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China Suppliers Factory for Steel Fireproof Doors: Defying Flames, Protecting Lives with Superior Fire Resistance
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China Suppliers Factory for Steel Fireproof Doors: Defying Flames, Protecting Lives with Superior Fire Resistance

Steel fire-rated doors are robust doors manufactured from high-strength steel in China, designed to deliver exceptional fire resistance and smoke control across various buildings. As a reliable choice from reputable suppliers, these doors play a crucial role in preventing the spread of flames and smoke, ensuring safe evacuation for occupants. Widely utilized in commercial buildings, industrial facilities, hospitals, schools, and public spaces, they come with high fire ratings and outstanding durability. Choose our factory's steel fire-rated doors for unmatched protection and safety in your establishment

    PRODUCTS DETAIL

    Steel insulated fire-rated door specification
    Steel fire-rated door design and structure
    Material: Steel-insulated fire-rated doors are crafted from premium galvanized steel sheets, with the door leaf filled with fire-rated insulation material.
    Features: Reasonable structure, smooth and aesthetically pleasing surface, fire-rated, corrosion-resistant, and oxidation-resistant, effectively inhibiting fire spread.
    Available Colors/Specifications: Customizable.
    Opening Modes: Single-leaf, double-leaf, and unequal-leaf configurations.
    Applications: High-end buildings, hotels, restaurants, hospitals, industrial plants, shopping centers, entertainment venues, etc.
    Specialized Product: Extra-large steel fire-rated doors (3M x 3M), ideal for warehouses and industrial facilities, facilitating easy access for trucks.

    TECHNICAL SPECIFICATIONS

    No. Component Name Model/Specification
    1 Door Leaf Material: 0.8mm galvanized steel plate
    Thickness: 50mm
    Core Material: High-density, environmentally friendly Fireproof core board
    2 Door Frame Material: 1.2mm galvanized steel plate
    Structure: One-time forming structure
    3 Hinge Plate Thickness: ≥3.0mm
    4 Surface Treatment Electrostatic powder spraying
    Wood-grain transfer printing for surface finish
    5 Fire Resistance Performance Class A: ≥1.5 hours
    Class B: ≥1.0 hour
    Class C: ≥0.5 hour
    6 Thermal Insulation Grade Grade: 4
    7 Compliance Standard GB12955-2015 Fireproof Door
    8 Non-removable Component Thickness Thickness: ≥1.2mm
    9 Reinforced Structural Component Thickness Thickness: ≥3.0mm

    PRODUCT FEATURES

    Outstanding Fire Resistance

    Manufactured according to National Standards, steel fire-rated doors come with various fire ratings (e.g., Class A, B, C), capable of withstanding high temperatures for over 210 minutes and effectively preventing fire spread.

    Excellent Smoke Sealing

    The sealed design of the door frame and leaf, along with high-temperature expansion sealing strips, ensures effective smoke control during a fire, reducing harm caused by toxic fumes.

    Durable and Robust

    Made with cold-rolled steel plates, offering high compressive and impact resistance while effectively withstanding external forces, thereby extending the service life.

    Multi-Layer Structure Design

    Filled with proprietary patented fireproof materials (e.g., magnesium oxide, magnesium chloride), enhancing fire resistance, corrosion resistance, and soundproofing for a balance between safety and comfort.

    Aesthetic Appearance

    Steel fire-rated doors can be customized with various surface treatments (e.g., powder coating, transfer printing) to blend seamlessly with diverse architectural and interior styles.

    Convenient Installation and Maintenance

    Professionally designed installation process for fast and easy setup; minimal maintenance required without complicated routines.

    STRUCTURAL COMPONENTS

    Door Frame

    Made from cold-rolled steel, ensuring stability and safety.

    Door Leaf

    Typically consists of double-layered steel sheets filled with proprietary patented fireproof materials (e.g., magnesium oxide, magnesium chloride) for enhanced fire and corrosion resistance.

    Sealing Strips

    Positioned at the interface between the door frame and leaf; expands under high temperatures to block smoke and flame penetration.

