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    LHSH Swing Steel Fire Rated Door

    Our fire doors utilize Grade 80 Cold-Rolled Steel (CRS)

    Why Cold-Rolled Steel Dominates Fire Safety？  

    ① Structural Integrity Under Extreme Heat

    Microcrystalline Advantage: Ultra-fine grain structure (ASTM 7-8) resists warping at 1000°F (538°C) for 90+ minutes 

    Carbon Control: Precise 0.08% max carbon content prevents brittleness during thermal shock 

    ② Corrosion Defense System

    ✓ Z275 Galvanization: Dual-side 275g/m² zinc coating (EN 10346) 

    ✓ Chromate Conversion: Gold-iridescent passivation layer per MIL-DTL-5541F 

    ✓ Salt Spray Resistance: 1000+ hours white rust-free (ASTM B117)


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    LHSH Steel Fire Rated Door

    LHSH Steel Fire Rated Door

    Characteristics

    INTEGRATED SMOKE SEALS

    (COLD SMOKE SEALS AND INTUMESCENT STRIPS) EXPAND UNDER HEAT, SEALING THE GAPS AROUND THE DOOR TO PREVENT THE DEADLY PASSAGE OF SMOKE—THE LEADING CAUSE OF FIRE-RELATED FATALITIES.


    PROTECTS ESCAPE ROUTES

    MAINTAINS VISIBILITY, AND REDUCES HEALTH HAZARDS FROM TOXIC FUMES, SAFEGUARDING LIVES AND ASSETS.

    ROBUST CONSTRUCTION

    BUILT WITH A SOLID CORE OF MINERAL WOOL, VERMICULITE, OR REINFORCED STEEL, AND MOUNTED ON HIGH-GRADE, CERTIFIED HARDWARE (HINGES, LOCKS, AND CLOSING DEVICES).

    Certification Standard

    Intertek has conducted an evaluation for Shenzhen Longhui Sanhe Security Technology Co., Ltd. to determine the fire resistance performance on one fully glazed insulated single leaf double action steel composite fireproof door, model of BXGBLFHM 1024. The doorset is required to provide a fire separating function and was therefore tested in accordance with EN 1634-1:2014+A1:2018 'Fire resistance and smoke control tests for door, shutter and openable window assemblies and elements of building hardware.

    Technical data

    INSTALLATION METHODSingle/Double/Unequal Door
    		FIRE RESISTANCE   RATING
    MATERIALGalvanized SteelEN   Standards 
    FILLING MATERIALPerlite,   honeycomb paper, aluminum silicate cotton etc.EI30/EI60/EI90/EI120‌
    FIRE RATED TIME20 mins up to   180mins. (Integrity + Insulation for 30/60/90/120   minutes)
    SIZEUp to 9'-   5.7" x 10'-2.2" ft (height) | 2888 x 3104mm (height)BS   Standards
    DOOR LEAF SHEET22 Ga .- 18 Ga.   (/1.0/1.2 mm) galvanized steel sheetFD30/FD60/FD90/FD120‌
    DOOR FRAME SHEET16 Ga .- 14 Ga.   (1.5mm-2.0mm) galvanized steel sheet(Fire duration rating)
    SURFACE FINISHDoor leaf and   frame powder coated finish.GB   Standards
    OPENING DIRECTIONSwing Inward /   OutwardClass   A fireproof door
    COLORRAL color   system, could be customized as well.Fire   resistance insulation > =   1.5hours
    ACCESSORIESLock, handle,   hinges,door closer,panic bar and other as requested.Fire   resistance integrity > =   1.5hours
    VISION PANELWith or without   as requested. (Fire proof glass)Class   B fireproof door
    LITE FRAMEFrame type can   be customizedFire   resistance insulation > =   1.0hours
    LOUVERWith or without   as requested.Fire   resistance integrity > =   1.0hours
    FEATUREFire proof and   thermal insulation.Class   C fireproof door
    APPLICATIONbuilding   project, company, home, office, hotel, church, Just Anywhere you want!Fire   resistance insulation > =0.5   hours
    PACKAGEInside: PE paper   | Outside: double layers carton box and wooden pallets.Fire   resistance integrity > =0.5hours


    Common   Sizes of Fireproof Doors
    Class A/B/COne-leaf800*2400


    900*2400900*2500

    1000*24001000*23001000*2500
    1100*21001100*22001100*23001100*2400
    1200*21001200*22001200*23001200*2400
    1300*22001300   2300

    1400*23001400*2400

    1500*21001500*22001500*23001500*2400
    Double-leaf1200*2500


    1500*2400


    1500*25001500*27001500*2800
    1600*2400


    1700*2600


    1800*24001800*25001800*26001800*2700
    1900*24001900*25001900*26001900*2700
    1900*28002000*2500

    2100*24002100*25002100*27002100*3000
    2300*2300


    2200*22002200*2400

    2400*24002400*25002400*27002400*3000
    2500*2200


    2700*24002700*27002700*3000
    3000*30003100*3100

    Unequal1200*24001200*2500

    1500*23001500*2400

    Class A/B/COne-leaf900*2400900*2500

    1000*24001000*2500

    1100*22001100*23001100*24001100*2500
    1200*21001200*22001200*2300

    1200*2400



    Hardware

    FIRE DOOR HARDWARE IS AN INTEGRATED LIFE-SAFETY SYSTEM. 

    COMPONENTS WORK TOGETHER TO ENSURE THE DOOR CLOSES RELIABLY, 

    LATCHES SECURELY, AND SEALS EFFECTIVELY AGAINST SMOKE AND FLAMES DURING A FIRE.

    FIRE DOOR HARDWARE IS AN INTEGRATED LIFE-SAFETY SYSTEM. 

    COMPONENTS WORK TOGETHER TO ENSURE THE DOOR CLOSES RELIABLY, 

    LATCHES SECURELY, AND SEALS EFFECTIVELY AGAINST SMOKE AND FLAMES DURING A FIRE.

    Protect what matters most, designed to resist flames, smoke, and extreme heat, LHSH doors provide critical escape time while enhancing your security and aesthetic appeal. 30/60/90/120-min fire resistance, certified to delay fire spread, keeping your safety. Choose from modern, classic, or minimalist designs (wood, steel, glass options) from green-certified materials to smart fire solutions, we innovate because lives depend on it. LHSH steel fire doors are precision-crafted to provide superior fire resistance, security, and durability. Tested to withstand temperatures exceeding 1000°C, these doors deliver certified protection when every second counts.

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