CN219690789U - Building firewall - Google Patents
Building firewall Download PDFInfo
- Publication number
- CN219690789U CN219690789U CN202222687058.0U CN202222687058U CN219690789U CN 219690789 U CN219690789 U CN 219690789U CN 202222687058 U CN202222687058 U CN 202222687058U CN 219690789 U CN219690789 U CN 219690789U
- Authority
- CN
- China
- Prior art keywords
- fireproof
- glass fiber
- fire
- constructional column
- fixed mounting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 239000003365 glass fiber Substances 0.000 claims abstract description 25
- 239000000376 reactant Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000378 calcium silicate Substances 0.000 claims abstract description 16
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 16
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000012943 hotmelt Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims description 13
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 239000004088 foaming agent Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001569 carbon dioxide Substances 0.000 abstract description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 4
- 239000006260 foam Substances 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241000257303 Hymenoptera Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Building Environments (AREA)
Abstract
The utility model discloses a building firewall, in particular to the field of fireproof building materials, which comprises two steel columns, wherein a plurality of fireproof wallboards are longitudinally and fixedly arranged between the two steel columns, each fireproof wallboard comprises a constructional column, a glass fiber frame is fixedly arranged on the inner walls of the two protection boards respectively, a hot melt plate is arranged in the middle of the inner cavities of the two glass fiber frames, the inner cavities of the glass fiber frames are vertically divided into a first reactant tank and a second reactant tank by the hot melt plate, and one ends of the two glass fiber frames far away from the fireproof material tanks are fixedly provided with a calcium silicate plate respectively. The building firewall provided by the utility model can effectively prevent fire, can generate and release a large amount of carbon dioxide and foam inside for extinguishing fire when fire is urgent, and only needs to simply clean residual materials on the surface of the burnt fireproof wallboard after the fire is extinguished, and is provided with accessories, so that the operation is simple and convenient, the cost is saved, and the labor intensity of maintenance workers is reduced.
Description
Technical Field
The utility model relates to the field of fireproof building materials, in particular to a building firewall.
Background
The fire-proof wall body is formed by fire-proof plate and other installation components, the fire-proof plate adopts siliceous material or calcareous material as main raw material, and is mixed with fibre material, light aggregate, adhesive and chemical additive in a certain proportion, and the fire-proof limit of the decorative plate made by using autoclaved technology is not less than 3 hr, so that it can be used for dividing fire-proof partition or preventing important partition member for spreading fire between buildings, and can effectively limit fire in a certain space in the initial stage of fire and in the fire-extinguishing process, and can prevent fire from spreading to another side of fire-proof wall body.
Most of fire-proof walls in the current market are assembled fire-proof wall structures, and the installation is characterized in that reinforced concrete or steel columns are firstly built, then fireproof wallboards are installed and hoisted in a layered mode between the columns, the repair difficulty is high and the period is long after the conventional assembled fire-proof wall bottom structure burns, and the wallboards need to be detached from top to bottom for maintenance.
Disclosure of Invention
The utility model mainly aims to provide a building firewall which can effectively solve the problem that an assembled firewall is difficult to disassemble and maintain and can release fire extinguishing agent to extinguish fire in case of emergency.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a building firewall comprising a steel structural frame, characterized in that: the steel structure frame comprises two steel columns, and a plurality of fireproof wallboards are longitudinally and fixedly arranged between the two steel columns;
the fireproof wallboard comprises a constructional column, a boss is fixedly arranged at the upper end of the constructional column, a clamping groove is formed in the lower end of the constructional column, a fireproof material groove is respectively formed in the left side and the right side of the constructional column, a protection plate is respectively and fixedly arranged on the inner wall of the fireproof material groove, the structure of the protection plate is C-shaped, a glass fiber frame is respectively and fixedly arranged on the inner wall of the protection plate, a hot melting plate is fixedly arranged in the middle of an inner cavity of the glass fiber frame, the hot melting plate vertically divides the inner cavity of the glass fiber frame into a first reactant groove and a second reactant groove, a calcium silicate plate is respectively and fixedly arranged at one ends of the two glass fiber plates, far away from the fireproof material groove, and a plurality of equidistant mounting holes are respectively formed in the periphery of the two sides of the constructional column.
Preferably, a stabilizing frame is fixedly arranged at the left end and the right end of each steel column, the stabilizing frames are in an X shape, a plurality of fixing holes are formed in one side, close to the other steel column, of each steel column, and two locating frames are fixedly arranged on two sides of the fireproof wallboard at the bottommost end.
