Fig. 2 for this utility model provide be applicable to steel conduit jacking construction engineering anchor ear install after structural representation
Figure.
Reference:
Plate is bound round on 1-；Plate is bound round under 2-；The upper wing plate of 3-；
Upper two wing plates of 4-；Next wing plate of 5-；Two wing plate under 6-；
7-installing plate；8-bolt；9-screw；
10-overcoat；11-pipeline.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described
Embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, this
The every other embodiment that field those of ordinary skill is obtained under not making creative work premise, broadly falls into this practicality
Novel protected scope.
In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term
Directly ", " level ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, be only
Must have specific for the ease of describing this utility model and simplification description rather than instruction or the device of hint indication or element
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Language concrete meaning in this utility model.
Present embodiments provide a kind of anchor ear being applicable to steel conduit jacking construction engineering, wherein: Fig. 1 is this utility model
The structural representation of the anchor ear being applicable to steel conduit jacking construction engineering provided；Fig. 2 is being applicable to that this utility model provides
Structural representation after the anchor ear installation of steel conduit jacking construction engineering.As shown in Figure 1, it is adaptable to steel conduit jacking construction engineering
The primary structure of anchor ear include hoop plate 1, lower hoop plate 2, a upper wing plate 3, upper two wing plates 4, next wing plate 5, lower two wing plate 6 and
Installing plate 7.Specifically, upper hoop plate 1 and lower hoop plate 2 are all in semi-annular shape, and the two ends of upper hoop plate 1 are fixedly installed a wing respectively
Plate 3 and upper two wing plates 4, the two ends of lower hoop plate 2 are fixedly installed next wing plate 5 and lower two wing plates 6 respectively；When a upper wing plate 3 connects
Connecing next wing plate 5, when upper two wing plates 4 connect lower two wing plate 6, upper hoop plate 1 and lower hoop plate 2 can be embraced outside pipeline 11 by involutory hoop
Side.Further, installing plate 7 is fixedly mounted on hoop plate 1 or the outer surface of lower hoop plate 2.
Conventionally, as the external anti-corrosion layer at pipeline 11 interface position connects near 11 mouthfuls of pipeline with pipe shaft anticorrosive coat
Connecing, the anticorrosive coat of this junction is anticorrosion weak part, even there is certain mass defect.After pipeline 11 enters hole, due to
Friction occurs unavoidably, it is likely that cause the tear of pipeline 11 interface position anticorrosive coat to peel off between pipeline 11 and the soil body.Further, by
Narrow space in well, above-mentioned damage is difficult to detect in time and field repair.And As time goes on, the trickle damage of anticorrosive coat
Wound easily causes the anticorrosion structure at pipeline 11 interface position and thoroughly destroys, the service life in serious curtailment pipeline 11 later stage, and gives
Operation security causes bigger harm.It addition, stretching into along with pipeline 11, simultaneously need to anti-drag mud Grouting Pipe is set for down-hole
Road.But, well inner wall space cannot provide accurate location to install grouting pipe, and pipeline 11 itself also cannot perforate or offer
Fixture, thus anti-drag mud grouting pipe can not be laid smoothly.
The anchor ear being applicable to steel conduit jacking construction engineering in the present embodiment, embraces involutory to upper anchor ear and lower anchor ear hoop
Outside pipeline 11, it is possible to preventing the anticorrosive coat tear at pipeline 11 interface position from peeling off, meanwhile, the outer surface at anchor ear arranges use
In installing the installing plate 7 of grouting pipe, solve due to steel pipe pipe shaft cannot perforate, cannot fixture be set and the drag reduction mud that causes
The problem of slurry Grouting Pipe installation difficulty.
In the alternative of the present embodiment, it is preferable that above the material of hoop plate 1 and/or lower hoop plate 2 is Q235B mild steel.
Wherein, upper hoop plate 1 and lower hoop plate 2 can also make cylinder iron, the other materials such as aluminium alloy even plastics.In the present embodiment, by
In Q235B structural section there is certain percentage elongation and bigger intensity, and good toughness and castability, it is easy to punching press and weldering
Connect, be widely used in the manufacture of common mechanical part, building, science of bridge building are improved quality and required higher welding structural element.And should
Steel technology maturation, with low cost, to improving engineering efficiency, reduce material cost and there is certain help.
In the alternative of the present embodiment, as shown in Figure 2, it is preferable that above the thickness of hoop plate 1 and/or lower hoop plate 2 is 2
～6 millimeters.In the present embodiment, excessive hoop plate thickness not only increases the quality of hoop plate, and increases top well conduit 11
Radial dimension；And too small hoop plate thickness, then cause binding round plate intensity deficiency, shorten the service life of hoop plate.For unification
Standard and beneficially processing and fabricating, the hoop plate selecting the Q235B shape steel plate of 4 millimeters thick to make is the most suitable hoop component.
