CN105863467A - Steel heat-insulating and fireproof primary and secondary door combination and manufacturing method thereof - Google Patents
Steel heat-insulating and fireproof primary and secondary door combination and manufacturing method thereof Download PDFInfo
- Publication number
- CN105863467A CN105863467A CN201610466923.5A CN201610466923A CN105863467A CN 105863467 A CN105863467 A CN 105863467A CN 201610466923 A CN201610466923 A CN 201610466923A CN 105863467 A CN105863467 A CN 105863467A
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- CN
- China
- Prior art keywords
- door
- doorframe
- fire
- female
- uterus
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
- E06B5/161—Profile members therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/74—Making other particular articles frames for openings, e.g. for windows, doors, handbags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
- E06B3/72—Door leaves consisting of frame and panels, e.g. of raised panel type
- E06B3/76—Door leaves consisting of frame and panels, e.g. of raised panel type with metal panels
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
- E06B5/164—Sealing arrangements between the door or window and its frame, e.g. intumescent seals specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Special Wing (AREA)
Abstract
The invention belongs to the technical field of manufacturing of doors and windows, and particularly relates to a steel heat-insulating and fireproof primary and secondary door combination and a manufacturing method thereof. The steel heat-insulating and fireproof primary and secondary door combination comprises a door frame and a sash, wherein the sash comprises a primary door and a secondary door; the primary door and the secondary door are respectively hinged to the left side and the right side of the door frame; the primary door, the secondary door and the surface of the door frame are made of cold-rolled galvanized steel sheets; the primary door and the secondary door are filled with expanded perlite fireproof plates; a magnesium-silicon fireproof plate is arranged on a fire surface portion of the inner wall of the door frame; and magnesium-silicon fireproof plates are also respectively arranged on side surfaces, which are attached to the door frame, of the primary door and the secondary door and the side surfaces, which are attached to each other, of the primary door and the secondary door. The magnesium-silicon fireproof plates are arranged on a crack between the secondary door and the door frame, a crack between the primary door and the door frame and a crack between the secondary door and the primary door, so that fire resistance of door cracks can be greatly improved, and fire is prevented against spreading outwards from the door cracks.
Description
Technical field
The invention belongs to door and window manufacturing technology field, be specifically related to a kind of steel heat-insulating, fire-preventing primary and secondary
Door and preparation method thereof.
Background technology
Existing fire metal door, the most all passes through hinge, lockset and door thereof with doorframe and door leaf
Assemble with five metals.The doorframe of fire resistant doorsets is to be directly over shear, punching press, folding by metallic plate
The working procedure processing such as curved, welding.Door leaf is the door skin shaped internal filling fire prevention to be filled out
Fill thing to process.For making door leaf have certain intensity, steel skeleton inside door leaf, has been needed to prop up
Support, in order to realize the integrity of fire resistant doorsets, meet the needs of fire resistance steel door fire endurance.So
And fireprotection layer of the prior art is often all disposed within door leaf surface (the i.e. fire surface one of door leaf
Side), but during breaking out of fire, the intensity of a fire typically can be the most climing from the gap between door leaf surrounding and doorframe
Prolonging, if not improving the fire protecting performance of this part, the fire protecting performance of door leaf is good to be more also difficult to stop
The intensity of a fire.
Summary of the invention
It is an object of the invention to provide a kind of steel that can effectively stop the intensity of a fire to spread from crack between a door and its frame heat insulation
Fire prevention big and small door and preparation method thereof.
