CN105926852A - H-shaped steel structural column provided with base for dwelling houses and alloy material for manufacturing same - Google Patents
H-shaped steel structural column provided with base for dwelling houses and alloy material for manufacturing same Download PDFInfo
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- CN105926852A CN105926852A CN201610239357.4A CN201610239357A CN105926852A CN 105926852 A CN105926852 A CN 105926852A CN 201610239357 A CN201610239357 A CN 201610239357A CN 105926852 A CN105926852 A CN 105926852A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
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- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses an H-shaped steel structural column provided with a base for dwelling houses. The H-shaped steel structural column comprises a base and an H-shaped steel body. The steel body comprises a substrate, a left plate and a right plate are formed on the lateral ends of two sides of the substrate; two symmetric holes are arranged in the left plate and right plate respectively, a connection reinforcing plate is arranged between the left plate/right plate and the base; an air hole is formed between the connection reinforcing plate and the base/the steel body; an oblique plate is arranged between the substrate and the base, a groove is formed between the oblique plate and the base, and two ends of the groove are opposite to the air holes respectively. The invention also discloses an alloy material for manufacturing the steel structure. The provided steel structural column can solve the shortages of prior art, the overall structural strength is increased according to the actual needs, a uniform reinforcing strength is formed, the service life is prolonged, and at the same time, the anticorrosion performance is enhanced.
Description
Technical field
The present invention relates to long strands field, especially relate to a kind of drum steel of band base on house
Structural column；The invention still further relates to a kind of for manufacturing the alloy of the drum steel structure column of band base on house
Material.
Background technology
Steel construction development in recent years is rapid, and steel construction has many good qualities, compared with other construction, in use,
Design, construction and mixed economy aspect all have advantage, and cost is low, can move at any time.It is in particular in:
Steel house can better meet the requirement of architectural large bay flexible isolation than traditional architecture, and can pass through
Reducing the area of section of post and use Light trabs, improving area utilization rate, indoor effective usable floor area improves
About 6%.Good energy-conserving effect, body of wall uses the standardized C-type steel of light energy-saving, square steel, battenboard, protects
Warm nature can be good, and seismic degree is good, and energy-conservation 50%.Steel structure system is used for residential housing and can give full play to steel knot
The ductility of structure, its plastic deformation ability are strong, have excellent seismic wind resistance, substantially increase house
Security reliability.Especially meeting with in the case of earthquake, typhoon disaster, steel construction is it can be avoided that building
Collapsing property is destroyed.Building lower overall weight, system of steel residential structure from the half of heavy and light, about xoncrete structure,
Foundation cost can be greatly reduced.The suitable factory mass of steel construction produces, and industrialization degree is high, and energy
By advanced for energy-conservation, waterproof, heat insulation, door and window etc. finished product collection together in one, complete application, will design, produce,
Construction integrated, improve the level of construction industry.Construction would generally use armored concrete, steel construction with
Ordinary reinforced concrete structure is compared, and it is homogeneous, high-strength, speed of application is fast, shock resistance is good and the response rate high
Deng superiority, steel to exceed a lot of times than masonry and the intensity of concrete and elastic modelling quantity, therefore identical at load
Under the conditions of, the light weight of steel beam column.From the perspective of destroyed, steel construction is to have moderate finite deformation omen in advance,
Belong to ductile fracture structure, it is possible to find danger in advance, thus avoid；Therefore, present Factory Building is adopted mostly
Complete with steel construction.Steel construction in the middle of Factory Building can use connector in a large number, and connector is by steel construction
Major and minor beam organically link together, it is ensured that whole Factory Building horizontal span has good support.
But existing steel construction is in actual application, the insufficient strength of steel construction entirety is firm, overall
Comparing the thinest on supporting, especially when bearing excessive pressure or impulsive force, overall steel construction is not
It is beneficial to market long-term needs, does not the most also have corresponding steel construction product to occur.The most existing steel
Body structure surface easily corrodes, and easily piles up the globule during life-time service, increases corrosion, and then causes steel to be tied
Structure is greatly shortened on service life, affects actual practical function.
