Zowor Door Industry Co., Ltd
Make Zhongwo a fixed star in the development history of the door industry.
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Fire Resistance Rating(FRR):
Grade A: 1.5 Hours
Grade B: 1.0 Hour
Grade C: 0.5 Hour
Class A: also known as fully insulated door sets, it can meet the requirements of fire insulation and fire integrity at the same time within the prescribed time. The fire-resistance rating is 0.5h (Grade C), 1.0h (Grade B), and 1.5h (Grade A ) and 2.0h, 3.0h.
Class B: also known as partially insulated door sets, its fire insulation requirement is 0.5h and fire integrity rating is 1.0h,1.5h, 2.0h and 3.0h.
Class C: also known as no insulated door sets. There is no requirement for fire insulation. It only need to meet the requirement of fire integrity within the prescribed fire time and the fire integrity rating is 1.0h, 0.5h, 2.0h and 3.0h. We can get the content of no insulated door sets in BS standard.
Zhongwo steel Fire door is widely used in all kinds of public Fire -proof areas because of its solid structure and simple shape. Inlaid with fire -proof expansion sealing pieces, the door frame is made of high quality galvanized steel strip, which is one-time rolled and formed through the special production line, without impact sound when closing. Beams are connected with mullions by 90° angle welding, and the large size door frame can be assembled with bolts. The door leaf adopts the process that high-quality cold-rolled galvanized steel sheet is bent by the bending machine precisely, and its interior is filled with green and perlite board which has characters of fireproof, heat & sound insulation and its surface adopts technology without welding spots, so that to get smooth appearance.
| Door | Material | 0.8 mm Gal. steel |
| Infill | Magnesium Oxide Board | |
| Sealant | Fire-Rated liquid sealant on both inside surfaces of face panel | |
| Framework | U-Type skeleton, 1.5 mm Gal. steel | |
| Reinforcement | 3 mm Gal. Steel sheet as hinge and strike reinforcement | |
| Weight | 30 Kg/m2 | |
| Astragal | 0.8 mm Gal. steel | |
| Frame | Material | 1.2 mm Gal. steel |
| Type | Knock-down Frame, Welded Frame | |
| Reinforcement | 3 mm Gal. Steel sheet as hinge and strike reinforcement | |
| Stiffener | 0.8 mm Gal. steel | |
| Frame Depth | 120 mm | |
| Finish | Most popular by us is plastic spraying, we also have prime painting, heat transfer printing and stainless steel for you choice. | |
Surface Treatment
By us there are various options in door finishes, for example powder coating,wood grain and prime paint.
As standard finish we make it powder coating, for this there are many color options for your choice. Most popular colors are as following:PBG1001(pure white),B1068(beige), PS2328(Gray White), PS2869-2(dark gray), PS6018-5(matte orange). As for wood grain finish, we have rosewood grain colors, walnut wood grain, oak wood grain and also you can customize colors as you love.