Preferably, the boss is the same as the clamping groove in size and corresponds to the clamping groove in position.
Preferably, the first reactant tank is filled with sodium bicarbonate solution, and the second reactant tank is filled with aluminum sulfate solution and foaming agent.
Preferably, the surface of the constructional column is electroplated with a chromium coating.
Preferably, the outer surface of the calcium silicate board is provided with a fireproof coating.
Compared with the prior art, the utility model has the following beneficial effects:
1. the integrity of the wall body is protected through the multi-layer structure such as the fireproof coating, the calcium silicate plate, the glass fiber frame, the protection plate and the like, the first reactant tank and the second reactant tank in the middle of the inner cavity of the glass fiber frame are respectively filled with sodium bicarbonate solution and aluminum sulfate solution, and are separated by the hot melt plate, and the hot melt plate melts after being heated and enables the two reagents to react in a mixing way to generate a large amount of foam and carbon dioxide, so that the aim of extinguishing fire and reducing fire is achieved.
2. After the fire disaster occurs, because the components of the fireproof wallboard, such as the calcium silicate plate, the glass fiber frame, the protection plate and the like, are assembled, the factory is convenient for mass standardized production, and only residual materials damaged on the surface of the fireproof wallboard need to be cleaned when the wall body is maintained, and new components are installed one by one through bolts.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of a fire-resistant wall panel according to the present utility model;
FIG. 3 is a schematic structural view of a constructional column of the utility model;
fig. 4 is a schematic cross-sectional view of a fire-resistant wall panel according to the present utility model.
In the figure: 1. a steel structural frame; 2. fireproof wallboard; 11. a steel column; 12. a fixing hole; 13. a stabilizing rack; 14. a positioning frame; 21. constructing a column; 22. a fireproof material groove; 23. a boss; 24. a clamping groove; 25. a mounting hole; 26. a protective plate; 27. a glass fiber frame; 28. a first reactant tank; 29. a second reactant tank; 210. a hot melt plate; 211. a calcium silicate board.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
As shown in fig. 1, the building firewall comprises a steel structure frame 1, wherein the steel structure frame 1 comprises two steel columns 11, a plurality of fireproof wallboards 2 are longitudinally and fixedly arranged between the two steel columns 11, standardized and managed informatization of an assembled wall body design can be realized, the components can be industrially produced in a factory, the production efficiency is high, the corresponding component cost is low, and the digital management is matched, so that the cost performance of the whole assembled firewall is very high, the assembled firewall can be directly installed on a construction site, and the assembled firewall is convenient and quick, and can shorten the construction period of workers;
as shown in fig. 2 to 4, the fireproof wallboard 2 comprises a constructional column 21, a boss 23 is fixedly arranged at the upper end of the constructional column 21, a clamping groove 24 is formed at the lower end of the constructional column 21, a fireproof material groove 22 is respectively formed at the left side and the right side of the constructional column 21, a protection plate 26 is respectively fixedly arranged on the inner walls of the fireproof material grooves 22 at the two sides, the protection plate 26 is in a C-shaped structure, the protection plate 26 is made of a flame retardant material and is used for protecting the constructional column 21, a glass fiber frame 27 is respectively fixedly arranged on the inner walls of the two protection plates 26, glass fibers are high-temperature resistant and stable in chemical property, a hot-melt plate 210 is arranged in the middle of inner cavities of the two glass fiber frames 27, the hot-melt plate 210 melts when encountering high temperature, the inner cavities of the glass fiber frames 27 are divided into a first reactant groove 28 and a second reactant groove 29 up and down by the hot-melt plate 210, the two glass fiber frames 27 are respectively fixedly provided with a calcium silicate plate 211 at one end far away from the fireproof material groove 22, the calcium silicate plate 211 has excellent fireproof performance, is nontoxic and harmless in case of fire, has good waterproof performance, can keep stable performance at a place with high humidity, cannot expand or deform, has stable performance, is acid and alkali resistant, is not easy to corrode, cannot be damaged by moisture or insect ants and the like, can ensure the service life of the super-long, a plurality of equidistant mounting holes 25 are respectively formed in the periphery of two sides of the constructional column 21, the transverse mounting holes 25 can be used for mounting the calcium silicate plate 211, and the longitudinal mounting holes 25 can be used for fixedly mounting the steel column 11.
