CN113653261A - Multi-cavity combined concrete-filled steel tube special-shaped column - Google Patents
Multi-cavity combined concrete-filled steel tube special-shaped column Download PDFInfo
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- CN113653261A CN113653261A CN202111072190.4A CN202111072190A CN113653261A CN 113653261 A CN113653261 A CN 113653261A CN 202111072190 A CN202111072190 A CN 202111072190A CN 113653261 A CN113653261 A CN 113653261A
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- steel pipe
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- column
- shaped column
- steel tube
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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
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
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- Civil Engineering (AREA)
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- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a multi-cavity combined concrete-filled steel tube special-shaped column, which comprises: the steel pipe column comprises at least two steel pipe columns and connecting pieces, wherein the steel pipe columns are arranged at intervals, and concrete is contained in the steel pipe columns; two adjacent be connected with between the steel-pipe column two relative settings the connecting piece, two the concrete has been held between the connecting piece, every the connecting piece all includes: the connecting device comprises a connecting main board and connecting turning plates, wherein the connecting turning plates are connected to two ends of the connecting main board and are opposite to the connecting main board in a turning arrangement, and the two connecting turning plates are respectively connected to two adjacent steel pipe columns. Like this, through using the connecting piece to connect adjacent steel-pipe column for multicavity combination steel pipe concrete special-shaped column can assemble in the mill, and the connection equipment of multicavity combination steel pipe concrete special-shaped column is more convenient, promotes the packaging efficiency of multicavity combination steel pipe concrete special-shaped column, and the manufacturing cost of multicavity combination steel pipe concrete special-shaped column obtains reducing.
Description
Technical Field
The invention relates to the technical field of assembly type buildings, in particular to a multi-cavity combined concrete-filled steel tube special-shaped column
Background
In the prior art, studs are often provided within buildings to increase structural strength. However, because of the load-bearing design requirements of the house, the column usually needs to be designed to have a large size to meet the design requirements of the house, and the large-size column occupies a large indoor space and uses a large amount of steel. As such, it is necessary to assemble the columns on site at the construction site so that the production of the columns is relatively more cumbersome and costly.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a multi-cavity composite concrete filled steel tube special-shaped column, which has high structural strength, high production efficiency and relatively low production cost.
According to the embodiment of the invention, the multi-cavity combined concrete filled steel tube special-shaped column comprises: the steel pipe column comprises at least two steel pipe columns and connecting pieces, wherein the steel pipe columns are arranged at intervals, and concrete is contained in the steel pipe columns; two adjacent be connected with between the steel-pipe column two relative settings the connecting piece, two the concrete has been held between the connecting piece, every the connecting piece all includes: the connecting device comprises a connecting main board and connecting turning plates, wherein the connecting turning plates are connected to two ends of the connecting main board and are opposite to the connecting main board in a turning arrangement, and the two connecting turning plates are respectively connected to two adjacent steel pipe columns.
According to the multi-cavity combined concrete-filled steel tube special-shaped column provided by the embodiment of the invention, the adjacent steel tube columns are connected by using the connecting piece, so that the multi-cavity combined concrete-filled steel tube special-shaped column can be assembled in a factory, the multi-cavity combined concrete-filled steel tube special-shaped column is more convenient to connect and assemble, the assembling efficiency of the multi-cavity combined concrete-filled steel tube special-shaped column is improved, the multi-cavity combined concrete-filled steel tube special-shaped column is more stable and reliable to assemble, and the multi-cavity combined concrete-filled steel tube special-shaped column has higher service performance. Meanwhile, due to the fact that mechanical assembly is carried out in a factory, the number of workers participating in production of the multi-cavity combined concrete-filled steel tube special-shaped column is reduced in the production process, and the production cost of the multi-cavity combined concrete-filled steel tube special-shaped column is reduced. In addition, adopt the connecting piece to connect the steel-pipe column for the steel quantity that multicavity combination steel pipe concrete special-shaped column used when producing obtains reducing, with the manufacturing cost who reduces multicavity combination steel pipe concrete special-shaped column, makes the market competition of multicavity combination steel pipe concrete special-shaped column obtain promoting. By adopting the steel pipe concrete special-shaped column, the beam and the wall can be as wide as one another, the indoor wall surface has no column angle protruding from the indoor wall surface, the indoor use area is increased, and the furniture emission ratio is more regular. And the multi-cavity combined concrete-filled steel tube special-shaped column produced in a factory can be conveniently transported, so that the transportation cost of the multi-cavity combined concrete-filled steel tube special-shaped column is reduced.
In some embodiments, a transition fillet is disposed between the connection main plate and the connection flap.
