CN106836851A - Deep basal pit hanging-type construction stair and its construction method - Google Patents
Deep basal pit hanging-type construction stair and its construction method Download PDFInfo
- Publication number
- CN106836851A CN106836851A CN201611158065.4A CN201611158065A CN106836851A CN 106836851 A CN106836851 A CN 106836851A CN 201611158065 A CN201611158065 A CN 201611158065A CN 106836851 A CN106836851 A CN 106836851A
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- Prior art keywords
- bench
- stair
- basal pit
- deep basal
- type construction
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G27/00—Temporary arrangements for giving access from one level to another for men or vehicles, e.g. steps, ramps
Abstract
The invention provides a kind of deep basal pit hanging-type construction stair and its construction method, between twice armored concrete horizontal support, wherein, including：First bench, the second step and the 3rd bench, and the first bench, the second step and the 3rd bench join end to end, and is set into " Z " character form structure.The deep basal pit hanging-type construction stair that the present invention is provided are hung in support stair using the armored concrete horizontal support in deep-foundation pit engineering, can greatly expand the installation environment of construction stair, improve performance；In addition, stair can carry out piecewise spreading or dismounting according to engineering progress, change shortcoming greatly in place between Construction stage of Deep Excavation is met, with good conformability.
Description
Technical field
The invention belongs to building engineering construction field, it is related to a kind of construction stair, particularly a kind of deep basal pit suspension type is applied
Work stair and its construction method.
Background technology
In modern construction engineering, underground structure can be used as functional areas such as parking, equipment, people's air defense, traffic.With
The large-scale development of underground structure, substantial amounts of deep-foundation pit engineering continuously emerges.Construction of Deep Excavation Engineering be with the earthwork by
Layer excavates what is be done step-by-step, and construction period personnel, material need successively to enter underground.
Because deep foundation pit construction place variability is big, and it is to construct from top to bottom, the Stereotype stairway of factorial praluction makes
With limited.Personnel's typically uses accommodation stairway up and down, is formed by connecting by live scaffolding steel pipe, this stair simple structure,
But comfortableness, security is all poor.And, construction stair are typically all disposed within foundation ditch periphery, and deep basal pit is typically all first
Row central excavation region, stair are installed serious delayed.
In sum, it is necessary to design a kind of flexibility high, comfort level preferably, and safety coefficient construction stair higher.
The content of the invention
The purpose of the present invention is directed to existing technology and there is above mentioned problem, it is proposed that a kind of flexibility is high, comfort level compared with
It is good, and safety coefficient construction stair higher.
The purpose of the present invention can be realized by following technical proposal：A kind of deep basal pit hanging-type construction stair, positioned at two
Between road armored concrete horizontal support, wherein, including：First bench, the second step and the 3rd bench, and the first bench,
The second step and the 3rd bench join end to end, and are set into " Z " character form structure.
In a kind of above-mentioned deep basal pit hanging-type construction stair, the company between first bench and the second step
It is connected in and is detachably connected, the connection between the second step and the 3rd bench is to be detachably connected.
In a kind of above-mentioned deep basal pit hanging-type construction stair, the structure of first bench and the structure of the 3rd bench
It is identical, wherein, first bench is angularly disposed with the 3rd bench, and angle of inclination is identical, and the second step is
It is horizontally disposed.
In a kind of above-mentioned deep basal pit hanging-type construction stair, the deep basal pit hanging-type construction stair are also included at least
A piece support column, and support column is connected to the side of the second step.
In a kind of above-mentioned deep basal pit hanging-type construction stair, the deep basal pit hanging-type construction stair are also included at least
One support frame, and one end of support frame is connected with the second step, the other end of support frame is connected with support column.
In a kind of above-mentioned deep basal pit hanging-type construction stair, support frame as described above includes：
Base plate, is installed on the bottom of the second step；
Swash plate, one end is connected with base plate, and the other end is connected with support column,
Wherein, base plate, swash plate and support column constitute a triangle.
In a kind of above-mentioned deep basal pit hanging-type construction stair, along first bench, the second step and institute
The length direction for stating the 3rd bench sets accommodation rail, and accommodation rail is located at first bench, the second step respectively
And two sides of the 3rd bench.