For achieving the above object, the invention provides techniques below scheme:
A kind of steel heat-insulating, fire-preventing big and small door, including doorframe and door leaf, described door leaf includes female Men Hezi
Door, described female door and cervical orifice of uterus are respectively hinged at the left and right sides of doorframe, and female door and cervical orifice of uterus are to doorframe
Homonymy folding is arranged, and described female door, cervical orifice of uterus and door frame surface are made by cold-rolling galvanization steel plate, and
Filled by expanded perlite PLASTIC LAMINATED inside female door and cervical orifice of uterus, described female door and cervical orifice of uterus and doorframe joint place
And the joint place between mother's door and cervical orifice of uterus is equipped with fire-proof expansion seal strip；The fire surface of doorframe inwall
Part is provided with magnesium silicon PLASTIC LAMINATED, with the side of doorframe laminating and female Men Yuzi on described female door and cervical orifice of uterus
Side bonded to each other between Men also is provided with magnesium silicon PLASTIC LAMINATED, and described magnesium silicon PLASTIC LAMINATED lays respectively at doorframe
Inside the cold-rolling galvanization steel plate of door leaf surface；
The side, back of the body fire face of described doorframe is provided with deep gouge, and described door leaf is positioned at deep gouge, door leaf when cutting out
And the fire-proof expansion seal strip between doorframe is positioned at the step corner of deep gouge；
Crevice place between female door and cervical orifice of uterus is provided with the lid seam plate of strip, described lid seam plate be two and
Before and after door leaf, the crack between door, female is covered tightly by both sides respectively, and front/rear cover seam plate is with sub, female
The structure that cold-rolling galvanization steel plate is integral type bending forming on door surface；
Described door leaf height is 2204mm, and door leaf thickness is 50mm, and the width of female door is 974mm, son
The width of door is 417mm, and the crack between door, female is 3mm；
The degree of depth of described doorframe is 100mm, wherein deep gouge degree of depth 50mm；
Described magnesium silicon PLASTIC LAMINATED thickness is 5mm, and the cold-rolling galvanization steel plate thickness of door leaf is 0.8mm, doorframe
Cold-rolling galvanization steel plate thickness be 1.2mm；
The density of described expanded perlite PLASTIC LAMINATED is 400kg/m3± 10%.
A kind of manufacture method for manufacturing described steel heat-insulating, fire-preventing big and small door:
Doorframe makes:
(1) blanking, is punched out four block length bar shaped blanks with punch press on cold-rolling galvanization steel plate；
(2) punching press, utilizes stamping machine that four blocks of blanks are struck out four channel-shaped frames；
(3) it is respectively welded at the bottom of the inner side slot of four channel-shaped frames or rivets one piece of magnesium silicon PLASTIC LAMINATED；
(4) utilize welding or riveting process that four edges frame is assembled into entirety；
Door leaf makes:
A. punching press bending technique is used to become size to meet outside the door leaf of regulation cold-rolling galvanization steel plate bending
Shell, door leaf shell is the tubular structure of upper lower open mouth, and the seam of shell is positioned on described lid seam plate；
B. the inner side at the left and right sides wall of door leaf shell is welded or riveting magnesium silicon PLASTIC LAMINATED；
C. in door leaf shell, tamp expanded perlite PLASTIC LAMINATED；
D. bending riveting process is used to install top board and base plate, described top board additional at the upper and lower two ends of door leaf shell
Be all previously provided with magnesium silicon PLASTIC LAMINATED inside base plate；
Door leaf, doorframe are installed
I., hinge for fireproof is installed in the doorframe left and right sides, by cervical orifice of uterus and female door respectively with the doorframe left and right sides
Hinge for fireproof connect；
II. installing door closer between female door and doorframe, door closer is arranged on female door upper end.
The method have technical effect that: the present invention is at the crevice place of cervical orifice of uterus and female door and doorframe and son
Crevice place between door and female door is provided with magnesium silicon PLASTIC LAMINATED, it is possible to be greatly improved the fire resistance at crack between a door and its frame
Can, prevent the intensity of a fire from outwards spreading from crack between a door and its frame.
Accompanying drawing explanation
Fig. 1 is the front view of the present invention；
Fig. 2 is the A-A sectional view of Fig. 1.
Detailed description of the invention
In describing the invention, it should be noted that term " on ", D score, " left ",
Orientation or the position relationship of the instruction such as " right ", "front", "rear", " interior ", " outward " are base
In orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, and
It not to indicate or imply that the device of indication or element must have specific orientation, with specific orientation structure
Make and operate, be therefore not considered as limiting the invention.
