1. Core Fire-Prevention Technologies

Employing a composite flame-retardant structural process:

Substrate treatment:

Cold-rolled steel sheets (thickness ≥ 1.2 mm) undergo degreasing and phosphating pretreatment.

Intumescent fire-resistant coating with inner and outer layers (expands over 500% upon exposure to fire)

Structural Design:

Double-layered hollow insulation layer (filled with ceramicized silicate)

Install fire-resistant partitions at the junctions (to prevent flame spread).

II. Core Performance Metrics

Key Parameters, Standard Values, Testing Standards

Fire-resistance rating: 90/120/180 minutes (optional grading available), per GB 9978

Fire Performance: Flame Retardant Class A1 (Non-combustible Material) – GB 8624-2012

Smoke Toxicity Class AQ1 (No Toxic Smoke Emission), GB/T 20285

Insulation strength ≥3kV (breakdown voltage of the flame-retardant layer), IEC 60695

3. Structural Design Standards

Fire compartment design:

mermaid

Copy Code

graph LR

A [Fire-Resistant Cable Tray] --> B (Install fire barriers every 30 meters)

B --> C [Firewall panel thickness ≥ 6mm]

C --> D [Fill with fire-rated sealant]

Load rating (according to GA/T 537):

Class 1 Fire Protection: Supports ≥200 kg/m (fire resistance of 120 minutes)

Class 2 Fire Resistance: Supports ≥150 kg/m (Fire-rated for 90 minutes)

Connecting system:

Fire-resistant bolts (temperature resistance ≥1000°C)

Grounding copper strip (cross-sectional area ≥ 16 mm²)

4. Scenario-Based Application Solutions

High-Risk Scenarios: Fire Prevention Solutions

180-Minute Fire-Resistant + Vibration-Resistant Structure for Metro Tunnels

Data center: Halogen-free flame retardant (prevents equipment corrosion)

Explosion-Proof Zone in Chemical Plant: Fireproof + Antistatic Coating (Surface Resistance ≤ 10⁸ Ω)

Commercial Complex: Concealed Installation + Decorative Topcoat (Custom RAL Color Codes)

5. Comparison with Standard Galvanized Cable Trays

Features: Fireproof Cable Trays vs. Galvanized Cable Trays (Comparison)

Core features: Fire-resistant, heat-insulating—but only corrosion-proof.

Fire Response: The expanding char layer isolates oxygen, while the zinc coating melts (melting point: 419°C).

Smoke control: Smoke density ≤15% (significantly lower than the national standard of 75%), with no smoke control capability.

Life-cycle cost, maintenance-free (no coating degradation issues), but requires regular anti-corrosion maintenance.

6. Key Points for Project Implementation

Certification requirements:

A type test report must be provided (including the GB 9978 fire-resistance test).

Mandatory CCC Certification (for wire and cable conduit products)

Installation guidelines:

Install fire-stopping systems at wall/ceiling penetrations (in conjunction with fireproofing bags or sealants).

Thermal expansion compensators are provided every 20 meters along straight sections.

Enhanced for Special Scenarios:

Nuclear Power Engineering: Adding Stainless Steel Wire Mesh Reinforcement Layer (Impact-Resistant)

Moisture-prone environments: Apply epoxy moisture-resistant primer (adhesion ≥ 5 MPa)

Extreme test data:

After a 30-minute exposure to a 1200℃ flame, the internal temperature of the bridge structure remained ≤140℃ (measured).

After the water gun impact test, the fire-resistant coating showed no delamination (compliant with UL 1709).