Outdoor intumescent fire retardant coating for steel structure

Outdoor Intumescent Fire Retardant Coating for Steel Structure 

When fire safety and reliability come together, you need a solution that works in the worst circumstances. Our Outdoor intumescent fire retardant coating for steel structure offers security and has been shown to work. This covering, which was made by Henan Banggu Fire Technology Co., Ltd., has a fire resistance rate of 1.6 hours and keeps its flame-retardant grade A performance. With a VOC content of less than 30g/L and a service life of more than 8 years, it is safe for the environment and will work for a long time. Our solution is used by industrial plants, business buildings, and infrastructure projects all over the world. It is backed by more than 30 years of experience making coatings and full ISO 9001, ISO 14001, and ISO 45001 certificates. When the coating comes in contact with fire, it quickly expands, creating a thick layer of carbonised protection that keeps the steel from deforming and the structure from falling apart.

How Intumescent Technology Protects Your Steel?

Some people may wonder how a thin layer can protect huge steel buildings. Intumescent technology holds the key to the answer.

Our product quickly changes chemically when flames reach the top. Within minutes, it grows up to 50 times its original size. This makes a thick, hard layer of carbonised foam that keeps the steel below warm.

The shield does a good job of stopping heat movement. Steel keeps its ability to hold weight longer. The structure of your building stays sound during important escape times.

This isn't just a guess. The guidelines set by GB 14907-2018 have been used to test our covering. It always gives you the fire protection scores your projects need.

Technical Parameters at a Glance

Why Choose Our Fire Retardant Solution?

Fire Performance You Can Trust

Your steel beams, columns, and trusses face serious risks during fires. Our coating responds instantly. It forms a dense insulation layer that slows heat penetration. Steel components resist deformation. Structural integrity remains intact longer.

This performance isn't accidental. It comes from precise formulation and rigorous testing. Every batch meets international fire protection standards.

Built for Outdoor Environments

Outdoor steel structures face harsh conditions. UV radiation, temperature swings, moisture, and weathering all take their toll.

Our outdoor intumescent fire retardant coating for steel structure is specifically designed for these challenges. Enhanced weather resistance protects against degradation. The coating maintains its fire-protective properties for over 8 years, even in demanding climates.

Environmentally Responsible and Safe

You don't have to choose between safety and sustainability. Our coating achieves both.

With VOC content at ≤30g/L, it meets strict environmental standards. Low toxicity and minimal odor make application safer for your workers. ISO 14001 certification confirms our commitment to environmental management.

After curing, the coating is non-toxic and harmless. It's suitable for commercial buildings, factories, and public spaces where people work daily.

Fast Application, Quick Results

Time is money on any construction site. Our coating dries quickly, reducing project timelines.

Surface drying occurs in approximately 0.5–1 hour. Full curing takes 12–24 hours. You can apply multiple coats with just a 4-hour interval between layers.

Application methods are flexible. Spraying works best for large areas, delivering efficiency and smooth finishes. Brushing and rolling are also viable for smaller sections or touch-ups.

Lightweight and Decorative

Traditional fire protection can add significant weight to structures. Our thin-film technology minimizes this concern.

With coating thickness ranging from 3–50 mm depending on the required fire rating, you add minimal structural load. This is crucial for projects where weight efficiency matters.

Standard colors include white and light gray. Custom colors are available to match your architectural vision. The smooth finish looks professional and requires no additional decorative covering.

Complete Technical Support Throughout Your Project

You're not alone when you work with us. Our technical team supports you from planning to completion.

Before you start: We provide free product selection consultation, technical documentation, and assistance with fire safety approvals.

During construction: Access 24/7 remote guidance, standardized installation manuals, and expert troubleshooting.

After completion: We help with acceptance documentation, fire safety inspections, and maintenance recommendations.

Our senior engineers can visit your site or provide periodic project inspections. We verify fire resistance calculations and assist with complex applications.

Application Guidelines

Surface Preparation

Proper substrate preparation ensures strong bonding. Remove rust, oil, dirt, and loose particles from steel surfaces. Sandblasting or wire brushing works well for rust removal.

The substrate temperature must be at least 3°C above the dew point. This prevents condensation, which interferes with adhesion.

Environmental Conditions

Apply when temperatures range from 5°C to 35°C. Relative humidity should stay below 85%.

Avoid application during rain, fog, or heavy dew. High winds can also compromise coating quality.

Application Process

1. Mix the coating thoroughly before use
2. Apply using spray equipment, brush, or roller
3. Build up coating thickness gradually in multiple layers
4. Maintain consistent thickness across all surfaces
5. Allow proper drying time between coats

Thickness Requirements for Fire Ratings

Your required fire resistance determines coating thickness:

• 0.5 hours: approximately 1.5 mm
• 1.0 hour: approximately 1.5–2.2 mm
• 1.5 hours: approximately 1.8–3.3 mm
• 2.0 hours: approximately 3.0–4.5 mm

Always refer to the test report for precise specifications matching your steel profile.

Topcoat Compatibility

After the product fully cures, you can apply a compatible topcoat. This enhances decorative appeal and adds stain resistance without affecting fire performance.

Choose solvent-based or water-based topcoats according to your project requirements.

FAQ

Q1: What distinguishes solvent-based and water-based coatings?

A: Solvent-based variants dry quicker, adhere better, resist water, and harden. They fit applications that need strength, weather resistance, and speed. Water-based solutions are greener, smell less, dry slower, and have less water resistance.

Q2: Does this coating meet standards?

A: Our coating meets GB 14907-2018 "Fireproof Coatings for Steel Structures." National fire protection product test results make it appropriate for fire safety inspections and regulatory compliance.

Q3: How long does it take between coats to dry?​​​​​​​

A: Surface drying takes 0.5–1 hour. Full cure takes 12–24 hours. Allow 4 hours between coatings. To guarantee bonding at low temperatures, extend this interval.

Q4: Does the substrate need rust prevention?

A: Yes, rust treatment is required. Remove rust, scaling, and corrosion from steel before applying. This ensures adherence and coating longevity.

Q5: Does the coating pass fire safety tests?

A: The coating usually passes fire safety assessments with adequate application thickness and documentation (test results, certificates of conformity, factory inspection records). We assist your inspection with the essential paperwork.

Partner with Experience and Expertise

You can get more from Henan Banggu Fire Technology Co., Ltd. than just goods. We give you peace of mind.

Our more than 30 years of experience making coatings means that our formulas are solid. We can get products and expert knowledge because we are in Changyuan City, which is known as China's "Capital of Anti-Corrosion."

We have permits for both land and sea transportation, which makes sure that operations work well both in the United States and abroad. Our OEM and ODM services are flexible enough to meet the needs of your project.

The most important thing is that we build relationships that last. "Quality Wins Customers, Reputation Creates Value, and Sincerity Builds Long-Term Cooperation" is our motto, and it guides everything we do.

Contact Us

Ready to protect your steel structures with Outdoor intumescent fire retardant coating for steel structure? Contact our technical team today at banggu@bgfireproof.com for product consultation and project support.