In a kind of above-mentioned deep basal pit hanging-type construction stair, first bench includes：
Some bench beams, are parallel to each other angularly disposed, and on same inclined-plane；
Some pieces of pedals, are set along the length direction of bench beam, and pedal is detachably connected with bench beam, wherein, it is each
The tangent value of formed acute angle is equal with the slope of bench beam between block pedal and bench beam.
In a kind of above-mentioned deep basal pit hanging-type construction stair, the second step includes：
Some landing beams, and it is mutually horizontally disposed, and in same level；
Landing slab, is laid on landing beam, and is detachably connected with landing beam.
The present invention also provides a kind of construction method of deep basal pit hanging-type construction stair, and it includes：
Step one：According to foundation depth, the set location of armored concrete horizontal support, it is determined that the installation position of construction stair
Put, and pre-buried several fixing bolts on armored concrete horizontal support；
Step 2：Install support post, and support post upper and lower ends respectively with armored concrete horizontal support in
Pre-embedded bolt is connected；
Step 3：Installation is bolted between support frame, and support frame and support column；
Step 4：The second step is installed, the second step is installed on support frame by bolt；
Step 5：First bench is installed, and one end of the first bench is detachably connected with armored concrete horizontal support, the
The other end of one bench is detachably connected with one end of the second step；
Step 6：3rd bench is installed, and one end of the 3rd bench is detachably connected with armored concrete horizontal support, the
The other end of three bench is detachably connected with the other end of the second step；
Step 7：Accommodation rail is installed, accommodation rail is installed on the two ends of pedal and landing slab by bolt；
Step 8：Installation, construction stair are come into operation；
Step 9：According to project progress, stair are removed paragraph by paragraph from bottom to top, store standby.
Compared with prior art, beneficial effects of the present invention：
(1), the deep basal pit hanging-type construction stair that the present invention is provided are using the armored concrete level in deep-foundation pit engineering
Support, stair are hung in support, can greatly expand the installation environment of construction stair, improve performance；In addition, stair can
Piecewise spreading or dismounting are carried out according to engineering progress, change shortcoming greatly in place between Construction stage of Deep Excavation is met, with good
Conformability；
(2), the construction method of a kind of deep basal pit hanging-type construction stair that the present invention is provided, wherein the first bench, second
It is connected by screw bolts between bench and the 3rd bench and between bench and armored concrete horizontal support, its connected mode
Simply, firmly, replaceable and detachable convenient, and the building block of stair is also used for multiple times, it is easy to lay in.
Brief description of the drawings
Fig. 1 is a kind of facade structures schematic diagram of deep basal pit hanging-type construction stair of the invention.
Fig. 2 is a kind of planar structure schematic diagram of deep basal pit hanging-type construction stair of the invention.
Fig. 3 is support frame, the facade structures schematic diagram of half space in a preferred embodiment of the present invention.
In figure, 100, armored concrete horizontal support；200th, the first bench；210th, bench beam；220th, pedal；300th, second
Bench；310th, landing beam；320th, landing slab；400th, the 3rd bench；500th, support column；600th, support frame；610th, base plate；620th, tiltedly
Plate；700th, accommodation rail.
Specific embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As depicted in figs. 1 and 2, a kind of deep basal pit hanging-type construction stair that the present invention is provided, positioned at twice reinforced concrete
Between native horizontal support 100, wherein, including：First bench 200, the bench 400 of the second step 300 and the 3rd, and the first bench
200th, the bench 400 of the second step 300 and the 3rd joins end to end, and is set into " Z " character form structure.
The deep basal pit hanging-type construction stair that the present invention is provided are using the armored concrete horizontal support in deep-foundation pit engineering
100, stair are hung in support, the installation environment of construction stair can be greatly expanded, improve performance；In addition, stair can
Piecewise spreading or dismounting are carried out according to engineering progress, change shortcoming greatly in place between Construction stage of Deep Excavation is met, with good
Conformability.