    Locks and Hinges

    Equipped with high-temperature-resistant locks and hinges, ensuring smooth operation and enhanced security.

    How to Choose the Right Steel Fire-Rated Door?

    Choosing the appropriate steel fire-rated door is crucial for ensuring fire safety in buildings. Here are some key factors to consider:

    Fire Rating
    Understanding Fire Ratings:
    Based on National Standards, fire-rated doors are categorized into Class A (120 minutes), Class B (60 minutes), and Class C (30 minutes). Select the rating according to the building’s fire safety requirements.
    Applications:
    For public spaces with high foot traffic, Class A doors are recommended. For general passageways or storage rooms, Class B or C may suffice.
    Material and Structure
    Door Leaf Material:
    Opt for high-strength cold-rolled or hot-rolled steel sheets for durability and impact resistance. Fireproof materials like rock wool enhance fire performance.
    Sealing Design:
    Ensure proper sealing between the door frame and leaf. High-temperature expansion sealing strips significantly improve smoke and flame resistance.
    Standards and Certifications
    Check Certifications:
    Verify compliance with national and industry standards (e.g., Building Fire Protection Code, Steel Fire-Rated Doors). Request quality inspection reports from suppliers.
    Brand Reputation:
    Prefer reputable brands known for quality and after-sales support.
    Installation Requirements
    Professional Installation:
    Ensure installation is performed by qualified professionals to maintain performance and sealing. Look for suppliers that offer installation services.
    Compatibility:
    Confirm door dimensions align with the building’s door frame for proper fit.
    Design and Aesthetics
    Surface Treatment:
    Select finishes (e.g., coating, lamination) for visual appeal and corrosion resistance.
    Color and Style:
    Match the door’s design to the overall architectural style for seamless integration.
    Budget and Cost-Effectiveness
    Price Considerations:
    Balance quality and cost. While high-quality fire-rated doors may have a higher upfront cost, they reduce long-term maintenance and replacement expenses.
    Value for Money:
    Evaluate fire resistance, materials, installation services, and other features to select a cost-effective product.
    After-Sales Service
    Warranty Policies:
    Understand the warranty terms, including coverage duration and details.
    Maintenance Support:
    Choose suppliers offering regular maintenance and inspection services to ensure long-term safety.
    By considering factors such as fire rating, materials, installation, design, budget, and after-sales support, you can confidently select a steel fire-rated door tailored to your needs, ensuring safety for life and property.

    Frequently Asked Questions (FAQ)

    What materials are used to construct these fire-rated doors?
    The door leaf is constructed with a 0.8mm galvanized steel plate and filled with high-density, environmentally friendly fireproof core board. The door frame is made from a 1.2mm galvanized steel plate featuring a one-time forming structure.
    What are the fire resistance ratings of your steel doors?
    Our steel fire-rated doors are classified into three levels of fire resistance performance:
    • Class A: ≥1.5 hours (capable of withstanding high temperatures for over 210 minutes)
    • Class B: ≥1.0 hour
    • Class C: ≥0.5 hour
    How do the doors prevent toxic smoke from spreading?
    The doors are engineered with high-temperature expansion sealing strips positioned at the interface between the door frame and the door leaf. Under high temperatures, these strips expand to effectively seal off and block smoke and flame penetration.
    Do you offer extra-large sizes for industrial applications?
    Yes. We offer specialized extra-large steel fire-rated doors measuring up to 3M x 3M. These are ideal for warehouses and industrial facilities to facilitate easy and safe access for trucks.
    What opening configurations and customization options are available?
    Our doors are available in single-leaf, double-leaf, and unequal-leaf configurations. Colors and specifications are fully customizable, and we offer various surface treatments including electrostatic powder spraying and wood-grain transfer printing.
    Where are these steel fire-rated doors typically used?
    They are widely applied in high-end buildings, hotels, restaurants, hospitals, industrial plants, shopping centers, entertainment venues, warehouses, and industrial facilities.

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