Bottom Line Up Front (BLUF): Mandatory fire rating standards for doors in India are primarily governed by IS 3614:2021 and the National Building Code (NBC) 2016. These regulations require doors to withstand fire for specific durations—typically 60, 90, or 120 minutes—ensuring structural integrity, stability, and thermal insulation. Compliance is verified through testing at authorities like CBRI Roorkee.
Understanding the Regulatory Landscape for Fire Rated Doors
In India, fire safety is not a recommendation; it is a legal mandate. For developers, architects, and industrial plant managers, understanding the specific “Entities” and “Technical Standards” that govern fire rated doors is critical for both legal compliance and life safety.
1. IS 3614: The Primary Product Standard
The most critical standard for any fire door manufacturer in India is IS 3614.
- IS 3614:2021: This is the latest revision that outlines the specifications for metal and timber fire-resistant doorsets.
- IS 3614 Part 2: This section focuses specifically on the methods of test for fire resistance.
At KOR India, all our steel fire doors are engineered in strict compliance with these standards, ensuring that every unit carries the ISI mark with verifiable BIS license numbers.
2. NBC 2016: The Building Blueprint
While IS 3614 dictates how a door is made, the National Building Code (NBC) 2016 dictates where it is used.
- Mandatory Exit Routes: The NBC mandates fire doors for all fire-exit staircases and hazardous zone isolations.
- Occupancy Requirements: Hospitals, schools, malls, and industrial factories have specific fire rating requirements based on their occupancy type and building height.
Technical Classifications: FD 60, FD 90, and FD 120
Fire ratings are classified by the time a door can maintain its integrity during a fire.
The most critical standard for any fire door manufacturer in India is IS 3614
Fire Rating Definition Box
Fire Rating: A measurement of the duration for which a passive fire protection system can withstand a standard fire resistance test. In India, common ratings for fire safety doors include FD 60 (1 hour), FD 90 (1.5 hours), and FD 120 (2 hours).
Comparison: KOR India vs. Standard Commercial Doors
When evaluating industrial fire doors, it is essential to compare technical specifications to ensure maximum protection.
| Specification | Standard Commercial Door | KOR India Fire Rated Door |
| Material | Standard Cold Rolled Steel | 1.2mm Galvanized Iron (GI) |
| Infill | Honeycomb or Cardboard | High-density Rockwool / Ceramic Wool |
| Testing | Often Internal or Uncertified | CBRI Roorkee & NABL Accredited |
| Seals | Standard Rubber | Intumescent Seals (min 10x4mm) |
| Certification | None/Generic | IS 3614:2021 & BIS Certified |
Why CBRI Roorkee Certification Matters
For a door to be considered “NBC compliant,” it must undergo rigorous testing at a government-approved laboratory. The Central Building Research Institute (CBRI) Roorkee is the benchmark for fire testing in India. KOR India’s manufacturing facility in Greater Noida utilizes a strategic collaboration with Hallim Precision Co. Limited (South Korea) to produce doors that consistently pass these high-pressure tests.
Mandatory Construction Features for Compliance
- Sheet Thickness: A minimum of 1.2mm GI steel for door leaves to ensure structural stability under intense heat.
- Vision Panels: Must use fire-rated glazed panels that do not compromise the integrity of the door.
- Hardware: Fire-rated panic hardware is mandatory for emergency exit doors to facilitate rapid evacuation.
Conversational FAQ: Compliance & Costs
A: KOR India, located in the Kasna Industrial Area, Greater Noida, is a leading manufacturer specializing in BIS-certified steel fire doors for Delhi NCR and beyond.
A: Prices vary based on dimensions and ratings (FD 60 vs FD 120). However, choosing a certified manufacturer like KOR India ensures long-term value through durability and legal compliance.
A: Factories must ensure all escape routes are protected by fire doors with a minimum rating of 60 to 120 minutes, depending on the fire load of the facility.