In the alternative of the present embodiment, as it is shown in figure 1, further, a upper wing plate 3, upper two wing plates 4, next wing
Plate 5 and lower two wing plates 6 are angle steel；A upper wing plate 3 and upper two wing plates 4 are welded on the lateral wall at hoop plate 1 two ends, next wing plate 5
With the lateral wall that lower two wing plates 6 are welded on lower hoop plate 2 two ends.Wherein, aforementioned four wing plate can also use strip-shaped steel plate or
Directly use welding rod.Angle steel is commonly called as angle bar, is both sides mutually perpendicular tabular steel.In the present embodiment, a side of angle steel
The lateral wall of limit and hoop plate is welded and fixed, and another side stretches out formation wing plate the most naturally；Upper wing plate 3 and next wing plate
5 can corresponding laminating be fixing, upper two wing plates 4 and lower two wing plates 6 can be fixed in corresponding laminating.
In the alternative of the present embodiment, as illustrated in fig. 1, it is preferred that the specification of described angle steel is 70x70x8.Wherein,
The angle steel of 70x70x8 is equal leg angle, and its length of side is 70 millimeters, and thickness is 8 millimeters, has angle steel and the hoop plate weldering of adequate thickness
Connect, it is ensured that the structural strength of anchor ear, and angle steel is not easy to be deformed in welding process and bend；And the limit of 70 millimeters
Long so that upper and lower interconnective wing plate has enough joint faces.
In the alternative of the present embodiment, as it is shown in figure 1, further, it is adaptable to steel conduit jacking construction engineering
Anchor ear also includes bolt 8 and screw 9, and screw 9 is arranged at a wing plate 3, upper two wing plates 4, next wing plate 5 and lower two wing plates 6；On
One wing plate 3 connects upper two wing plates 4 by bolt 8 and screw 9, and next wing plate 5 connects lower two wing plates 6 by bolt 8 and screw 9.
Wherein, between a upper wing plate 3 and next wing plate 5, between upper two wing plates 4 and lower two wing plates 6, welding, clamping, button can also be used
The connected modes such as conjunction.In the present embodiment, utilize bolt 8 and the screw 9 being arranged on wing plate that anchor ear is installed, it is possible to anchor ear
Clamping degree is adjusted, and is easily installed and dismantles.
In the alternative of the present embodiment, as illustrated in fig. 1, it is preferred that bolt 8 is M20 high-strength bolt 8.Wherein, bolt
8 can also use common Steel Bolt 8, it is also possible to select the bolt 8 of other diameter specifications.In the present embodiment, high-strength spiral shell
The bolt 8 of the i.e. high intensity of bolt 8, belongs to a kind of standard component, and the plain bolt 8 of the load ratio same specification that can bear wants big.High-strength spiral shell
One very important feature of bolt 8 limits exactly and is intended for single use, and is generally used for permanently connected, forbids to reuse.Therefore use height
The anchor ear that strength bolt 8 connects connects more particularly suitable for down-hole pipe 11, and once mounting is fixed for a long time.
In the alternative of the present embodiment, as illustrated in fig. 1, it is preferred that the thickness of installing plate 7 is 5～15 millimeters.At this
In embodiment, installing plate 7 is used for fixing grouting pipe, and grouting pipe exists the situations such as vibrations, shake at work, in order to rise
To installing fixing effect, installing plate 7 needs possess certain throat thickness, simultaneously in order to protect welding heat to anticorrosive coat
Damage, therefore the thickness of installing plate 7 is designed as 5～15 millimeters.Specifically, could be arranged to 10 millimeters.
In the alternative of the present embodiment, as it is shown in figure 1, further, it is adaptable to steel conduit jacking construction engineering
Anchor ear also includes anticorrosive coat, and anticorrosive coat is arranged on hoop plate 1 and the inner ring surface of lower hoop plate 2.In the present embodiment, due to pipeline 11
The particularly lateral wall of pipeline 11 seam is provided with anticorrosive coat, and the inner ring surface at anchor ear arranges overcoat 10, it is possible to pipeline
11 anticorrosive coats play the effect of protection, extend pipeline 11 and the service life of anchor ear.
In the alternative of the present embodiment, as it is shown in figure 1, further, anticorrosive coat is the rubber blanket of 1～2 millimeters thick.
In the present embodiment, rubber blanket has elasticity, uses the rubber blanket overcoat 10 of 1～2 millimeters thick can realize anticorrosive coat
Protection.
In sum, it is adaptable to the anchor ear of steel conduit jacking construction engineering, involutory to upper anchor ear and lower anchor ear hoop is embraced
Outside pipeline 11, by upper anchor ear and the rubber blanket of lower anchor ear inner ring surface, it is possible to prevent the anticorrosive coat at pipeline 11 interface position from tearing
Split stripping, meanwhile, the outer surface at anchor ear be provided for install grouting pipe installing plate 7, solve due to steel pipe pipe shaft without
Method perforate, cannot fixture be set and the problem of anti-drag mud Grouting Pipe installation difficulty that causes.
Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, rather than it is limited
System；Although being described in detail this utility model with reference to foregoing embodiments, those of ordinary skill in the art should
Understand: the technical scheme described in foregoing embodiments still can be modified by it, or to the most some or all of
Technical characteristic carries out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from this practicality new
The scope of type each embodiment technical scheme.
Claims (10)
1. the anchor ear being applicable to steel conduit jacking construction engineering, it is characterised in that include hoop plate, lower hoop plate, a upper wing
Plate, upper two wing plates, next wing plate, lower two wing plates and installing plate；
Described upper hoop plate and described lower hoop plate all in semi-annular shape, the two ends of described upper hoop plate be respectively provided with a described upper wing plate and
Described upper two wing plates；The two ends of described lower hoop plate are respectively provided with next wing plate described and described lower two wing plates；
A described upper wing plate connects next wing plate described, and described upper two wing plates connect described lower two wing plates, make described upper hoop plate with
Described lower hoop plate can embrace the outside at pipeline by involutory hoop；
Described installing plate is fixed on described upper hoop plate or the outer surface of described lower hoop plate.
The anchor ear being applicable to steel conduit jacking construction engineering the most according to claim 1, it is characterised in that described upper hoop plate
And/or the material of described lower hoop plate is Q235B mild steel.
The anchor ear being applicable to steel conduit jacking construction engineering the most according to claim 2, it is characterised in that described upper hoop plate
And/or the thickness of described lower hoop plate is 2～6 millimeters.
The anchor ear being applicable to steel conduit jacking construction engineering the most according to claim 1, it is characterised in that a described upper wing
Plate, described upper two wing plates, next wing plate described and described lower two wing plates are angle steel；A described upper wing plate and described upper two wing plate welderings
It is connected on the lateral wall at described upper hoop plate two ends, next wing plate described and described lower two wing plates to be welded on outside described lower hoop plate two ends
Sidewall.
The anchor ear being applicable to steel conduit jacking construction engineering the most according to claim 4, it is characterised in that described angle steel
Specification is 70x70x8.
The anchor ear being applicable to steel conduit jacking construction engineering the most according to claim 1, it is characterised in that also include bolt
And screw, described screw is arranged at a described upper wing plate, described upper two wing plates, next wing plate described and described lower two wing plates；Institute
Stating a wing plate and connect described upper two wing plates by described bolt and described screw, next wing plate described passes through described bolt and institute
State screw and connect described lower two wing plates.
The anchor ear being applicable to steel conduit jacking construction engineering the most according to claim 6, it is characterised in that described bolt is
M20 high-strength bolt.
8. according to the anchor ear being applicable to steel conduit jacking construction engineering described in any one of claim 1～7, it is characterised in that
The thickness of described installing plate is 5～15 millimeters.
9. according to the anchor ear being applicable to steel conduit jacking construction engineering described in any one of claim 1～7, it is characterised in that
Also include that overcoat, described overcoat are arranged on described upper hoop plate and the inner ring surface of described lower hoop plate.
The anchor ear being applicable to steel conduit jacking construction engineering the most according to claim 9, it is characterised in that described protection
Layer is the rubber blanket of 1～2 millimeters thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620835196.0U CN205877407U (en) | 2016-08-03 | 2016-08-03 | Staple bolt suitable for steel pipeline pushes up into construction work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620835196.0U CN205877407U (en) | 2016-08-03 | 2016-08-03 | Staple bolt suitable for steel pipeline pushes up into construction work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205877407U true CN205877407U (en) | 2017-01-11 |
Family
ID=57701823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620835196.0U Expired - Fee Related CN205877407U (en) | 2016-08-03 | 2016-08-03 | Staple bolt suitable for steel pipeline pushes up into construction work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205877407U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515579A (en) * | 2020-03-27 | 2020-08-11 | 铜陵市弘润机电有限责任公司 | Slip casting pipe convenient to assembly welding |
| CN113152594A (en) * | 2021-04-29 | 2021-07-23 | 中建八局发展建设有限公司 | Turnover assembly type pipeline module for fire fighting permanent-temporary combination technology and construction method |
-
2016
- 2016-08-03 CN CN201620835196.0U patent/CN205877407U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515579A (en) * | 2020-03-27 | 2020-08-11 | 铜陵市弘润机电有限责任公司 | Slip casting pipe convenient to assembly welding |
| CN111515579B (en) * | 2020-03-27 | 2022-05-10 | 铜陵市弘润机电有限责任公司 | Slip casting pipe convenient to assembly welding |
| CN113152594A (en) * | 2021-04-29 | 2021-07-23 | 中建八局发展建设有限公司 | Turnover assembly type pipeline module for fire fighting permanent-temporary combination technology and construction method |
| CN113152594B (en) * | 2021-04-29 | 2022-11-04 | 中建八局发展建设有限公司 | Construction method of rotatable assembly type pipeline module for fire fighting permanent-temporary combination technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20170803 |