It is an accredited laboratory designated by the Ministry of Economic Affairs. According to the new version of the national standard for fire doors GB_12955-2008, which was implemented on January 1, 2009, the fire door fire resistance test method passed the test and was issued by the Standards Inspection Bureau of the Ministry of Economic Affairs. Those who verify the login certificate and authorization mark are called fire doors. A fire door as defined by the American NFPA and IBC specifications is "any combination of fire door leaves, door jambs, hardware and other accessories that can simultaneously provide a certain degree of fire protection for the opening. Let's learn more about it with me from Decoration Network Let’s go.
Some basic knowledge about fire doors
Types
? Steel fire doors: door frames, door leaf frames and door leaf panels are made of steel materials. , the door leaf is filled with fire-proof and heat-insulating materials that are non-toxic and harmless to the human body, and is composed of fire-proof hardware accessories with certain fire-resistant properties.
? Wooden fire-proof door: made of fire-resistant wood or fire-resistant wood. Firewood products are used as door frames, door leaf frames, and door leaf panels. The door leaves are filled with non-toxic and harmless fireproof and heat-insulating materials, and are equipped with fireproof hardware accessories to form a door with certain fire resistance.
? Steel-wood fire doors: steel frame wooden fans? PET fire doors are the three types of type-approved fire doors after the country has replaced them with the new version.
Fire resistance level
According to different fire protection parts, there are currently three types of fire doors in China: insulated fire doors and non-insulated fire doors. Class C fire resistance time is 1 hour and Class C fire resistance time is 0.5 hours.
Structure
? Wooden fire door: The door frame structure is made of high-quality fir wood plus fireproof board, and is covered with a layer of polymer decorative board and door leaf. The pine wood frame is filled with perlite boards and the inner and outer 3~6mm thick fireproof boards are pressed together with melamine. It is a national patented technology that is not easy to crack and deform, and has a longer service life.
? Steel. The structure of the fire door is: the door frame is a 1.2~1.5mm thick high-quality cold-rolled steel plate that has been treated with anti-corrosion processes such as pickling and leaching, and then the surface is sprayed with high-quality plastic powder and baked at high temperature. The door leaf is a 0.8mm-thick high-quality cold-rolled steel plate that has been anti-corrosion treated. Finally, it is spray-molded and filled with perlite fireproof board as the skeleton.
Installation location
? Stairway (escape passage): Class B, no bottom sill, pre-embedded. (Usually 2cm-3cm) Depends on the ground. Aisle locks are usually installed (only handles, no lock core), and can be equipped with glass.
? Pipe well: Class C, normally with bottom sill, install pipe well lock. (There is only one key to the lock cylinder to open the entire building), no glass is allowed
? Distribution room, elevator front room: Class A, fireproof locks (with handles and lock cylinders) are installed, no glass is allowed. Glass.
Accessories
1. Sequencer: controls the closing sequence of doors, only at stairways, only installed on double doors
2. Closed doors. Device: only installed at the stairway
3. Hinge: Under normal circumstances, there are two hinges for door heights below 1.5 meters, 3 hinges between 1.5 and 2.2 meters, and 3 to 4 hinges for doors above 2.2 meters. A hinge.
4. Latch: There is no latch for single door, double door, split door, one latch at the top and bottom.
5. Locks: fire-proof locks (cannot be opened), tube well locks (can be opened), aisle locks (only handles, no lock core).
6. Glass: It is only installed on the door at the stairway. When placing an order, be sure to indicate whether it is the glass size or the hole size.
7. Fireproof tape: expands when exposed to heat to block smoke.
Classified by size
? Single opening: less than 1 meter, no latch.
? Mother-in-line: 1 meter---1.2 meters, one bolt at the top and one at the bottom. ? Folio: 1.2 meters---1.5 meters, one bolt at the top and one at the bottom.
*The above are normal conditions, and there are also special productions according to requirements.
Color and texture
? Color: microcomputer gray, white maple, mahogany, yew, red walnut, black walnut... ? Texture: flat (sprayed), transfer ( Wood grain color), vertical grain (three-dimensional relief, generally used in outdoor fire doors)... The above are the main commonly used colors. Different colors and textures have different prices. For details, please refer to the manufacturer's color card.
Steel entrance door
? Size: Usually steel entrance door has only two sizes: 960mm*2060mm (single opening) and 1160mm*2060mm (two-piece), which are called standard Doors and other sizes are called non-standard doors. They are measured according to the size of the opening. When making, the length and width are usually reduced by 1cm each.
? Steel plate thickness: frame (1.5mm, 1.2mm, 1mm) fan (1mm, 0.8mm, 0.6mm). The thickness of the steel plate is different, and the price is also different.
Opening direction: Steel fire doors must indicate a clear opening direction when placing an order, which is divided into left-outward opening, right-outward opening, left-inward opening, and right-inward opening (less frequently). When people stand outside the door, they judge the left and right by the direction of the hinge. If they push into the room, it opens inwards, and when they pull it back into their arms, they open outwards.
? Installation methods: middle installation, interior installation, exterior installation (exterior installation with hemming, other installation methods without) Steel fire doors do not need to calculate accessories, and the complete set (昘) leaves the factory.
Some basic knowledge about fire doors
The above is the relevant introduction I brought to you today. I believe that friends also have a certain understanding. I hope this article can Help you. You can also log in to view more related content and information. We believe that we will provide you with more complete, detailed and updated information.