KD-NSP-FP2.00-SB-2 Indoor Intumescent Steel Structure Fire Retardant Coating

Description

Product Overview

GT-NSP-Fp2.00-SB-2 is a water-based Indoor Intumescent Fire Retardant Coating for Steel, engineered to deliver superior fire protection with minimal thickness. As an eco-friendly solution, it combines exceptional adhesion, thin-film application, and decorative appeal, making it ideal for safeguarding indoor steel structures in commercial and industrial settings. When exposed to high temperatures, this intumescent fireproof paint expands to form an insulating char layer, effectively delaying heat transfer and structural collapse while maintaining aesthetic integrity.

Key Features & Compliance

This steel fireproof coating meets rigorous fire safety standards (Certifications A & B) and is compatible with epoxy zinc-rich primers and intermediate coatings. Its water-based formula ensures low VOC emissions, aligning with green building requirements. Recommended for steel beams, columns, and trusses, it supports brush or roller application and can be reinforced with alkali-free fiberglass mesh for enhanced durability in critical areas.

Surface Preparation & Application Guidelines

1. Surface Treatment

New Steel Structures: Sandblast to remove rust, then apply an epoxy zinc-rich primer + epoxy micaceous iron oxide intermediate coat.
Galvanized Steel: Must be treated with an epoxy transition coat for adhesion.
Old Steel/Repainted Surfaces: Clean thoroughly; reapply anti-corrosion coating if existing paint is damaged.
Always inspect for dust, oil, cracks, or welding defects before application.

2. Coating Application

Stir with an electric mixer until uniform. If too thick, add ≤5% neutral water.
Apply via brush or roller in crisscross layers (≤0.2mm dry film thickness per layer).
Maintain ambient conditions: 5–35°C, ≤80% humidity.
Allow ≥12 hours between coats. At 1.5mm dry thickness, embed alkali-free fiberglass mesh (5–10cm overlap) for reinforcement.

3. Cautions

Avoid rain, immersion, or direct sunlight during/after application.
No tinting service; use compatible topcoat for color customization.
Transport/store at >0°C (storage temperature >5°C).
Do not mix with other coatings.
Construction team spraying GT-NSP-FP2.00-SB-2 intumescent fire retardant paint onto steel beams in a 200m-high office tower core, achieving uniform 2.00mm dry film thickness to meet 120-minute fire resistance rating (GB 50016-2014) for critical load-bearing structures.
Quality inspection of activated GT-NSP-FP2.00-SB-2 coating after fire test at a metro station, showing 15x foam expansion protecting steel columns, with ultrasonic thickness gauge verifying compliance with EN 13381-8 Class H2 standards for public infrastructure.
Project Case: Chengdu Tianfu International Airport Fireproof Coating Application
The Chengdu Tianfu International Airport project (2019-2020) implemented advanced fireproof coatings, including STI-A, SB-2, and BTICB-1, across its 107,000-square-meter terminal steel structure. Our solutions provided critical 2-hour fire resistance for load-bearing components, meeting CAAC and GB 50016-2014 standards while withstanding high humidity conditions. This landmark aviation project demonstrates our expertise in delivering high-performance fire protection for mega-transportation hubs.
Project Case: Xi’an Silk Road International Conference Center Fireproof Coating Application
The Xi’an Silk Road International Conference Center project (2019-2020) utilized STI-A, SB-2, and BTCB-1 fireproof coatings to protect its structural steel components, ensuring 120-minute fire resistance for critical load-bearing elements. Our solutions complied with GB 50016-2014 standards while maintaining aesthetic requirements for this high-profile international venue. This project highlights our capability to deliver reliable fire protection for culturally significant infrastructure.