In some embodiments, a gap is left between the two connecting flaps connected to the same side of the steel pipe column to form a gap.
In some embodiments, the gap has a width d1, the connection flap has a width d2, and d1 and d2 satisfy the relationship: d1 is more than 0 and less than or equal to d 2.
In some embodiments, the cross section of the steel pipe column is rectangular, one side plate of the steel pipe column is arranged side by side with the connecting main plate, and the outer surface of the side plate is flush with the outer surface of the connecting main plate.
In some embodiments, the length of the side panel is h1, the length of the connecting main panel is h2, and h1 and h2 satisfy the following relations: h1 is more than or equal to 20cm and less than or equal to 30cm, and h2 is more than or equal to 10cm and less than or equal to 40 cm.
In some embodiments, the steel pipe column and the connectors are multiple, and the steel pipe column and the connectors are in a straight shape, a T shape, a right angle shape or a Z shape.
In some embodiments, the connector is an integrally formed steel plate.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of a multi-cavity combined concrete filled steel tube special-shaped column according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a multi-cavity combined concrete filled steel tube special-shaped column according to an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a multi-cavity combined concrete filled steel tube special-shaped column according to an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a multi-cavity combined concrete filled steel tube special-shaped column according to an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a multi-cavity combined concrete filled steel tube special-shaped column according to an embodiment of the invention;
fig. 6 is a structural schematic diagram of a multi-cavity combined concrete filled steel tube special-shaped column according to an embodiment of the invention.
Reference numerals:
the multi-cavity combined steel pipe concrete special-shaped column 10, the concrete 11,
the length of the steel pipe column 100, the side plates 110,
a connecting piece 200, a connecting main board 210, a connecting turning plate 220,
a notch 300.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
A multi-cavity composite concrete filled steel tube profiled pole 10 according to an embodiment of the present invention is described below with reference to fig. 1 to 6, including: a steel pipe column 100 and a connector 200.
Specifically, at least two steel pipe columns 100 are arranged at intervals, and concrete 11 is contained in the steel pipe columns 100; be connected with two connecting pieces 200 that set up relatively between two adjacent steel-pipe columns 100, hold concrete 11 between two connecting pieces 200, every connecting piece 200 all includes: the connecting structure comprises a connecting main plate 210 and connecting turning plates 220, the connecting turning plates 220 are connected to two ends of the connecting main plate 210 and are arranged in a turning mode relative to the connecting main plate 210, and the two connecting turning plates 220 are respectively connected to two adjacent steel pipe columns 100.
It should be noted that the steel pipe column 100 and the connector 200 may be connected by welding, so as to improve the connection strength between the steel pipe column 100 and the connector 200, and make the multi-cavity combined steel pipe concrete special-shaped column 10 more reliable in use. Meanwhile, the assembling process of the steel pipe column 100 can be simplified, the assembling efficiency of the steel pipe column 100 is higher, in this way, when the multi-cavity combined steel pipe concrete special-shaped column 10 is produced, the steel pipe concrete special-shaped column can be assembled after being welded and assembled in a factory and is transported to a construction site, and therefore the multi-cavity combined steel pipe concrete special-shaped column 10 is simpler when being used, the assembling efficiency on the construction site is improved, the multi-cavity combined steel pipe concrete special-shaped column 10 is more convenient to use, the assembling personnel can be reduced when the multi-cavity combined steel pipe concrete special-shaped column 10 is assembled in the construction site, and the labor cost for using the multi-cavity combined steel pipe concrete special-shaped column 10 is reduced. In addition, the steel pipe column 100 and the connection column are transported after being welded. On the one hand, because the structural design of multicavity combination steel pipe concrete dysmorphism post 10 can be convenient for transport after production, especially the multicavity combination steel pipe concrete dysmorphism post 10 of the large quantity of being convenient for is transported for the cost of transportation of multicavity combination steel pipe concrete dysmorphism post 10 obtains reducing, on the other hand, because the transportation of being convenient for, make the influence to multicavity combination steel pipe concrete dysmorphism post 10 in the transportation obtain reducing, thereby let the transportation of multicavity combination steel pipe concrete dysmorphism post 10 more reliable.
In addition, in the production process of the multi-cavity combined steel pipe concrete special-shaped column 10, the connection turning plates 220 are arranged on the two sides of the connection main plate 210, and the connection turning plates 220 have a large contact area with the steel pipe column 100, so that the connection between the connecting piece 200 and the steel pipe column 100 is stable and reliable, the connection turning plates 220 are arranged on the two sides of the connection main plate 210, the rigidity strength of the steel pipe concrete special-shaped column can be increased, and the structural strength of the multi-cavity combined steel pipe concrete special-shaped column 10 is improved. When the connecting main board 210 reaches a certain thickness, the connecting main board 210 has high structural strength, and the connecting turning plate 220 can be omitted, so that the connecting board 200 is a straight steel plate and is welded with the steel pipe column 100, the manufacturing procedure is simplified, steel is saved, and the cost is reduced.
