Fire Protection Coating for Steel Structures
2.Performance: Integrates fire resistance, heat insulation and anti-corrosion, standard-compliant, eco-friendly;
3.Application: Key steel structures in civil, commercial and industrial buildings, bridges and tunnels;
4.Construction: Spraying, simple operation, adaptable to complex steel structure shapes;
5.Parameter: Fire resistance ≥2.2h, compliant with international fire standards, adhesion grade 0, durable.
6. +5~40°C; RH≤85%; substrate ≥3°C above dew point.
7. Indoor not UV/weather resistant; outdoor UV/weather finish needed.
8. Indoor protected areas; outdoor >5y needs UV/weather coating.
9. Store ventilated 5–45°C; shelf 12m water/solvent, 6m cement.
10. Water/cement non-hazardous; solvent flammable UN1263 Class 3.
11. VOC water≤120g/L; solvent≤650g/L.
- Product Description
Fire Protection Coating for Steel Structures
Picking the correct Fire Protection Coating for Steel Structures is important when your building project needs reliable fire safety. The professional-grade coating solution from Henan Banggu is based on over 30 years of industrial experience and tried-and-true performance measures. Our intumescent covering keeps heat from transferring for up to 2.2 hours, has a bonding strength of at least 0.15 MPa, and keeps thermal conductivity at a low level. This coating is certified by ISO 9001, ISO 14001, and ISO 45001, and it also meets the requirements of GB 14907-2018. It comes in both water-based and solvent-based versions, so it can be used for a wide range of projects in civil engineering, industry, and business.
What Makes Our Steel Structure Fire Protection Different?
Compliance alone is not enough. You need defence that works.
When our coating comes into contact with flames, it quickly swells and forms a thick layer of carbonised insulation. This barrier slows the transfer of heat to steel parts, keeping the structure from collapsing during the crucial escape time.
The method can help you with your projects in real life. Short cooling times cut down on building delays. Application thicknesses as thin as 3 to 50 mm reduce structure loads to a minimum. With many colour choices, you can keep the look of the building without sacrificing safety.
You can easily spray this products onto warehouses, business towers or transportation infrastructure, and it will fit into even the most complicated shapes.
Technical Parameters
| Property | Specification |
|---|---|
| Appearance State | Uniform paste/powder, free from impurities |
| Bonding Strength | ≥0.15 MPa |
| Compressive Strength | ≥0.3 MPa |
| Water Resistance | No blistering or peeling after 72 hours |
| Fire Resistance Limit (Thin Type) | 0.5–3 hours |
| Fire Resistance Limit (Thick Type) | 2–6 hours |
| Thermal Conductivity | ≤0.12 W/(m·K) |
| Applicable Substrate | Various steel structural components |
| Construction Temperature | 5–38 °C |
| Theoretical Coating Quantity | 0.8–1.5 kg/m² |
| Coating Thickness | 3–50 mm |
| Storage Temperature | –5–40 °C |
| Toxicity Level | Low toxicity, no irritating odor |
How to Apply This Coating?
The way you apply changes performance. This is what works best.
Get ready by cleaning the steel areas of rust, oil, and other junk. Make sure the temperature of the ground stays 3°C above the dew point.
Spraying is the best way to cover big areas quickly and evenly. For small areas or touch-ups, brushing or rolling works.
Environment: Use when the temperature is between 5 and 35°C and the humidity is less than 85%. Stay away from wet or foggy weather.

Surface dries in half an hour to an hour and a half. It takes 12 to 24 hours to fully heal. After every coat, wait at least 4 hours.
For every millimetre of width, one kilogram covers about 1.2 to 1.5 m². Figure out what you need based on the fire protection grade that is needed.
Why Engineering Teams Choose Banggu?
Proven Performance Under Fire
This Fire Protection Coating for Steel Structures acts right away when flames hit your building. The intumescent formula grows up to many times its original thickness, making a layer of char that covers steel beams, columns, and bridges and keeps them from melting.
Environmental Responsibility
Low VOC level meets strict rules for the environment. Water-based options have less than 120g/L of VOCs, while solvent-based choices stay below 650g/L. Once it's dry, the covering doesn't give off any harmful chemicals, so it's safe for places that people are using.
Complete Certification Package
You can get paperwork that meets the needs of foreign projects and fire safety checks if you have CE certification, ISO 9001, ISO 14001, or ISO 45001 compliance.
Flexible Customization

Need certain colours? Customised recipes? We offer OEM and ODM services that are customised to fit the needs of your project. You can choose from standard white and light grey, or you can ask for a different colour.
Technical Support When You Need It
Our engineering team provides free advice before the sale, during building, and after the job is finished. We help you figure out how much fire protection you need, make sure the thickness standards are met, and get fire safety approvals.
FAQ
Q: What does "intumescent" signify for fire protection?
A: Under fire, the coating immediately foams and expands, generating a dense carbonised insulating layer that blocks flames and heat. By slowing steel temperature increase, the building doesn't quickly lose stability during a fire, reaching the intended fire resistance rating.
Q: How are solvent- and water-based formulations different?
A: Solvent-based coatings improve water resistance, hardness, and adhesion. They fit strong, weatherproof interior projects. Eco-friendly water-based solutions dry slower and have reduced water resistance, but they smell less.

Q: Which application methods work best?
A: Using spray, brush, or roll works. Large areas are best sprayed because to its efficiency and flawless finish. Roll or brush small areas or touch-ups.
Q: What thickness do I need for different fire resistance ratings?
A: References: 0.5h ≈ 1.5mm, 1.0h = 1.5-2.2mm, 1.5h ≈ 1.8-3.3mm, 2.0h ≈ 3.0-4.5mm. For full project specs, consult the test report.
Q: Can this coating be used outside?
A: Use this product inside only. Intumescent or non-intumescent fire-retardant coatings with UV and weather resistance are needed for outdoor applications. Our experts may propose outdoor products.
Contact Us
Ready to specify proven fire protection with Fire Protection Coating for Steel Structures? Our team provides technical documentation, samples, and project-specific recommendations. Reach us at banggu@bgfireproof.com for immediate assistance.
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