Additionally there is no a kind of suitably manufacture of steel structure material on market, need to improve invention.
To this end, the applicant proposes improvement with regard to this, solve weak point present in existing steel construction, with
Meet the demand of existing market, beneficially long-run development.
Summary of the invention
It is an object of the invention to provide a kind of drum steel structure column of band base on house, can solve existing
There is the deficiency in technology, it is possible in place of solving the deficiencies in the prior art, carry out rational layout setting,
Increase the structural strength of entirety according to different actual needs, form equally distributed reinforcement dynamics, extend
Overall service life；Increase Corrosion Protection simultaneously, improve overall serviceability.
The drum steel structure column of band base on house, including base and i shaped steel body, described steel body bag
Including substrate, the both sides side at described substrate forms left plate and right panel, described substrate, left plate, right panel respectively
It is formed in one, it is characterised in that: on described left plate, described right panel, form symmetrically arranged perforate, institute
It is multiple for stating perforate, presents inferior being spaced；Set between described base and described left plate, described right panel
There is connection reinforcement plate, between described connection reinforcement plate and described base, described steel body, form air holes；Described
It is provided with swash plate between substrate and described base, between described swash plate and described base, forms groove, described groove
Two ends be respectively toward to the air holes of both sides.
The present invention does setting further, and the corner of described steel body is provided with arc, and described arc is for inclining
Arranging obliquely, its angle of inclination is 15-30 degree.Such structure is arranged, it is simply that in order to well strengthen angle
Fall the structural strength at place, it is to avoid the stress at this position is thin and the most impaired.Be inclined upwardly is in order to more simultaneously
Good draining etc., reduces depositing of water, especially dew.
The present invention does setting further, and the corner at described arc is provided with water falling hole.
The present invention does setting further, and the outer surface at described steel body is provided with corrosion-resistant coating, described anticorrosion
The thickness of layer is 1-3mm.Corrosion-resistant coating in the present invention is by air brushing operation.
The present invention is done setting further, also includes the first connecting plate and the second connecting plate.
The present invention does setting further, and described first connecting plate includes the first plate body, at described first plate body
Two side ends form symmetrically arranged bearing pin, described first plate body is provided with multiple hole；Described bearing pin position
At the both sides side angle of described first plate body, the side at described first plate body forms graphite limit, described graphite
Limit is relative with described bearing pin.Why the present invention arranges graphite limit, it is possible to formed well and between substrate
Connection, and will not corrosion, simultaneously also without spot welding operation will buckle, improve
The structural strength of steel body.
The present invention does setting further, and described second connecting plate includes the second plate body, described second plate body
Forming symmetrically arranged pin rod group on the side of both sides, described pin rod group includes multiple pin rod arranged at equal intervals,
Draw-in groove not of uniform size is formed respectively in the both sides up and down of described second plate body.Draw-in groove in the present invention is arranged,
It is the splicing in order to different steel can be carried out, the bonding strength each other of entirety can be improved.
Compared with prior art, the present invention has a following beneficial effect:
The present invention forms symmetrically arranged perforate on described left plate, described right panel, and described perforate is multiple,
Present inferior being spaced；It is provided with connection reinforcement plate between described base and described left plate, described right panel,
Air holes is formed between described connection reinforcement plate and described base, described steel body；At described substrate and described base
Between be provided with swash plate, between described swash plate and described base formed groove, the two ends of described groove are respectively toward to
The air holes of both sides.The present invention can improve the bonding strength between steel body and base by arranging connection reinforcement plate,
Simultaneously in order to reduce bottom hydrops problem, the present invention is provided with air holes, and the wind brought by air holes can be accelerated
Distributing recessed trough inner water, why the present invention arranges groove, is to accumulate to be converged by the globule on steel body
In groove, the reduction globule, to corrosion elsewhere, the most easily air-dries simultaneously.In order to protect groove, can
With bottom portion of groove, corrosion-resistant coating is set.
