DN-DK FireShield complies with national GB 14907-2018 Type H standard, relying on inorganic thermal aggregates to build a rigid low heat conduction barrier with thermal conductivity ≤0.10 W/m·K, delivering up to 3 hours reliable fire resistance at 25–35mm film thickness to effectively block high heat transfer and prevent steel structural failure in fires. With ≥0.04 MPa strong bonding performance, it resists long-term vibration, water, acid, alkali and thermal cycling without cracking, peeling or blistering, providing permanent stable fire protection for heavy load-bearing steel components.
Unlike thin decorative fire coatings, DN-DK is designed specifically for outdoor, underground and highly corrosive industrial scenarios including petrochemical plants, offshore platforms, tunnels and exterior stadium steel frames. Its inorganic formula features outstanding weather and chemical resistance to withstand constant humidity, temperature swings and chemical splashes year-round, while the asbestos-free, non-toxic composition guarantees safe construction for enclosed underground and factory spaces without harmful fumes or contaminants..
DN-DK has a lightweight dry density ≤600 kg/m³ to lower total material usage and project cost, supporting spray application up to 10mm per single layer with 6–8 hour interval between coats for fast thickness build-up. It works seamlessly on both exposed outdoor steel and hidden ceiling-wrapped structural frames, covering high-rise columns, bridge supports and factory trusses with one universal coating. Long service life and minimal maintenance after installation further cut full-lifecycle expenditure for large industrial, transit and commercial steel construction projects.
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