As shown in Figure 1, 2, a kind of steel heat-insulating, fire-preventing big and small door, including doorframe 10 and door leaf, institute
State door leaf and include that female door 11 and cervical orifice of uterus 12, described female door 11 and cervical orifice of uterus 12 are respectively hinged at doorframe 10
The left and right sides, and female door 11 and cervical orifice of uterus 12 arrange to the homonymy folding of doorframe 10, described female door
11, cervical orifice of uterus 12 and doorframe 10 surface are made by cold-rolling galvanization steel plate 101,111, and female door
11 and cervical orifice of uterus 12 is internal is filled by expanded perlite PLASTIC LAMINATED 112, described female door 11 and cervical orifice of uterus 12
And the joint place between doorframe 10 joint place and female door 11 and cervical orifice of uterus 12 is equipped with fire prevention Expansion sealing
Bar 15；The fire surface part of doorframe inwall is provided with magnesium silicon PLASTIC LAMINATED 20, described female door 11 and cervical orifice of uterus 12
Between side and female door 11 and cervical orifice of uterus 12 that upper and doorframe 10 is fitted, side bonded to each other also is provided with
Magnesium silicon PLASTIC LAMINATED 20, described magnesium silicon PLASTIC LAMINATED 20 lays respectively at the cold rolling plating of doorframe 10 and door leaf surface
Inside zinc steel plate 101,111.The present invention at cervical orifice of uterus and female door and the crevice place of doorframe and cervical orifice of uterus with female
Crevice place between Men is provided with magnesium silicon PLASTIC LAMINATED, it is possible to be greatly improved the fire resistance at crack between a door and its frame, anti-
Only the intensity of a fire outwards spreads from crack between a door and its frame.
Preferably, the side, back of the body fire face of described doorframe 10 is provided with deep gouge, and it is heavy that described door leaf is positioned at when cutting out
In groove, the fire-proof expansion seal strip 15 between door leaf and doorframe 10 is positioned at the step corner of deep gouge.
Door leaf and doorframe 10 compact assembling structure, globality is preferable.
Further, the crevice place between female door 11 and cervical orifice of uterus 12 is provided with the lid seam plate 16 of strip,
Described lid seam plate 16 be two and respectively before and after door leaf both sides by the folder between door 11,12 sub, female
Seam covers tightly, front/rear cover seam plate 16a, 16b and the cold-rolling galvanization steel plate on door 11,12 surface sub, female
111 is the structure of integral type bending forming.
Preferably, described door leaf height L1 is 2204mm, and door leaf thickness L2 is 50mm, female door 11
Width L3 be 974mm, the width L4 of cervical orifice of uterus 12 is 417mm, between door 11,12 sub, female
Crack is 3mm.Preferably, degree of depth L5 of described doorframe 10 is 100mm, wherein deep gouge degree of depth 50mm.
Preferably, described magnesium silicon PLASTIC LAMINATED thickness is 5mm, and cold-rolling galvanization steel plate 111 thickness of door leaf is
0.8mm, cold-rolling galvanization steel plate 101 thickness of doorframe 10 is 1.2mm.Above-mentioned being sized to guarantees to prevent
The fire-protection rating of vent reaches pre-provisioning request.
Preferably, the density of described expanded perlite PLASTIC LAMINATED 112 is 400kg/m3± 10%.
Present invention also offers a kind of making side for manufacturing described steel heat-insulating, fire-preventing big and small door
Method:
Doorframe makes:
1 blanking, is punched out four block length bar shaped blanks with punch press on cold-rolling galvanization steel plate；
2 punching presses, utilize stamping machine that four blocks of blanks are struck out four channel-shaped frames；
3 are respectively welded or rivet one piece of magnesium silicon PLASTIC LAMINATED 20 at the bottom of the inner side slot of four channel-shaped frames；
4 utilize welding or riveting process that four edges frame is assembled into entirety；
Door leaf makes:
A. punching press bending technique is used to become size to meet outside the door leaf of regulation cold-rolling galvanization steel plate bending
Shell, door leaf shell is the tubular structure of upper lower open mouth, and the seam of shell is positioned on described lid seam plate 16；
B. the inner side at the left and right sides wall of door leaf shell is welded or riveting magnesium silicon PLASTIC LAMINATED 20；
C. in door leaf shell, tamp expanded perlite PLASTIC LAMINATED 112；
D. bending riveting process is used to install top board and base plate, described top board additional at the upper and lower two ends of door leaf shell
Be all previously provided with magnesium silicon PLASTIC LAMINATED 20 inside base plate；
Door leaf, doorframe are installed
I., hinge for fireproof 13 is installed in the doorframe left and right sides, by cervical orifice of uterus 12 and female door 11 respectively with doorframe
The hinge for fireproof 13 of 10 left and right sides connects；
II. installing door closer 14 between female door 11 and doorframe 10, door closer 14 is arranged on female door 11
Upper end.