The present invention also sets the first connecting plate and the second connecting plate, this first connecting plate and the second connecting plate
Setting, can well improve the structural strength of whole steel body, especially steel body by different force time
Wait, just can well carry out playing the structural strength strengthening steel body, as long as by the first connecting plate or second even
Fishplate bar is placed in corresponding perforate, then carries out spot welding process by welding, forms distinctive reinforcement structure strong
The effect of degree.
From the foregoing, it will be observed that in place of the present invention can solve the problem that the deficiencies in the prior art, carry out rational layout
Arrange, increase the structural strength of entirety according to different actual needs, form equally distributed reinforcement dynamics,
Extend overall service life；Increase Corrosion Protection simultaneously, improve overall serviceability.
The two of the purpose of the present invention, it is simply that a kind of drum steel knot for manufacturing band base on house is provided
The alloy material of structure post, reduces the corrosion of steel construction and gets rusty, and improves overall steel structure performance.
The invention discloses the alloy material of a kind of drum steel structure column for band base on house, its
It is characterised by: include following component according to weight ratio:
Iron content is at 83-94%；
Manganese oxide content is at 1-1.5%；
Content of magnesia is at 0.3-2%；
Aluminum content is at 0.5-1%；
Zinc oxide content is at 0.3-2%；
Lithium oxide content is at 0.7-3%；
Titanium oxide content is at 0.5-1.5%；
Potassium oxide content is at 0.3-1%；
Nano-graphite content is at 1.5-5%.
The present invention is done further preferably, a kind of for manufacturing the drum steel structure column of band base on house
Alloy material, it includes following component according to weight ratio:
Iron content is at 85-90%；
Manganese oxide content is at 1-1.5%；
Content of magnesia is at 1-2%；
Aluminum content is at 0.5-1%；
Zinc oxide content is at 1-2%；
Lithium oxide content is at 0.7-2%；
Titanium oxide content is at 1-1.5%；
Potassium oxide content is at 0.5-1%；
Nano-graphite content is at 3-5%.
The present invention is done further preferably, a kind of for manufacturing the drum steel structure column of band base on house
Alloy material, it includes following component according to weight ratio:
Iron content is 86%；
Manganese oxide content is 1.5%；
Content of magnesia is 1.5%；
Aluminum content is 1%；
Zinc oxide content is 2%；
Lithium oxide content is 2.5%；
Titanium oxide content is 1.5%；
Potassium oxide content is 1%；
Nano-graphite content is 3%.
Compared with prior art, the present invention has a following beneficial effect:
In the present invention, mainly comprise the iron content in composition at 80-85%, but the present inventor is in order to prevent steel from tying
Structure premature corrosion or get rusty, with the addition of manganese oxide content at 1-1.5%, content of magnesia in 0.3-2%, oxidation
Zn content at 0.3-2%, lithium oxide content at 0.7-3%, titanium oxide content at 0.5-1.5%, potassium oxide content
At 0.3-1%；The increase of these elements, improves resistance to oxidation and the anticorrosion power of integrated steel-structure, extends
Service life；It is exposed on the external owing to steel construction is the most naked, air sometimes pollutes the acid rain caused it is endangered
Evil is bigger, and the interpolation of these elements in the present invention, it becomes possible to well protect steel construction.The additionally present invention
In order to increase the intensity of its entirety, also add aluminum content and at 0.5-1% or aluminum can be changed into copper, equally
The intensity of entirety can be increased so that steel construction can play in actual use and well support and connect
Connect.Additionally also add nano-graphite content at 1.5-5%, it is certain that this can make whole alloy property produce
Change, it is possible to make alloy have certain lubricant effect, because graphite has good lubricant effect and prevents
Rust ability, reduces the corrosion of steel structure surface and gets rusty, extending its service life, and the present invention is the most still
Do not occur that there is novelty.