According to the multi-cavity combined concrete filled steel tube special-shaped column 10 provided by the embodiment of the invention, the adjacent steel tube columns 100 are connected by the connecting piece 200, so that the multi-cavity combined concrete filled steel tube special-shaped column 10 can be assembled in a factory, the multi-cavity combined concrete filled steel tube special-shaped column 10 is more convenient to connect and assemble, the assembling efficiency of the multi-cavity combined concrete filled steel tube special-shaped column 10 is improved, the multi-cavity combined concrete filled steel tube special-shaped column 10 is more stable and reliable to assemble, and the multi-cavity combined concrete filled steel tube special-shaped column 10 has higher service performance. Meanwhile, due to the fact that mechanical assembly is carried out in a factory, fewer workers are involved in production of the multi-cavity combined concrete filled steel tube special-shaped column 10 in the production process, and production cost of the multi-cavity combined concrete filled steel tube special-shaped column 10 is reduced. In addition, the connecting piece 200 is used for connecting the steel pipe column 100, so that the amount of steel used in the production of the multi-cavity combined steel pipe concrete special-shaped column 10 is reduced, the production cost of the multi-cavity combined steel pipe concrete special-shaped column 10 is reduced, and the market competitiveness of the multi-cavity combined steel pipe concrete special-shaped column 10 is improved. And the multi-cavity combined concrete filled steel tube special-shaped column 10 produced in a factory can be conveniently transported, so that the transportation cost of the multi-cavity combined concrete filled steel tube special-shaped column 10 is reduced.
In some embodiments, transition fillets are provided between the connection main panel 210 and the connection flap 220. Like this, can be equipped with the transition fillet that can reduce stress concentration between connecting mainboard 210 and the connection turns over board 220 for the connection between connecting piece 200 and the steel-pipe column 100 is more reliable, thereby lets the structure of multicavity combination steel pipe concrete special-shaped column 10 more reliable and stable, makes the performance of multicavity combination steel pipe concrete special-shaped column 10 promote.
In some embodiments, as shown in fig. 1-6, two connection flaps 220 connected to the same side of the steel pipe column 100 are spaced apart to form a gap 300. It can be understood that the oppositely arranged connecting pieces 200 are carried between the steel pipe columns 100, and the oppositely arranged connecting pieces 200 and the steel pipe columns 100 can jointly form a carrying space for installing the concrete 11, so that steel used in a gap formed between the two connecting turning plates 220 in a production process is saved, steel used in the production of the multi-cavity combined steel pipe concrete special-shaped column 10 can be reduced, and the production cost of the multi-cavity combined steel pipe concrete special-shaped column 10 is reduced.
In some specific embodiments, the width of the notch 300 is d1, the width of the connection flap 220 is d2, and the widths d1 and d2 satisfy the relationship: d1 is more than 0 and less than or equal to d 2. It can be understood that if the width of the gap 300 is too large, the contact area between the connection side plate 110 and the steel pipe column 100 is small, so that the connection stability between the connection side plate 110 and the steel pipe column 100 is reduced; if the width of the notch 300 is too small, the steel material is not saved obviously, and the cost is reduced. Thus, d1 and d2 satisfy the relationship: d2 is more than 0 and less than or equal to d1, so that the connecting side plates 110 can be stably and reliably connected with the steel pipe column 100, the structural strength is improved, steel can be obviously saved, and the production cost of the multi-cavity combined steel pipe concrete special-shaped column 10 is reduced.
Further, d2 is greater than or equal to 2.5cm, so that the connection stability between the connection side plate 110 and the steel pipe column 100 is relatively reliable, the multi-cavity combined concrete filled steel tube special-shaped column 10 has high structural strength, the use requirement of the multi-cavity combined concrete filled steel tube special-shaped column 10 is met, the cost can be saved as far as possible, and the production cost of the multi-cavity combined concrete filled steel tube special-shaped column 10 is further reduced.
In some specific embodiments, the cross section of the steel pipe column 100 is rectangular, one side plate 110 of the steel pipe column 100 is arranged side by side with the connecting main plate 210, and the outer surface of the side plate 110 is flush with the outer surface of the connecting main plate 210. It will be appreciated that the steel pipe column 100 may be generally rectangular in cross-section so that a connector 200 or other structural member may be connected thereto.