Preferably, as depicted in figs. 1 and 2, the connection between the first bench 200 and the second step 300 is to be detachably connected,
Connection between the bench 400 of the second step 300 and the 3rd is to be detachably connected so that the first bench 200 and the second step 300 it
Between and the bench 400 of the second step 300 and the 3rd between not only connected each other but also separate；When the first bench 200, the second step
300 and the 3rd bench 400 be connected when being spliced, connected each other between three, structure is integral, when dismantling the first bench
200th, the second step 300 and during three bench 400, after removing the 3rd bench 400, the first bench 200 and the second step 300
Still can be used.
Preferably, as depicted in figs. 1 and 2, the structure of the first bench 200 is identical with the structure of the 3rd bench 400, wherein,
First bench 200 is angularly disposed with the 3rd bench 400, and the second step 300 is horizontally disposed, and the second step 300 is used as not
Breath platform.
Preferably, as depicted in figs. 1 and 2, the first bench 200 is identical with the angle of inclination of the 3rd bench 400, is easy to workman
It is more convenient in walking or transport process, in addition, identical angle of inclination also allows for the first bench 200 and the 3rd bench 400
Installation.
Preferably, as shown in Figure 1, Figure 2 and shown in Fig. 3, deep basal pit hanging-type construction stair also include at least one support column
500, and support column 500 is connected to the side of the second step 300, the vertical load of the stair that are used to construct, and keep stair of constructing
Horizontal direction stability.
Preferably, as shown in Figure 1, Figure 2 and shown in Fig. 3, the quantity of support column 500 is two, and is respectively symmetrically positioned at second
The two ends of bench 300, further improve the stability of construction stair.
Preferably, as shown in Figure 1, Figure 2 and shown in Fig. 3, support column 500 is made from I-steel, the deadweight of structure compared with
Gently, its usable floor area is larger, and intensity is higher.
Preferably, as shown in Figure 1, Figure 2 and shown in Fig. 3, deep basal pit hanging-type construction stair also include at least one support frame
600, and one end of support frame 600 is connected with the second step 300, the other end of support frame 600 is connected with support column 500, will apply
The load that work stair are born, by support frame 600, is transferred on support column 500, so as to mitigate the load-bearing of construction stair, carries
The security of height construction stair.
Preferably, as shown in Figure 1, Figure 2 and shown in Fig. 3, support frame 600 is made from I-steel, the deadweight of structure compared with
Gently, its usable floor area is larger, and intensity is higher.
Preferably, as shown in Figure 1, Figure 2 and shown in Fig. 3, support frame 600 includes：Base plate 610, is installed on the second step 300
Bottom；Swash plate 620, one end is connected with base plate 610, and the other end is connected with support column 500 so that base plate 610, swash plate 620 and
Support column 500 constitutes a triangle, so as to improve the endurance of the second step 300, and then improves the security of construction stair
And reliability.
Preferably, as shown in Figure 1, Figure 2 and shown in Fig. 3, along the first bench 200, the bench 400 of the second step 300 and the 3rd
Length direction accommodation rail 700 is set, and accommodation rail 700 is located at the first bench 200, the second step 300 and the respectively
Two sides of three bench 400, are used to protect stair both sides, prevent workmen from falling accidentally when stair are walked about, and improve construction
The security of stair.
Preferably, as shown in Figure 1, Figure 2 and shown in Fig. 3, accommodation rail 700 is made from square steel, and its casting technique can
It is made of hot rolling, forging or cold-drawn, intensity is high, good stability.
Preferably, as depicted in figs. 1 and 2, the first bench 200 includes：Some bench beams 210, be parallel to each other oblique setting
Put, and on same inclined-plane；Some pieces of pedals 220, are set along the length direction of bench beam 210, and pedal 220 and bench beam
210 are detachably connected, wherein, the tangent value of formed acute angle and bench beam between each piece of pedal 220 and bench beam 210
210 slope is equal.
Preferably, as depicted in figs. 1 and 2, bench beam 210 is made from square steel, used as the load-bearing structure of bench load
Part, its casting technique can be made of hot rolling, forging or cold-drawn, and intensity is high, good stability.
Preferably, as depicted in figs. 1 and 2, pedal 220 is made from steel plate, wherein, the length of pedal 220, width
And thickness is respectively 900mm, 280mm and 3mm.
