Class B Fire Door: Reliable Safety and Proven Performance

Introduction

In the construction industry, Class B fire doors are one of the most frequently specified fire protection solutions. These doors are designed to provide 60 minutes of fire resistance, making them essential for both residential and commercial buildings. A Class B fire door not only delays fire spread but also helps maintain safe evacuation routes. YK Door Industry, a leading Chinese manufacturer, has supplied Class B fire doors for hospitals, shopping centers, and large-scale residential projects worldwide.

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What Defines a Class B Fire Door?

A Class B fire door is tested to withstand fire for at least 60 minutes, in line with Chinese GB standards and equivalent to certain international benchmarks. Compared to Class A doors (90–120 minutes), Class B provides a balance between safety and cost, which makes it ideal for schools, apartment blocks, and office complexes.

For instance, in a residential development in Kunming, Yunnan Province, YK Door Industry installed more than 400 Class B wooden fire doors, ensuring that corridors and stairwells maintained fire integrity during inspections. These installations not only complied with local building codes but also earned praise from contractors for reliable delivery and consistent quality.

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Material Options and Construction

Class B fire doors can be manufactured using different core and skin materials depending on project needs:

• Steel Fire Doors: Offer maximum durability for industrial and commercial buildings.

• Wooden Fire Doors: Preferred in hotels and apartments for aesthetic appeal.

• Composite Doors: Combine steel and fireproof cores, balancing performance and design flexibility.

YK Door Industry often uses galvanized steel frames with fire-resistant cores in large shopping malls, while in luxury hotels they supply wood veneer fire doors that meet Class B resistance but retain high-end finishes.

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Standards and Certifications

Contractors and procurement managers need assurance that fire doors meet testing standards. Class B doors from YK Door Industry are certified under:

• GB 12955-2008 (China National Standard)

• EN 1634 (European fire resistance test)

• UL 10C (U.S. fire endurance test)

During a school project in Nairobi, Kenya, YK provided Class B steel fire doors with dual GB and CE certification, which satisfied both local inspectors and international project consultants. This dual compliance illustrates the versatility of YK’s production capability.

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Applications of Class B Fire Doors

Class B fire doors are commonly installed in:

• Residential apartments – securing stairwells and common areas.

• Hospitals and clinics – separating treatment zones from emergency exits.

• Educational facilities – protecting classrooms and corridors.

• Office complexes – maintaining compartmentalization in multi-tenant spaces.

In one project, a 20-story office building in Guangzhou integrated YK’s Class B steel doors at each emergency exit, ensuring that evacuation routes remained safe for at least 60 minutes, allowing both employees and visitors time to escape.

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Advantages of Working with YK Door Industry

1. Wide Product Range – Steel, wood, and composite fire doors to suit different projects.

2. Customization – Ability to manufacture oversized or glass-panel Class B doors.

3. International Compliance – Products meet UL, CE, and BS certifications.

4. Cost Efficiency – Factory-direct pricing from China ensures value for procurement managers.

5. Global Experience – YK has supplied Class B fire doors to projects in Asia, Africa, and Europe.

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Summary Table: YK Class B Fire Doors

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FAQ for Distributors, Procurement Managers, and Contractors

Q1 (Distributor): What is the demand for Class B fire doors in global markets?
Class B fire doors are widely used in mid-rise buildings and schools, making them a high-volume product suitable for distributors looking to expand their catalog.

Q2 (Procurement Manager): Can I request mixed orders of Class A and Class B fire doors?
Yes. YK Door Industry frequently supplies mixed shipments to contractors who need different fire ratings across one project.

Q3 (Contractor): Are Class B fire doors suitable for industrial applications?
While possible, contractors often choose Class A doors for industrial sites. Class B doors are better suited for commercial, residential, and educational projects.

Q4 (Real Estate Developer): How can Class B doors balance safety and cost?
Class B doors provide essential 60-minute protection while being more cost-effective than Class A, making them attractive for large housing projects.

Q5 (Contractor): Do Class B doors require special hardware?
Yes. They must be installed with fire-rated hinges, closers, and seals. YK Door Industry manufactures and supplies complete hardware kits for seamless installation.

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Conclusion

A Class B fire door provides an effective combination of safety, compliance, and affordability. By working with YK Door Industry, real estate developers, distributors, and contractors gain access to certified products backed by global project experience. Whether for residential apartments, schools, or commercial complexes, YK ensures that every Class B fire door offers trusted fire resistance and long-term reliability.