Claims (8)
1. a steel heat-insulating, fire-preventing big and small door, including doorframe (10) and door leaf, described door leaf includes
Female door (11) and cervical orifice of uterus (12), described female door (11) and cervical orifice of uterus (12) are respectively hinged at doorframe (10)
The left and right sides, and female door (11) and cervical orifice of uterus (12) are to the homonymy folding setting of doorframe (10),
It is characterized in that: described female door (11), cervical orifice of uterus (12) and doorframe (10) surface are by cold rolling plating
Zinc steel plate (101,111) is made, and female door (11) and cervical orifice of uterus (12) inside are by expanded perlite
PLASTIC LAMINATED (112) is filled, described female door (11) and cervical orifice of uterus (12) and doorframe (10) joint place with
And the joint place between mother's door (11) and cervical orifice of uterus (12) is equipped with fire-proof expansion seal strip (15)；Door
The fire surface part of frame inwall is provided with magnesium silicon PLASTIC LAMINATED (20), described female door (11) and cervical orifice of uterus (12)
Go up between side and female door (11) and cervical orifice of uterus (12) that doorframe (10) is fitted bonded to each other
Side also is provided with magnesium silicon PLASTIC LAMINATED (20), and described magnesium silicon PLASTIC LAMINATED (20) lays respectively at doorframe (10)
Cold-rolling galvanization steel plate (101,111) inner side with door leaf surface.
Steel heat-insulating, fire-preventing big and small door the most according to claim 1, it is characterised in that: described door
The side, back of the body fire face of frame (10) is provided with deep gouge, and described door leaf is positioned at deep gouge, door leaf and door when cutting out
Fire-proof expansion seal strip (15) between frame (10) is positioned at the step corner of deep gouge.
Steel heat-insulating, fire-preventing big and small door the most according to claim 2, it is characterised in that: female door (11)
And the crevice place between cervical orifice of uterus (12) is provided with lid seam plate (16) of strip, described lid seam plate (16)
It is two and before and after door leaf, the crack between door, female (11,12) is covered tightly by both sides respectively, front,
Bonnet seam plate (16a, 16b) and the cold-rolling galvanization steel plate (111) on door, female (11,12) surface
Structure for integral type bending forming.
Steel heat-insulating, fire-preventing big and small door the most according to claim 1, it is characterised in that: described door
Fan height (L1) is 2204mm, and door leaf thickness (L2) is 50mm, the width (L3) of female door (11)
For 974mm, the width (L4) of cervical orifice of uterus (12) is 417mm, between door, female (11,12)
Crack is 3mm.
Steel heat-insulating, fire-preventing big and small door the most according to claim 4, it is characterised in that: described door
The degree of depth (L5) of frame (10) is 100mm, wherein deep gouge degree of depth 50mm.
Steel heat-insulating, fire-preventing big and small door the most according to claim 5, it is characterised in that: described magnesium
Silicon PLASTIC LAMINATED thickness is 5mm, and cold-rolling galvanization steel plate (111) thickness of door leaf is 0.8mm, doorframe (10)
Cold-rolling galvanization steel plate (101) thickness be 1.2mm.
Steel heat-insulating, fire-preventing big and small door the most according to claim 6, it is characterised in that: described swollen
The density of swollen perlite fireproof plate (112) is 400kg/m3± 10%.