In order to fix the whole structure of the steel structure frame 1, as shown in fig. 1, a stabilizer 13 is fixedly mounted at the left end and the right end of two steel columns 11, the stabilizer 13 is in an X shape, one side of each of the two steel columns 11, which is close to the other steel column 11, is provided with a plurality of fixing holes 12 for fixedly mounting the fireproof wallboard 2, and two positioning frames 14 are fixedly mounted at the two sides of the fireproof wallboard 2 at the bottommost end respectively, so that the wall surface keeps verticality.
In order to splice the fireproof wallboards 2 with each other, as shown in fig. 3, the boss 23 and the clamping groove 24 have the same size and correspond to each other in position, and the fireproof wallboards 2 at the bottom can be spliced in the clamping groove 24 at the bottom end of the fireproof wallboards 2 adjacent to the top through the boss 23.
As shown in fig. 4, the first reactant tank 28 is filled with sodium bicarbonate solution, the second reactant tank 29 is filled with aluminum sulfate solution and a small amount of foaming agent, when a fire disaster occurs, the external calcium silicate plate 211 can resist flame for more than three hours, if the fire disaster is not reduced, the internal glass fiber frame 27 is exposed when the calcium silicate plate 211 is burnt, at this time, the hot melt plate 210 melts when encountering heat, the first reactant tank 28 is mixed with the sodium bicarbonate solution and the aluminum sulfate solution in the second reactant tank 29, and a double hydrolysis reaction occurs, namely weak acid anions and weak base cations promote hydrolysis mutually, and simultaneously, a large amount of carbon dioxide and foam are sprayed under the action of the foaming agent, so that the burnt substances can be adhered on combustion objects, the air is isolated, the temperature is reduced, and the aim of fire extinction is achieved.
In order to protect the constructional column 21 from corrosion by fire extinguishing agents or reactants, as shown in fig. 3, the surface of the constructional column 21 is electroplated with a chromium coating which has good chemical stability, does not act in alkali, sulfide, nitric acid and most organic acids, but is soluble in hydrochloric acid and hot sulfuric acid, and has a low coefficient of friction, particularly a dry coefficient of friction, which is the lowest in all metals, so that the chromium coating also has good wear resistance, and the corrosion resistance and the friction resistance of the chromium coating can well protect the internal materials.
As shown in fig. 2, the outer surface of the calcium silicate board 211 is provided with a layer of fireproof coating, and the fireproof coating is formed by brushing the fireproof coating on the surface of the material, so that the fireproof capability of the material can be improved, the propagation speed of flame propagation can be slowed down, or combustion can be prevented within a certain time, precious time is strived for rescue and fire extinguishment, and small fires can effectively prevent fire and insulate until the fire is extinguished, and the waste of internal extinguishing agent triggering is avoided.
It should be noted that, in the installation of the fire-proof wall for the building, two steel columns 11 are fixed firstly, then the fireproof wallboard 2 is hung by a hoisting device and is placed between the two steel columns 11, the boss 23 of the fireproof wallboard 2 at the bottom is inserted into the clamping groove 24 at the bottom end of the fireproof wallboard 2 adjacent to the top, and the fixing hole 12 and the installation hole 25 are fixedly installed through bolts; when a fire disaster occurs, the calcium silicate plates 211 with fireproof coatings on two sides can prevent combustion in a certain time, if the fire is not reduced after a certain time, the hot melting plate 210 will melt and flame will burn the glass fiber frame 27, the sodium bicarbonate solution and the aluminum sulfate solution in the first reactant tank 28 and the second reactant tank 29 are mixed to generate double hydrolysis reaction, a large amount of foam and carbon dioxide are generated and sprayed out after the glass fiber frame 27 is damaged, and the fire-extinguishing agent can be adhered to combustion objects to isolate the burnt substances from air, reduce the temperature and achieve the aim of extinguishing fire; after fire, the damaged fireproof wallboard 2 can be repaired according to the damage condition of the fireproof wallboard 2, the residual materials on the surface of the damaged fireproof wallboard 2 are cleaned, the inner constructional column 21 is intact due to the protection of the chromium coating, and the new protecting plate 26, the glass fiber frame 27, the hot melt plate 210, the calcium silicate plate 211 and other components can be reinstalled.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A building firewall comprising a steel structural frame (1), characterized in that: the steel structure frame (1) comprises two steel columns (11), and a plurality of fireproof wallboards (2) are longitudinally and fixedly arranged between the two steel columns (11);
fireproof wallboard (2) include a constructional column (21), the upper end fixed mounting of constructional column (21) has boss (23), draw-in groove (24) have been seted up to the lower extreme of constructional column (21), a fire prevention material groove (22) have been seted up respectively to the left and right sides of constructional column (21), both sides the inner wall of fire prevention material groove (22) is fixed mounting respectively has a protection shield (26), the structure of protection shield (26) is the C type, two the inner wall of protection shield (26) is fixed mounting respectively has a glass fiber frame (27), two fixed mounting has hot melt board (210) in the middle of the internal cavity of glass fiber frame (27), hot melt board (210) divide into reactant groove (28) and No. two reactant groove (29) about the internal cavity of glass fiber frame (27), the one end that fire prevention material groove (22) were kept away from to two glass fiber frames (27) is fixed mounting respectively has a calcium silicate board (211), the mounting hole (25) of a plurality of equidistance that still are equipped with respectively all around of constructional column (21).