Preferably, as depicted in figs. 1 and 2, the second step 300 includes：Some landing beams 310, and it is mutually horizontally disposed,
And in same level；Landing slab 320, is laid on landing beam 310, and is detachably connected with landing beam 310, used as applying
Half space of the workman person during transporting goods.
Preferably, as shown in Figure 1, Figure 2 and shown in Fig. 3, some landing beams 310 be located at landing slab 320 and base plate 610 it
Between, and be easy to using being detachably connected between landing beam 310 and landing slab 320 and between base plate 610 and landing beam 310
Install and change.
Preferably, as shown in Figure 1, Figure 2 and shown in Fig. 3, landing beam 310 is made from square steel, is carried as half space
The supporting member of lotus, its casting technique can be made of hot rolling, forging or cold-drawn, and intensity is high, good stability.
Preferably, as shown in Figure 1, Figure 2 and shown in Fig. 3, landing slab 320 is made from steel plate, wherein, landing slab 320
Length, width and thickness be respectively 1100mm, 900mm and 3mm.
The present invention also provides a kind of construction method of deep basal pit hanging-type construction stair, by taking certain deep-foundation pit engineering as an example, opens
Dig depth 17m, 20000 square metres of foundation ditch area.Three road armored concrete horizontal supports 100, workmen's lower channel are set
Using deep basal pit hanging-type construction stair, per 2 bench are set between twice armored concrete horizontal support 100,1 rest is flat
Platform.According to field partition, 4 groups of construction stair are set altogether.
According to construction number of staircases described above, its construction method comprises the following steps, wherein, with 2 bench of constructing
As a example by 1 half space：
Step one：According to foundation depth, the set location of armored concrete horizontal support 100, it is determined that the peace of construction stair
Holding position, and pre-buried several fixing bolts on armored concrete horizontal support 100；
Step 2：Install support post, and support post upper and lower ends respectively with armored concrete horizontal support 100 in
Pre-embedded bolt be connected；
Step 3：Installation is bolted between support frame 600, and support frame 600 and support column 500；
Step 4：The second step 300 is installed, the second step 300 is installed on support frame 600 by bolt；
Wherein, mounting platform beam 310 first, landing beam 310 is uniformly layed on support frame 600, and is connected by bolt
Connect；Then mounting platform plate 320, landing slab 320 is layed on landing beam 310, and be bolted；
Step 5：First bench 200 is installed, and one end of the first bench 200 is removable with armored concrete horizontal support 100
Connection is unloaded, the other end and one end of the second step 300 of the first bench 200 are detachably connected；
Wherein, of the bench beam 210 in the bench beam 210 in the first bench 200, and the first bench 200 is installed first
Hold and be connected with the bolt being embedded in armored concrete horizontal support 100, the other end of the bench beam 210 in the first bench 200
It is connected with the landing beam 310 of wherein side by bolt；Then pedal 220 in first bench 200 is installed, by bolt by one
Block block pedal 220 is installed on the bench beam 210 in the first bench 200 successively；
Step 6：3rd bench 400 is installed, and one end of the 3rd bench 400 is removable with armored concrete horizontal support 100
Connection is unloaded, the other end and the other end of the second step 300 of the 3rd bench 400 are detachably connected；
Wherein, the bench beam 210 in the 3rd bench 400 is installed first, and bench beam 210 in the 3rd bench 400 one
Hold and be connected with the bolt being embedded in armored concrete horizontal support 100, the other end of the bench beam 210 in the 3rd bench 400
It is connected with the landing beam 310 of opposite side by bolt；Then pedal 220 in 3rd bench 400 is installed, by bolt by one piece
Block pedal 220 is installed on the bench beam 210 in the 3rd bench 400 successively；
Step 7：Accommodation rail 700 is installed, accommodation rail 700 is installed on by pedal 220 and landing slab by bolt
320 two ends, are used to protect stair both sides, prevent workmen from being fallen accidentally when stair are walked about；
Step 8：Installation, construction stair are come into operation；
Step 9：According to project progress, stair are removed paragraph by paragraph from bottom to top, store standby.
