Steel Structure Fireproof Coatings GT-NSP/WSP Series

General Description

This series of steel structure fireproof coatings includes two types: intumescent and non-intumescent, each divided into different grades based on fire resistance performance. The model designations follow the guidelines below:

Ft Series (Special Steel Structure Fireproof Coatings)
Application Scenarios: Petrochemical, power facilities, nuclear power plants, and other special environments requiring resistance to high temperatures, corrosion, and other harsh conditions.
Model Examples:
- Ft1.5: Fire resistance limit of 1.5 hours
- Ft2.0: Fire resistance limit of 2.0 hours
Fp Series (General Steel Structure Fireproof Coatings)
Application Scenarios: General civil or industrial buildings (e.g., shopping malls, office buildings, factories).
Model Examples:
- Fp1.0: Fire resistance limit of 1.0 hours
- Fp2.0: Fire resistance limit of 2.0 hours

Intumescent Steel Structure Fireproof Coating

1. Overview

This product is a single-component, thin-film, water-based intumescent fireproof coating designed for steel structures. It combines advanced fire-retardant technology with environmental compatibility, making it suitable for both indoor and outdoor applications, particularly in harsh weather conditions. It expands up to 50 times when exposed to fire, forming an insulating char layer that provides up to 2.5 hours of fire resistance (standard fires) or 2.0 hours (hydrocarbon fires).

2. Product Features

Exceptional Water Resistance: Maintains integrity without blistering or peeling when exposed to water, enabling outdoor construction during rainy seasons.
Superior Fire Retardancy:
- Ordinary fire resistance: Up to 2.5 hours.
- Hydrocarbon fire resistance: Up to 2.0 hours.
High Expansion Ratio: Expands up to 50 times when heated, forming a dense char layer to inhibit heat transfer.
Eco-Friendly: Zero VOC emissions, non-toxic, and releases no harmful gases during combustion.
Excellent Workability: Achieves a single-pass dry film thickness of 1.5mm, reducing construction time and costs.

3. Recommended Applications

Primary Use: Fire protection for steel columns, beams, supports, floors, and steel profiled sheets in steel structures.
Industry Applications: Petrochemical facilities, metallurgical and power industries, civil steel buildings, stadiums, airports, railway stations, shopping malls, and industrial plants.
Fire Scenarios: Suitable for both ordinary cellulose fires and special hydrocarbon fires.

4. Technical Specifications

Color: White (custom colors available upon request)
Surface Finish: Matte
Component Type: Single-component (ready-to-use)
Specific Gravity: Approximately 1.2 kg/L
Volume Solids: 67% (theoretical value)
Theoretical Coverage: 0.45 m²/L (based on 1.5mm dry film thickness)

Fire Resistance Data:

Fire Resistance	Film Thickness (μm)	Theoretical Usage (kg/m²)
Ft1.5	3640	6.53
Ft2.0	4440	7.94
Fp1.5	2140	3.83
Fp2.0	3100	5.56
Fp2.5	4240	7.58

Application Methods: Brush coating, air spraying (using construction paint spray guns), mortar spraying
Tool Cleaning: Water
Drying Time: Surface dry: ~2 hours (@23℃, 50% relative humidity)
Recommended Primer: Epoxy primer or as specified by project requirements
Environmental Temp: Min. 5℃, Max. 50℃; avoid application at relative humidity >85%
Substrate Temp: Min. 3℃ above dew point

Storage & Shelf Life: Store at 0–38℃ in cool, ventilated areas; shelf life: 12 months (sealed).

5. Application Guidelines

Surface Preparation

Ensure the steel substrate is clean, dry, and free of dust, oil, rust, and other contaminants.
Apply a compatible primer (e.g., epoxy primer) to enhance adhesion.

Mixing

Stir thoroughly until fully homogeneous and free of lumps.
If the coating is too thick, dilute with water moderately (excessive water may reduce anti-sag properties and curing efficiency).

Application Methods

Brush/Air Spraying: Suitable for small areas or touch-ups.
Mortar Spraying (Preferred): Recommended for large-scale projects due to high efficiency (the product contains solid particles and requires no special atomization conditions).
Unsuitable Methods: Airless spraying and roller coating.

Recoating Interval (1.5mm Dry Film Thickness)

Environmental Temperature	5℃	10℃	20℃	30℃	40℃
Touch Dry	24 hours	8 hours	3 hours	1 hour	0.5 hour
Full Cure (RH 30%)	28 days	14 days	7 days	5 days	2 days
Minimum Recoating Interval	24 hours	8 hours	3 hours	1 hour	0.5 hour
Maximum Recoating Interval	No limit	No limit	No limit	No limit	No limit

6. Safety Measures

Wear protective gloves, goggles, and a mask to avoid skin/eye contact and inhalation of paint mist.
Ensure adequate ventilation during application.

7. Packaging & Storage

Packaging: 25 kg/drum.
Storage: Store at 0–38℃ in cool, ventilated areas; Prevent freezing. 12-month shelf life in sealed containers.