In order to technical scheme is explained further, below by specific embodiment, the present invention is carried out
Elaborate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of the present invention.
Fig. 3 is the structural representation of the first connecting plate in the present invention.
Fig. 4 is the structural representation of the second connecting plate in the present invention.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the invention discloses a kind of work of band base on house
Formed steel construction post, including base 1 and i shaped steel body 2, described steel body 2 includes substrate 3, at described substrate
The both sides side of 3 forms left plate 4 and right panel 5 respectively, and described substrate 3, left plate 4, right panel 5 are integrated into
Type, it is characterised in that: on described left plate 4, described right panel 5, form symmetrically arranged perforate 6, described in open
Hole 6 is multiple, presents inferior being spaced；Between described base 1 and described left plate 4, described right panel 5
It is provided with connection reinforcement plate 7, between described connection reinforcement plate 7 and described base 1, described steel body 2, forms air holes
8；Swash plate 9 it is provided with, between described swash plate 9 and described base 1 between described substrate 3 and described base 1
Forming groove 10, the two ends of described groove 10 are respectively toward to the air holes 8 of both sides.
The corner of heretofore described steel body 2 is provided with arc 11, and described arc 11 sets for tilting upward
Putting, its angle of inclination is 15-30 degree, and the corner at described arc 11 is provided with water falling hole 12.
In the present invention, the outer surface at described steel body 2 is provided with corrosion-resistant coating, and the thickness of described corrosion-resistant coating is
1-3mm。
Also including the first connecting plate 20 and the second connecting plate 30 in the present invention, described first connecting plate 20 includes
First plate body 21, the two side ends at described first plate body 21 forms symmetrically arranged bearing pin 22, described
One plate body 21 is provided with multiple hole 23；Described bearing pin 22 is positioned at the both sides side angle of described first plate body 21,
Side at described first plate body 21 forms graphite limit 24, and described graphite limit 24 is relative with described bearing pin 22,
Described second connecting plate 30 includes the second plate body 31, and the both sides side of described second plate body 31 is formed symmetry
The pin rod group arranged, described pin rod group includes multiple pin rod 32 arranged at equal intervals, at described second plate body 31
Both sides up and down form draw-in groove 33 not of uniform size respectively.
The invention discloses a kind of for manufacturing the alloy material of the drum steel structure column of band base on house
Material, it is characterised in that: include following component according to weight ratio:
Iron content is at 83-94%；
Manganese oxide content is at 1-1.5%；
Content of magnesia is at 0.3-2%；
Aluminum content is at 0.5-1%；
Zinc oxide content is at 0.3-2%；
Lithium oxide content is at 0.7-3%；
Titanium oxide content is at 0.5-1.5%；
Potassium oxide content is at 0.3-1%；
Nano-graphite content is at 1.5-5%.
Embodiment one:
A kind of for manufacturing the alloy material of the drum steel structure column of band base on house, according to weight ratio
Including following component:
Iron content is 90%；
Manganese oxide content is 1%；
Content of magnesia is 0.3%；
Aluminum content is 0.5%；
Zinc oxide content is 1%；
Lithium oxide content is 0.7%；
Titanium oxide content is 1.5%；
Potassium oxide content is 1%；
Nano-graphite content is 4%.
By the steel construction of above-mentioned formula gained, integrally-built intensity is improved, and can bear for outside
Support force have clear improvement, the steel construction common with on existing market compares to be learnt.It addition, in the present invention
The oxidized metal element added, it is possible to play antioxidation, delays corrosion and the time got rusty, stone simultaneously
The increase of ink, is also obviously improved Corrosion Protection.
Embodiment two:
A kind of for manufacturing the alloy material of the drum steel structure column of band base on house, according to weight ratio
Including following component:
Iron content is 83%；
Manganese oxide content is 1.5%；
Content of magnesia is 2%；
Aluminum content is 1%；
Zinc oxide content is 2%；
Lithium oxide content is 3%；
Titanium oxide content is 1.5%；
Potassium oxide content is 1%；
Nano-graphite content is 5%.