The construction method of a kind of deep basal pit hanging-type construction stair that the present invention is provided, wherein first the 200, second ladder of bench
It is connected by screw bolts between the bench 400 of section 300 and the 3rd and between bench and armored concrete horizontal support 100, its
Connected mode is simple, firm, replaceable and detachable convenient, and the building block of stair is also used for multiple times, it is easy to lay in.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
Claims (10)
1. a kind of deep basal pit hanging-type construction stair, between twice armored concrete horizontal support, it is characterised in that bag
Include：First bench, the second step and the 3rd bench, and the first bench, the second step and the 3rd bench join end to end, into
" Z " character form structure is set.
2. a kind of deep basal pit hanging-type construction stair according to claim 1, it is characterised in that first bench and institute
The connection between the second step is stated to be detachably connected, the connection between the second step and the 3rd bench is detachable
Connection.
3. a kind of deep basal pit hanging-type construction stair according to claim 1, it is characterised in that the knot of first bench
Structure is identical with the structure of the 3rd bench, wherein, first bench and the 3rd bench are angularly disposed, and angle of inclination phase
Together, the second step is horizontally disposed.
4. a kind of deep basal pit hanging-type construction stair according to claim 1, it is characterised in that the deep basal pit suspension type
Construction stair also include at least one support column, and support column is connected to the side of the second step.
5. a kind of deep basal pit hanging-type construction stair according to claim 4, it is characterised in that the deep basal pit suspension type
Construction stair also include at least one support frame, and one end of support frame is connected with the second step, the other end of support frame
It is connected with support column.
6. a kind of deep basal pit hanging-type construction stair according to claim 5, it is characterised in that support frame as described above includes：
Base plate, is installed on the bottom of the second step；
Swash plate, one end is connected with base plate, and the other end is connected with support column,
Wherein, base plate, swash plate and support column constitute a triangle.
7. a kind of deep basal pit hanging-type construction stair according to claim 1, it is characterised in that along first bench,
The length direction of the second step and the 3rd bench sets accommodation rail, and accommodation rail is located at described first respectively
Two sides of bench, the second step and the 3rd bench.
8. a kind of deep basal pit hanging-type construction stair according to claim 1, it is characterised in that the first bench bag
Include：
Some bench beams, are parallel to each other angularly disposed, and on same inclined-plane；
Some pieces of pedals, are set along the length direction of bench beam, and pedal is detachably connected with bench beam, wherein, each piece is stepped on
The tangent value of formed acute angle is equal with the slope of bench beam between plate and bench beam.
9. a kind of deep basal pit hanging-type construction stair according to claim 1, it is characterised in that the second step bag
Include：
Some landing beams, and it is mutually horizontally disposed, and in same level；
Landing slab, is laid on landing beam, and is detachably connected with landing beam.
10. it is a kind of construct any deep basal pit hanging-type construction stair of claim 1 to 9 method, it is characterised in that bag
Include：
Step one：According to foundation depth, the set location of armored concrete horizontal support, it is determined that the installation site of stair of constructing,
And on armored concrete horizontal support pre-buried several fixing bolts；
Step 2：Install support post, and support post upper and lower ends respectively with armored concrete horizontal support in it is pre-buried
Bolt is connected；
Step 3：Installation is bolted between support frame, and support frame and support column；
Step 4：The second step is installed, the second step is installed on support frame by bolt；
Step 5：First bench is installed, and one end of the first bench is detachably connected with armored concrete horizontal support, the first ladder
The other end of section is detachably connected with one end of the second step；