8. the steel heat-insulating, fire-preventing big and small door being used for described in manufacturing claims 1 to 7 any one
Manufacture method, it is characterised in that:
Doorframe makes:
(1) blanking, is punched out four block length bar shaped blanks with punch press on cold-rolling galvanization steel plate；
(2) punching press, utilizes stamping machine that four blocks of blanks are struck out four channel-shaped frames；
(3) it is respectively welded at the bottom of the inner side slot of four channel-shaped frames or rivets one piece of magnesium silicon PLASTIC LAMINATED
(20)；
(4) utilize welding or riveting process that four edges frame is assembled into entirety；
Door leaf makes:
A. punching press bending technique is used to become size to meet outside the door leaf of regulation cold-rolling galvanization steel plate bending
Shell, door leaf shell is the tubular structure of upper lower open mouth, and the seam of shell is positioned at described lid seam plate (16)
On；
B. the inner side at the left and right sides wall of door leaf shell is welded or riveting magnesium silicon PLASTIC LAMINATED (20)；
C. in door leaf shell, tamp expanded perlite PLASTIC LAMINATED (112)；
D. bending riveting process is used to install top board and base plate, described top board additional at the upper and lower two ends of door leaf shell
Be all previously provided with magnesium silicon PLASTIC LAMINATED (20) inside base plate；
Door leaf, doorframe are installed
I., hinge for fireproof (13) is installed, by cervical orifice of uterus (12) He Mumen (11) point in the doorframe left and right sides
It is not connected with the hinge for fireproof (13) of doorframe (10) left and right sides；
II. between female door (11) and doorframe (10), door closer (14), door closer (14) are installed
It is arranged on female door (11) upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610466923.5A CN105863467A (en) | 2016-06-22 | 2016-06-22 | Steel heat-insulating and fireproof primary and secondary door combination and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610466923.5A CN105863467A (en) | 2016-06-22 | 2016-06-22 | Steel heat-insulating and fireproof primary and secondary door combination and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105863467A true CN105863467A (en) | 2016-08-17 |
Family
ID=56655246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610466923.5A Pending CN105863467A (en) | 2016-06-22 | 2016-06-22 | Steel heat-insulating and fireproof primary and secondary door combination and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105863467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302496A (en) * | 2019-08-01 | 2021-02-02 | 武义龙泰金属制品有限公司 | Fireproof and smoke-proof composite door |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0791148A (en) * | 1993-09-20 | 1995-04-04 | Bunka Shutter Co Ltd | Manufacture of fire-preventive, sound insulation door |
| JPH07166767A (en) * | 1993-12-13 | 1995-06-27 | Kinki Kogyo Kk | Fire door |
| CN201196001Y (en) * | 2008-02-04 | 2009-02-18 | 北京曼特门业有限公司 | Fireproof sound insulation door, door leaf and door frame |
| CN201650042U (en) * | 2010-05-17 | 2010-11-24 | 余河新 | Steel heat insulation fire door |
| CN201687371U (en) * | 2010-04-07 | 2010-12-29 | 东莞市华棱安防科技有限公司 | Edge-covering free steel heat insulation fireproof door |
| CN202266167U (en) * | 2011-07-30 | 2012-06-06 | 上海申华声学装备有限公司 | Steel heat-insulated fire-check door |
| CN204899691U (en) * | 2015-07-31 | 2015-12-23 | 宁波爱瑞门业有限公司 | Wooden thermal -insulated fire door that prevents of steel |
-
2016
- 2016-06-22 CN CN201610466923.5A patent/CN105863467A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0791148A (en) * | 1993-09-20 | 1995-04-04 | Bunka Shutter Co Ltd | Manufacture of fire-preventive, sound insulation door |
| JPH07166767A (en) * | 1993-12-13 | 1995-06-27 | Kinki Kogyo Kk | Fire door |
| CN201196001Y (en) * | 2008-02-04 | 2009-02-18 | 北京曼特门业有限公司 | Fireproof sound insulation door, door leaf and door frame |
| CN201687371U (en) * | 2010-04-07 | 2010-12-29 | 东莞市华棱安防科技有限公司 | Edge-covering free steel heat insulation fireproof door |
| CN201650042U (en) * | 2010-05-17 | 2010-11-24 | 余河新 | Steel heat insulation fire door |
| CN202266167U (en) * | 2011-07-30 | 2012-06-06 | 上海申华声学装备有限公司 | Steel heat-insulated fire-check door |
| CN204899691U (en) * | 2015-07-31 | 2015-12-23 | 宁波爱瑞门业有限公司 | Wooden thermal -insulated fire door that prevents of steel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302496A (en) * | 2019-08-01 | 2021-02-02 | 武义龙泰金属制品有限公司 | Fireproof and smoke-proof composite door |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160817 |
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