Of course, the cross-sectional shapes mentioned in the present invention are only patterns that are relatively convenient to design and produce, and other symmetrical patterns or cross-sectional shapes that satisfy the advantages mentioned in the present invention also belong to the protection scope of the present invention, and are not described herein again. Meanwhile, the outer surface of the side plate 110 is flush with the outer surface of the connecting main plate 210, so that the connecting piece 200 and the steel pipe column 100 are located in the same vertical plane, the wall surface formed by the multi-cavity combined steel pipe concrete special-shaped column 10 is more flat, a protruding part is prevented from being formed on the wall surface, the decoration of the wall surface is simpler, and the building formed by the multi-cavity combined steel pipe concrete special-shaped column 10 is more convenient to decorate in the subsequent process. In addition, the building constructed by using the multi-cavity combined concrete filled steel tube special-shaped column 10 has a smoother indoor space, so that the indoor space area of the building is increased, and the economy of the building is improved.
In some specific embodiments, the length of the side panel 110 is h1, the length of the connecting main panel 210 is h2, and h1 and h2 satisfy the following relations: h1 is more than or equal to 20cm and less than or equal to 30cm, and h2 is more than or equal to 10cm and less than or equal to 40 cm. Like this, because the length of curb plate 110 can be adjusted according to the operating mode to the on-the-spot condition of can more laminating of the thickness that makes steel-pipe column 100, so that the use of multicavity combination steel pipe concrete special-shaped column 10 can more accord with the design demand, and the use of multicavity combination steel pipe concrete special-shaped column 10 is more reliable, and the building that uses multicavity combination steel pipe concrete special-shaped column 10 to establish has higher performance. Simultaneously, because the length setting that will connect mainboard 210 is between 10cm to 40cm, make the length of connecting piece 200 also can adjust according to the in service behavior of multicavity combination steel pipe concrete special-shaped post 10, thereby let the use of multicavity combination steel pipe concrete special-shaped post 10 more laminate the on-the-spot in service behavior, multicavity combination steel pipe concrete special-shaped post 10 has higher performance, and multicavity combination steel pipe concrete special-shaped post 10 can adapt to different operating modes, so that the suitability of multicavity combination steel pipe concrete special-shaped post 10 obtains promoting, thereby let multicavity combination steel pipe concrete special-shaped post 10's market competition obtain promoting.
In some specific embodiments, as shown in fig. 1 to 6, the steel pipe column 100 and the connectors 200 are provided in plurality, and the plurality of steel pipe columns 100 and the plurality of connectors 200 are in a straight shape, a T shape, a right angle shape, or a Z shape. Of course, the present invention is not limited thereto, and the steel pipe column 100 and the connector 200 may be further configured in other shapes, which are not described herein. From this, form one of line-shaped, T font, right-angle shape or zigzag through the shape between steel-pipe column 100 and connecting piece 200 to make multicavity combination steel pipe concrete special-shaped column 10's suitability promote, thereby let multicavity combination steel pipe concrete special-shaped column 10's application scope promote, multicavity combination steel pipe concrete special-shaped column 10 can adapt to more kinds of service conditions, with the market competition who promotes multicavity combination steel pipe concrete special-shaped column 10.
In some embodiments, the connector 200 is a unitary steel plate. It should be noted that two sides of the connecting main board 210 may be bent to form the connecting flap 220. Like this, connecting piece 200 has higher structural strength to make connecting piece 200 can be more reliable and stable connect between adjacent steel-pipe column 100, the structure of multicavity combination steel pipe concrete special-shaped column 10 uses more stably, thereby lets multicavity combination steel pipe concrete special-shaped column 10 have higher performance. Moreover, since the connecting member 200 is formed by using the integrally formed steel plates, the production process of the connecting member 200 is simpler, so that the production efficiency of the connecting member 200 is improved, and the production efficiency of the multi-cavity combined concrete filled steel tubular special-shaped column 10 is improved.
Other constructions and operations of the multi-cavity combination steel pipe concrete special-shaped column 10 according to the embodiment of the invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. The utility model provides a multicavity combination steel pipe concrete dysmorphism post which characterized in that includes:
the steel pipe columns are arranged at intervals, and concrete is contained in the steel pipe columns;
the connecting piece, two adjacent be connected with two relative settings between the steel-pipe column the connecting piece, two the concrete has been held between the connecting piece, every the connecting piece all includes: the connecting device comprises a connecting main board and connecting turning plates, wherein the connecting turning plates are connected to two ends of the connecting main board and are opposite to the connecting main board in a turning arrangement, and the two connecting turning plates are respectively connected to two adjacent steel pipe columns.