By the steel construction of above-mentioned formula gained, integrally-built intensity is improved, and can bear for outside
Support force have clear improvement, the steel construction common with on existing market compares to be learnt.It addition, in the present invention
The oxidized metal element added, it is possible to play antioxidation, delays corrosion and the time got rusty, stone simultaneously
The increase of ink, is also obviously improved Corrosion Protection.
Embodiment three:
A kind of for manufacturing the alloy material of the drum steel structure column of band base on house, according to weight ratio
Including following component:
Iron content is 86%；
Manganese oxide content is 1.5%；
Content of magnesia is 1.5%；
Aluminum content is 1%；
Zinc oxide content is 2%；
Lithium oxide content is 2.5%；
Titanium oxide content is 1.5%；
Potassium oxide content is 1%；
Nano-graphite content is 3%.
By the steel construction of above-mentioned formula gained, integrally-built intensity is improved, and can bear for outside
Support force have clear improvement, the steel construction common with on existing market compares to be learnt.It addition, in the present invention
The oxidized metal element added, it is possible to play antioxidation, delays corrosion and the time got rusty, stone simultaneously
The minimizing of ink, has improvement for Corrosion Protection.
Embodiment four:
A kind of for manufacturing the alloy material of the drum steel structure column of band base on house, according to weight ratio
Including following component:
Iron content is 94%；
Manganese oxide content is 1%；
Content of magnesia is 0.7%；
Aluminum content is 0.5%；
Zinc oxide content is 0.8%；
Lithium oxide content is 0.7%；
Titanium oxide content is 0.5%；
Potassium oxide content is 0.3%；
Nano-graphite content is 1.5%.
By the steel construction of above-mentioned formula gained, integrally-built intensity is improved, and can bear for outside
Support force have improvement, the steel construction common with on existing market compares to be learnt.It addition, the present invention adds
Oxidized metal element reduce, some antioxidations can be played, extend corrosion and the time got rusty is not special
Substantially, the minimizing of graphite, has improvement for Corrosion Protection simultaneously.
The technical scheme being above being provided the embodiment of the present invention is described in detail, used herein
Principle and the embodiment of the embodiment of the present invention are set forth by specific case, the explanation of above example,
It is only applicable to help to understand the principle of the embodiment of the present invention；Simultaneously for one of ordinary skill in the art,
According to the embodiment of the present invention, detailed description of the invention and range of application all can change, in sum,
This specification content should not be construed as limitation of the present invention.
Claims (10)
1. the drum steel structure column of band base on house, including base and i shaped steel body, described steel body bag
Including substrate, the both sides side at described substrate forms left plate and right panel, described substrate, left plate, right panel respectively
It is formed in one, it is characterised in that: on described left plate, described right panel, form symmetrically arranged perforate, institute
It is multiple for stating perforate, presents inferior being spaced；Set between described base and described left plate, described right panel
There is connection reinforcement plate, between described connection reinforcement plate and described base, described steel body, form air holes；Described
It is provided with swash plate between substrate and described base, between described swash plate and described base, forms groove, described groove
Two ends be respectively toward to the air holes of both sides.
2. it is used for the drum steel structure column of band base on house as claimed in claim 1, it is characterised in that: institute
The corner stating steel body is provided with arc, and described arc is for tilting upward setting, and its angle of inclination is 15-30
Degree.
3. it is used for the drum steel structure column of band base on house as claimed in claim 2, it is characterised in that: in institute
The corner stating arc is provided with water falling hole.
4. want the drum steel structure column of band base on house as described in 1 such as right, it is characterised in that: described
The outer surface of steel body is provided with corrosion-resistant coating, and the thickness of described corrosion-resistant coating is 1-3mm.
5. as described in claim 1 or 4, it is used for the drum steel structure column of band base on house, it is characterised in that:
Also include the first connecting plate and the second connecting plate.