2. A building firewall according to claim 1, wherein: two the left and right ends of steel column (11) fixed mounting has a stabilizing frame (13), just stabilizing frame (13) are X type, and two the one side that steel column (11) is close to another steel column (11) has all offered a plurality of fixed orificess (12), and the both sides of fire prevention wallboard (2) of bottommost still are fixed mounting respectively have two locating rack (14).
3. A building firewall according to claim 1, wherein: the boss (23) and the clamping groove (24) are the same in size and correspond to each other in position.
4. A building firewall according to claim 1, wherein: the inside of the first reactant tank (28) is filled with sodium bicarbonate solution, and the inside of the second reactant tank (29) is filled with aluminum sulfate solution and foaming agent.
5. A building firewall according to claim 1, wherein: the surface of the constructional column (21) is electroplated with a chromium coating.
6. A building firewall according to claim 1, wherein: the outer surface of the calcium silicate board (211) is provided with a fireproof coating.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202222687058.0U CN219690789U (en) | 2022-10-12 | 2022-10-12 | Building firewall |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202222687058.0U CN219690789U (en) | 2022-10-12 | 2022-10-12 | Building firewall |
Publications (1)
Publication Number | Publication Date |
---|---|
CN219690789U true CN219690789U (en) | 2023-09-15 |
Family
ID=87945907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202222687058.0U Expired - Fee Related CN219690789U (en) | 2022-10-12 | 2022-10-12 | Building firewall |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN219690789U (en) |
-
2022
- 2022-10-12 CN CN202222687058.0U patent/CN219690789U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN219690789U (en) | Building firewall | |
KR20070074282A (en) | Fireproof panel and manufacture method for the same | |
CN102877570A (en) | Exterior insulation compound wall body with support meeting fire-resistance limit requirement and protective layer | |
KR200420037Y1 (en) | Sandwich Panel with Fire Barrier Board | |
CN214983680U (en) | Polyurethane foam with high flame retardant effect | |
CN213027294U (en) | Stainless steel groove type fireproof shaft cable bridge | |
CN210887646U (en) | Subway engineering fire prevention plugging device easy to assemble | |
CN211817180U (en) | Fireproof shear wall building structure | |
CN211228994U (en) | Firewall formed by steel pipe concrete composite structure | |
CN202181622U (en) | External thermal insulation composite wall with bearing meeting requirement of fireproof limit s and protective layers | |
KR100601339B1 (en) | A sandwich panel | |
KR200383482Y1 (en) | A sandwich panel | |
CN212001890U (en) | Mechanism silicalite color steel sandwich panel | |
CN218577211U (en) | Fireproof paper-surface gypsum board | |
CN206142578U (en) | Elevator manual -automatic switch | |
CN216109313U (en) | Fireproof light batten for building partition wall | |
CN210007281U (en) | novel fireproof bridge frame | |
CN214941237U (en) | Fireproof cable blocking partition | |
CN215054155U (en) | Fireproof high-temperature-resistant foamed polystyrene board for building external wall | |
CN217439244U (en) | External thermal insulation building wall structure | |
CN221168219U (en) | Fireproof heat-preservation safety steel structure | |
CN221441795U (en) | Fireproof steel structure for building | |
CN215300115U (en) | Synthesize pipe ditch fire prevention shutoff board and block structure | |
CN219887219U (en) | Fireproof flame-retardant integrated wallboard | |
CN113250345B (en) | Connecting mechanism for wall corner of assembled house and construction process of connecting mechanism |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20230915 |