8. Disclaimer

The information herein is based on reliable formulation data, but actual performance may vary due to uncontrollable application conditions. This product is intended for professional use only. For technical support or inquiries, please contact our Technical Support and Customer Service Center.

Performance data are based on laboratory conditions. Field testing is required prior to full-scale application.

Non-Intumescent Fireproof Coating for Structural Steel

1. Overview

This product is an eco-friendly fireproof coating formulated with inorganic thermal insulation materials, inorganic binders, and flame-retardant additives. It is non-toxic, pollution-free, odorless, non-corrosive, and asbestos-free, making it suitable for both indoor and outdoor fire protection of steel structures.

2. Product Features

Exceptional Fire Resistance: Achieves 3+ hours of fire rating (ASTM E119).
Weatherproof Performance: Resists UV, acid/alkali exposure (360h), salt spray (30 cycles), and freeze-thaw cycles (15 cycles).
Acoustic Benefits: Reduces noise in steel structures, enhancing acoustic comfort.
Efficient Application: Sprayable or trowel-applied with single-pass thickness of 10–15mm (no sagging/cracking).
Rapid Curing: Short drying time accelerates construction progress.
Broad Compatibility: Works with anti-corrosive primers, intermediate/topcoats, and crack-resistant fillers.

3. Recommended Applications

Primary Use: Fire protection for outdoor load-bearing steel structures, including chemical equipment, large factory buildings, high-rise buildings, cable trays, and steel structures in petrochemical, metallurgical, residential, and airport projects.
Key Environments: Harsh outdoor conditions requiring long-term durability and fire safety.

4. Technical Specifications

State in Container: Uniform, thick fluid without lumps after stirring
Surface Dry Time: Approximately 16 hours
Early Drying Cracking Resistance: No cracks
Bond Strength: 0.15 MPa
Compressive Strength: 0.8 MPa
Dry Density: ≤650 kg/L
Chemical Resistance:

Acid/Alkali Resistance: No delamination, peeling, or cracking after 360 hours of testing.
Heat Exposure Resistance: No delamination, peeling, hollowing, or cracking after 720 hours of testing.
Damp Heat Resistance: No delamination or peeling after 504 hours of testing.
Freeze-Thaw Cycle Resistance: No delamination, cracking, peeling, or blistering after 15 cycles.
Salt Spray Corrosion Resistance: No blistering, deterioration, or softening after 30 cycles.
UV Radiation Resistance: No delamination, cracking, or powdering after 60 cycles.

Fire Resistance & Application Data:

Fire Resistance	Coating Thickness	Reference Usage (kg/m²)
1.5h	18 mm	10–12
2.0h	24 mm	15–17
2.5h	30 mm	20–22
3.0h	35 mm	25–27

5. Packaging:

Adhesive: 20 kg/plastic bucket
Fireproof coating: 25 kg/woven bag
Storage Conditions: Store at 5–35℃ in dry, ventilated indoor areas; protect from rain, direct sunlight, and moisture. Keep off the ground to prevent caking.

6. Application Guidelines

Process Flow

Steel structure surface treatment and protection → Coating mixing → First base coat → Layered spraying of non-intumescent fireproof coating (mesh reinforcement recommended for thickness >25mm)

Surface Preparation & Protection

Cleaning: Thoroughly remove dust, rust, and oil from the steel surface. Repair damaged or uncoated areas with two coats of anti-rust paint.
Masking: Protect the construction area (floors, walls, equipment, pipes) with tarpaulin before spraying.

Mixing

First Base Coat:
- Mix ratio: Dry powder : Adhesive : Water = 100 : 30 : 70–80 (by weight).
- Stir in a mixer: Add water first, then adhesive, then dry powder. Mix for 5–8 minutes until uniform (adjust water content for climate).
Subsequent Coats:
- Mix ratio: Dry powder : Water = 1 : 1 (by weight).
- Stir thoroughly for 5–8 minutes, adjusting water for consistency.

Spraying

First Coat: Spray 2–3mm thickness using a gravity-fed spray gun (nozzle diameter 8–10mm) at 0.6–0.8MPa pressure, held 30–50cm from the surface. Allow full drying before subsequent coats.
Subsequent Coats: Spray 8–10mm per layer. Apply the next coat after the previous layer is surface dry. Continue until the required thickness is achieved.

Mesh Reinforcement (for thickness ≥30mm)

Fiberglass Mesh: Apply immediately after the second coat, pressing it into the wet coating. Proceed to the third coat after surface drying.
Steel Mesh: Pre-install adhesive anchors (16–20 anchors/m²) before construction. Apply the base coat, let it dry, then install the mesh and continue spraying.

Precautions

Winter Construction: Stop work at temperatures <5℃. Use greenhouse protection to prevent freezing before the coating cures.

Safety Measures

Wear protective gloves, goggles, and a dust mask to avoid skin/eye contact and inhalation of coating particles.
Ensure good ventilation during application.