Chongqing Rail Transit Line 10
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  • Chongqing Rail Transit Line 10
  • Chongqing Rail Transit Line 10

Chongqing Rail Transit Line 10

Case study: TCR Doors supplied heavy-duty metro station steel doors and fire-rated doors for Chongqing Rail Transit Line 10. View project details!
  • Product details
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    Project Case: Chongqing Rail Transit Line 10

    High-Performance Steel Fire Doors & Transit Utility Door Systems for Mountainous Metro Networks

    Our company engineered, manufactured, and supplied specialized fire-rated steel doors and heavy-duty subway utility doors for Chongqing Rail Transit Line 10, a vital backbone line in Chongqing's deep-underground and elevated mass transit network.

    Engineered to endure severe air-pressure shocks, high humidity, and continuous public passenger traffic, our steel door systems deliver uncompromised fire compartmentation, structural stability, and long-term reliability for complex urban transit infrastructure.

    Project Overview

    • Project Name: Chongqing Rail Transit Line 10

    • Location: Chongqing, China

    • Facility Type: Mass Transit Underground Railway & Transportation Hub

    • Product Scope: Custom Fire-Rated Steel Doors, Pressure-Resistant Service Doors, Emergency Escape Doors, and Stainless Steel Access Assemblies

    • Key Application Areas: Station Lobbies, Platform Tunnels, Traction Substation Rooms, Ventilation Shafts, and Emergency Passenger Escape Passages

    Key Challenges & Engineered Solutions

    1. High Piston Air Pressure & Deep-Underground Conditions

    • Challenge: High-speed trains navigating deep underground tunnels generate intense cyclic air-pressure shocks (piston effect) that strain door leaves and frame anchors.

    • Solution: We manufactured heavy-duty double-skin galvanized steel doors reinforced with internal steel channel stiffeners to resist recurring pressure fluctuations without structural fatigue or latches failing.

    2. Certified Underground Fire Protection & Smoke Sealing

    • Challenge: Underground metro stations demand maximum fire containment and zero-smoke leakage to safeguard critical evacuation corridors during emergencies.

    • Solution: Supplied 60-minute to 120-minute fire-rated steel doors equipped with high-expansion intumescent smoke gaskets, heavy-duty panic push bars, and certified automatic door closers.

    3. Humidity & Corrosion Endurance

    • Challenge: High ambient moisture in underground rail tunnels accelerates surface oxidation and structural rusting.

    • Solution: Applied specialized multi-layer anti-corrosion primers and heavy-duty electrostatic powder coatings, ensuring long service life with minimal maintenance demands.

    Key Project Accomplishments

    • CNC Precision Manufacturing: Built with advanced CNC laser cutting and automated bending systems for exact dimensional alignment in complex underground civil structures.

    • Transit Safety Certification: All door assemblies successfully passed rigorous municipal transit authority testing for fire resistance, acoustic isolation, and pressure endurance.

    • Comprehensive OEM/ODM Service: Managed full-lifecycle support, from CAD drawing customization and hardware prep to batch delivery schedules matching site construction phases.

    Partner with a Trusted Global Steel Door Manufacturer

    From deep-level metro networks and airport hubs to heavy industrial plants and hospital infrastructure projects, we provide certified OEM/ODM steel door solutions engineered to global standards. Contact our technical team today for CAD drawings, product specifications, and factory-direct quotes.


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Technical Knowledge Base

Q

What is the main difference between UL 10C and EN 1634 steel fire door standards?


A

UL 10C and EN 1634 differ primarily in testing methodology and regional acceptance: UL 10C is the positive pressure fire test standard widely used in North America and GCC countries, while EN 1634 is the European standard evaluating fire resistance and smoke control for Europe and Asia.
Testing Method: UL 10C requires mandatory hose stream impact testing; EN 1634 tests both fire integrity (E) and thermal insulation (EI) parameters.
Fire Ratings: UL ratings range from 20 to 180 minutes (3 hours); EN ratings are classified as 30, 60, 90, or 120 minutes.
Regional Usage: Choose UL 10C for Saudi/GCC projects following NFPA guidelines; select EN 1634 for European and British-standard-aligned project specifications.

Q

How long can commercial steel fire doors withstand direct high temperatures?


A

Commercial steel fire doors are engineered to withstand direct high-temperature fire exposure from 20 minutes up to 180 minutes (3 hours), depending on the internal core material, gauge of galvanized steel, and certified testing standard.Fire RatingCore TypeTypical Commercial Applications60 Minutes (1 Hour)Honeycomb / Mineral WoolOffice corridors, residential stairwells, hotel rooms90 Minutes (1.5 Hours)Mineral Wool / PerliteHospital corridors, cleanrooms, commercial utility rooms120–180 Minutes (2–3 Hours)High-Density Mineral WoolIndustrial warehouses, transformer rooms, high-risk fire zones

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