Step 6：3rd bench is installed, and one end of the 3rd bench is detachably connected with armored concrete horizontal support, the 3rd ladder
The other end of section is detachably connected with the other end of the second step；
Step 7：Accommodation rail is installed, accommodation rail is installed on the two ends of pedal and landing slab by bolt；
Step 8：Installation, construction stair are come into operation；
Step 9：According to project progress, stair are removed paragraph by paragraph from bottom to top, store standby.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611158065.4A CN106836851A (en) | 2016-12-15 | 2016-12-15 | Deep basal pit hanging-type construction stair and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611158065.4A CN106836851A (en) | 2016-12-15 | 2016-12-15 | Deep basal pit hanging-type construction stair and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106836851A true CN106836851A (en) | 2017-06-13 |
Family
ID=59140385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611158065.4A Pending CN106836851A (en) | 2016-12-15 | 2016-12-15 | Deep basal pit hanging-type construction stair and its construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106836851A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108505764A (en) * | 2018-05-28 | 2018-09-07 | 山东新城建工股份有限公司 | A kind of construction of underground depth large-engineering is marked time bench channel and its construction method |
| CN110965808A (en) * | 2019-11-26 | 2020-04-07 | 上海二十冶建设有限公司 | Construction method of externally hung stair and packway of fabricated building |
| CN111608429A (en) * | 2020-05-06 | 2020-09-01 | 中国一冶集团有限公司 | Assembled ultra-deep foundation pit ramp system and construction method thereof |
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| JPH11229610A (en) * | 1998-02-13 | 1999-08-24 | Taisei Corp | Transportable stairs |
| CN204001822U (en) * | 2014-08-08 | 2014-12-10 | 中国建筑第四工程局有限公司 | A kind of steel pipe frame construction stair |
| CN204000932U (en) * | 2014-06-03 | 2014-12-10 | 天津市达森城交钢结构有限公司 | Lower channel in safety in a kind of deep foundation pit construction operation |
| CN204212450U (en) * | 2014-11-05 | 2015-03-18 | 中建一局集团第六建筑有限公司 | A kind of tool-type safe and convenient passage |
| CN204825915U (en) * | 2015-07-30 | 2015-12-02 | 中国建筑第六工程局有限公司 | A assembled cat ladder for in foundation ditch |
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- 2016-12-15 CN CN201611158065.4A patent/CN106836851A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11229610A (en) * | 1998-02-13 | 1999-08-24 | Taisei Corp | Transportable stairs |
| CN204000932U (en) * | 2014-06-03 | 2014-12-10 | 天津市达森城交钢结构有限公司 | Lower channel in safety in a kind of deep foundation pit construction operation |
| CN204001822U (en) * | 2014-08-08 | 2014-12-10 | 中国建筑第四工程局有限公司 | A kind of steel pipe frame construction stair |
| CN204212450U (en) * | 2014-11-05 | 2015-03-18 | 中建一局集团第六建筑有限公司 | A kind of tool-type safe and convenient passage |
| CN204825915U (en) * | 2015-07-30 | 2015-12-02 | 中国建筑第六工程局有限公司 | A assembled cat ladder for in foundation ditch |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108505764A (en) * | 2018-05-28 | 2018-09-07 | 山东新城建工股份有限公司 | A kind of construction of underground depth large-engineering is marked time bench channel and its construction method |
| CN110965808A (en) * | 2019-11-26 | 2020-04-07 | 上海二十冶建设有限公司 | Construction method of externally hung stair and packway of fabricated building |
| CN111608429A (en) * | 2020-05-06 | 2020-09-01 | 中国一冶集团有限公司 | Assembled ultra-deep foundation pit ramp system and construction method thereof |
| CN111608429B (en) * | 2020-05-06 | 2022-03-22 | 中国一冶集团有限公司 | Assembled ultra-deep foundation pit ramp system and construction method thereof |
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Address after: 315 800 Pearl River Road 429 Xindan Street, Beilun District, Ningbo City, Zhejiang Province Applicant after: Zhejiang 20 Smelter Construction Co.,Ltd. Address before: 315 800 Pearl River Road 429 Xindan Street, Beilun District, Ningbo City, Zhejiang Province Applicant before: NINGBO MCC 20 CONSTRUCTION Co.,Ltd. |
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Effective date of registration: 20190613 Address after: 315 800 Pearl River Road 429 Xindan Street, Beilun District, Ningbo City, Zhejiang Province Applicant after: Zhejiang 20 Smelter Construction Co.,Ltd. Applicant after: CHINA MCC20 GROUP Corp.,Ltd. Address before: 315 800 Pearl River Road 429 Xindan Street, Beilun District, Ningbo City, Zhejiang Province Applicant before: Zhejiang 20 Smelter Construction Co.,Ltd. |
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