6. it is used for the drum steel structure column of band base on house as claimed in claim 1, it is characterised in that: institute
Stating the first connecting plate and include the first plate body, the two side ends at described first plate body forms symmetrically arranged bearing pin,
Described first plate body is provided with multiple hole；Described bearing pin is positioned at the both sides side angle of described first plate body,
Side at described first plate body forms graphite limit, and described graphite limit is relative with described bearing pin.
7. it is used for the drum steel structure column of band base on house as claimed in claim 1, it is characterised in that: institute
State the second connecting plate and include the second plate body, the both sides side of described second plate body forms symmetrically arranged pin rod
Group, described pin rod group includes multiple pin rod arranged at equal intervals, in the both sides up and down of described second plate body respectively
Form draw-in groove not of uniform size.
8. one kind is used for described in manufacturing claims 1 being used for the alloy of the drum steel structure column of band base on house
Material, it is characterised in that: include following component according to weight ratio:
Iron content is at 83-94%；
Manganese oxide content is at 1-1.5%；
Content of magnesia is at 0.3-2%；
Aluminum content is at 0.5-1%；
Zinc oxide content is at 0.3-2%；
Lithium oxide content is at 0.7-3%；
Titanium oxide content is at 0.5-1.5%；
Potassium oxide content is at 0.3-1%；
Nano-graphite content is at 1.5-5%.
9. according to a kind of for manufacturing the alloy of the drum steel structure column of band base on house described in right 8
Material, it is characterised in that: include following component according to weight ratio:
Iron content is at 85-90%；
Manganese oxide content is at 1-1.5%；
Content of magnesia is at 1-2%；
Aluminum content is at 0.5-1%；
Zinc oxide content is at 1-2%；
Lithium oxide content is at 0.7-2%；
Titanium oxide content is at 1-1.5%；
Potassium oxide content is at 0.5-1%；
Nano-graphite content is at 3-5%.
10. according to a kind of for manufacturing the conjunction of the drum steel structure column of band base on house described in right 8
Gold copper-base alloy, it is characterised in that: include following component according to weight ratio:
Iron content is 86%；
Manganese oxide content is 1.5%；
Content of magnesia is 1.5%；
Aluminum content is 1%；
Zinc oxide content is 2%；
Lithium oxide content is 2.5%；
Titanium oxide content is 1.5%；
Potassium oxide content is 1%；
Nano-graphite content is 3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610239357.4A CN105926852A (en) | 2016-04-11 | 2016-04-11 | H-shaped steel structural column provided with base for dwelling houses and alloy material for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610239357.4A CN105926852A (en) | 2016-04-11 | 2016-04-11 | H-shaped steel structural column provided with base for dwelling houses and alloy material for manufacturing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105926852A true CN105926852A (en) | 2016-09-07 |
Family
ID=56838237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610239357.4A Pending CN105926852A (en) | 2016-04-11 | 2016-04-11 | H-shaped steel structural column provided with base for dwelling houses and alloy material for manufacturing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105926852A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965052A (en) * | 2017-12-29 | 2018-04-27 | 广东象博生态科技有限公司 | A kind of steel column mounting structure and assembled-type house for assembled-type house |
| CN110924541A (en) * | 2019-11-01 | 2020-03-27 | 张家港宏昌钢板有限公司 | Hydraulic valve platform waterproof device |
-
2016
- 2016-04-11 CN CN201610239357.4A patent/CN105926852A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965052A (en) * | 2017-12-29 | 2018-04-27 | 广东象博生态科技有限公司 | A kind of steel column mounting structure and assembled-type house for assembled-type house |
| CN107965052B (en) * | 2017-12-29 | 2023-07-07 | 广东象博生态科技有限公司 | Steel column mounting structure for assembled house and assembled house |
| CN110924541A (en) * | 2019-11-01 | 2020-03-27 | 张家港宏昌钢板有限公司 | Hydraulic valve platform waterproof device |
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