2. The multi-cavity combination concrete filled steel tube profiled pole according to claim 1, characterized in that a transition fillet is arranged between the connecting main plate and the connecting turning plate.
3. The multi-cavity combination steel pipe concrete special-shaped column according to claim 1, wherein a gap is reserved between the two connecting turning plates connected to the same side of the steel pipe column to form a notch.
4. The multi-cavity combination concrete filled steel tube profiled pole according to claim 3, characterized in that the width of the gap is d1, the width of the connecting flap is d2, and d1 and d2 satisfy the relation: d1 is more than 0 and less than or equal to d 2.
5. The multi-cavity combined concrete-filled steel tube special-shaped column according to claim 1, wherein the cross section of the steel tube column is rectangular, one side plate of the steel tube column is arranged side by side with the connecting main plate, and the outer surface of the side plate is flush with the outer surface of the connecting main plate.
6. The multi-cavity combination concrete filled steel tube profiled pole according to claim 5, characterized in that the length of the side plate is h1, the length of the connecting main plate is h2, and h1 and h2 satisfy the relations: h1 is more than or equal to 20cm and less than or equal to 30cm, and h2 is more than or equal to 10cm and less than or equal to 40 cm.
7. The multi-cavity combined concrete-filled steel tube special-shaped column according to claim 1, wherein the number of the steel tube columns and the number of the connecting pieces are multiple, and the multiple steel tube columns and the multiple connecting pieces are in a straight shape, a T shape, a right angle shape or a Z shape.
8. The multi-cavity combination concrete filled steel tube profiled pole according to claim 1, characterized in that the connecting piece is an integrally formed steel plate.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111072190.4A CN113653261A (en) | 2021-09-14 | 2021-09-14 | Multi-cavity combined concrete-filled steel tube special-shaped column |
| PCT/CN2022/115646 WO2023040648A1 (en) | 2021-09-14 | 2022-08-30 | Concrete-filled steel tube special-shaped column unit, and concrete-filled steel tube special-shaped combined column |
| CN202290000097.4U CN221399586U (en) | 2021-09-14 | 2022-08-30 | Steel pipe concrete special-shaped column unit and steel pipe concrete special-shaped combined column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111072190.4A CN113653261A (en) | 2021-09-14 | 2021-09-14 | Multi-cavity combined concrete-filled steel tube special-shaped column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113653261A true CN113653261A (en) | 2021-11-16 |
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ID=78493914
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111072190.4A Pending CN113653261A (en) | 2021-09-14 | 2021-09-14 | Multi-cavity combined concrete-filled steel tube special-shaped column |
| CN202290000097.4U Active CN221399586U (en) | 2021-09-14 | 2022-08-30 | Steel pipe concrete special-shaped column unit and steel pipe concrete special-shaped combined column |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202290000097.4U Active CN221399586U (en) | 2021-09-14 | 2022-08-30 | Steel pipe concrete special-shaped column unit and steel pipe concrete special-shaped combined column |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN113653261A (en) |
| WO (1) | WO2023040648A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040648A1 (en) * | 2021-09-14 | 2023-03-23 | 北京天邦巨成科技有限公司 | Concrete-filled steel tube special-shaped column unit, and concrete-filled steel tube special-shaped combined column |
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| CN103243860A (en) * | 2013-05-15 | 2013-08-14 | 北京航空航天大学 | Multi-chamber type steel pipe and concrete combined L-shaped column |
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| CN205577262U (en) * | 2016-03-18 | 2016-09-14 | 北京亚太可建钢结构技术研发有限公司 | Steel pipe concrete special -shaped column |
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| CN113653261A (en) * | 2021-09-14 | 2021-11-16 | 北京天邦巨成科技有限公司 | Multi-cavity combined concrete-filled steel tube special-shaped column |
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2021
- 2021-09-14 CN CN202111072190.4A patent/CN113653261A/en active Pending
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2022
- 2022-08-30 WO PCT/CN2022/115646 patent/WO2023040648A1/en unknown
- 2022-08-30 CN CN202290000097.4U patent/CN221399586U/en active Active
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| KR20130117936A (en) * | 2012-04-19 | 2013-10-29 | 주식회사 한구조엔지니어링 | Connecting plate crossing type concrete filled tubular column |
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| WO2023040648A1 (en) * | 2021-09-14 | 2023-03-23 | 北京天邦巨成科技有限公司 | Concrete-filled steel tube special-shaped column unit, and concrete-filled steel tube special-shaped combined column |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023040648A1 (en) | 2023-03-23 |
| CN221399586U (en) | 2024-07-23 |
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