Fire-Rated Steel Sandwich Panels

-- Steady & Reliable Manufacturer --

Introduction

Fire-Rated Steel Sandwich Panels are crucial for construction where fire safety regulations are paramount. These panels use non-combustible cores, typically Rockwool (Mineral Wool) or high-grade PIR (Polyisocyanurate), sandwiched between pre-painted steel skins. Unlike standard EPS or PU panels, fire-rated cores restrict the spread of flames, maintain structural integrity, and minimize smoke generation, often achieving fire resistance ratings of up to 120 minutes (EI120). Specifying the correct fire rating is a legal requirement in many commercial and industrial projects, such as factories, hospitals, and high-occupancy buildings.

We provide panels fully certified to relevant European (EN), North American (ASTM), and regional fire standards.

Specifications

Parameter	Value/Range
Core Material	Rockwool (Mineral Wool) or High-Density PIR
Fire Resistance Rating	EI 30, EI 60, EI 90, EI 120 (Integrity and Insulation in minutes)
Non-Combustibility	Rockwool is classified as A1/A2
Panel Thickness	100mm, 150mm, 200mm (Required thickness increases with rating)
Steel Skin	PPGI/PPGL (0.5mm minimum recommended)
Joint System	Hidden fastener, tight tongue-and-groove joint for smoke sealing.
Acoustic Performance	Excellent (Especially Rockwool panels)

Certification: The EI rating confirms both Integrity (E) against collapse and Insulation (I) against heat transfer, key for safe evacuation.

Application

Firewalls and Compartments: Internal partitions in large warehouses and factories.
Industrial Kitchens: Wall and ceiling linings that must meet strict hygiene and fire codes.
High-Occupancy Buildings: Hospitals, schools, and dormitories.
Equipment Enclosures: Protecting valuable machinery and control systems.

Advantages

Life Safety Compliance: Meets strict international and local fire codes.
Thermal and Fire Protection: Provides high thermal insulation simultaneous with certified fire resistance.
Acoustic Damping: Rockwool cores offer superior noise reduction, ideal for noisy industrial areas.
Fast Erection: Single-component installation is much faster than traditional brick or concrete firewalls.

Payment & Shipping

Testing Documentation: Full fire test reports (e.g., from recognized laboratories like TUV or UL) are provided for code submission.
Handling: Rockwool panels are heavier than foam-core panels and require appropriate heavy-duty lifting equipment on site.
Customization: We offer custom panel lengths to minimize on-site cutting and maintain the factory-sealed fire rating.

Frequently Asked Questions

Q: Why is Rockwool preferred over PIR for some high fire-rated applications?
A: Rockwool is inorganic and classified as non-combustible (A1/A2). While PIR has excellent fire properties, it is still technically combustible, making Rockwool the necessary choice for the highest safety ratings (EI 90 and EI 120).

Q: How does the panel joint affect the fire rating?
A: The joint system is the weakest link. Our fire-rated panels feature highly precise, sealed joints that are tested as part of the system to maintain the rating against smoke and flame penetration.

CONTACT WITH US

Zhejiang Tiannv Color Steel Co., Ltd.

Enjoying good reputation from all the customers worldwide, we are the reliable partner you can trust in China.

Zhejiang Tiannv Color Steel Co., Ltd was established in January 2003, located in Zhejiang Province, which is a Sino-Hong Kong joint venture with a registered capital of 50 million RMB. As China Fire-Rated Steel Sandwich Panels Manufacturers and Fire-Rated Steel Sandwich Panels Factory, the company covers an area of 50000㎡, and a workshop area of 12000㎡. Company’s main products are hot galvanized steel coil, aluzinc coil, prepainted steel coils (PPGI / PPGL), prepainted aluminum coil, printed PPGI for household appliance, roofing/corrugated PPGI sheet, and PPGI paint. Currently, we have 85 skilled employees, 5 professional engineers and 15 experienced office personnel. The manufacture capability of our production line is nearly 100,000 metric tons per year.

Our company produces high quality color coated steel, and imposes strict quality control over the prepainted steel coils. We use good quality hot-dip galvanized steel coils or Alu-Zinc coated steel coils as base sheet and strictly select coated paints, which gives quality promise to customers and competitive advantage for our company.

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