Self Closing Steel Fire Doors
Fire doors are one of the measures for fire separation of buildings. They are usually required to be separated from smoke and fire at the entrance of the firewall, stairs, or the opening of the pipe well. Fire doors play an important role in preventing the spread and spread of smoke and fire and reducing losses.
Standard & Certificate
Zhongwo steel fire doors are all tested in accordance with American Standard NFPA252, ULC S104, UL10(b) and UL10(c). We can provide you with UL/WHI certificate for various sizes and fire ratings.
Fire Rating
Zhongwo steel fire doors meet the requirement for up to 180 mins(20/30/60/90/150/180mins) fire rating as American standard doors.
Material
Generally we see galvanized steel sheet with thickness of 20-18-16 Ga. for sashes; and 18-16-14 Ga. Galvanized steel sheet for frames. This kind of steel sheet is environment-friendly and green without any harm to people.
As Options we offer you also 304 and 301 stainless steel which are more beautiful in surface and more durable in performance.
Infilling
Standard infilling materials by us are fireproof perlite board with different densities in harmony with various fire ratings.
We have also mineral core, honeycomb paper and polyethylene foam for your options.
Finish
As far as the surface treatment is concerned, we have different choices for you, too. Powder coating is our standard. And prime paint, wood grain finishes are basic options. By the way, prime paint means water-based paint.
Size
For pair doors popular sizes by us are 6’X7’ and max. 8’X8’.
For single doors popular sizes by us are 3’X7’ and max. 4’X8’.
Customization is also acceptable.
Glass
A. Reinforcement channel is provided.
B. Glass frame and glazing bead is steel.
C. Glass is UL listed glazing material.
D. Maximum allowable glass area:2 Hours, 100 sq. in. Per door leaf (Fire lite)
Features
| Item | Zhongwo Steel Fire Rated Door |
| Top Quality and Eco-friendly& Healthy Infilling Material | All of our fireproof perlite board must reach level A1 of the combustion performance standard according to GB8624-2006 and level ZA2 of toxicity standard according to GB/T20285-2006.
Besides, the density of our fireproof perlite board is in top quality, originally it reaches 472.6kg/m3, by drying treatment it still remains457.3kg/m3, which are both great higher than the standard of 420kg/m3. |
| Top Appearance Quality | Surface adopts technology without welding spots, so that to get smooth appearance. |
| Top Fire Insulation Performance | Average temperature rise of unexposed surface reaches 94.2℃, highest temperature rise at single point reaches 148.6℃, both are far away lower than the standard of not beyond 140℃ and 180℃. And the highest temperature point on door frame reaches 140.8℃, also much lower than the standard of not beyond 360℃. |
| High Fire Integrity Performance | When fire test reaches 1.5 hours the flame on unexposed surface of our fire door sustained no longer than 10 seconds. |
Hardware
As standard we equip every door with galvanized steel hinges, locksets and high quality door closers. We can also send you panic push bar, fire bolts, magnetic door stoppers or other accessories as your request. Melting temperature of hardware installed in doors should be no less than 950℃.
Besides, we also have stainless steel hardware when you want.
Package
Package method is vital to ensure the safety and to avoid any damage in transportation, so we values very much the correct package.
Standard: PE Paper+Double Layer Strong Carton or wooden pallet
We can also pack doors and frames as your request, just exchange the details with us.
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Blue Self Closing Fire Access Doors For Industrial Buildings/ 45 mm Thick/1mm Gal. Steel Sheet Images
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