Smoke and fire control enclosure

This flexible fire‑resistant membrane‑encased metal ventilation duct system has passed the national GB/T 17428‑2009 test method for fire resistance of ventilation ducts and meets the 1.0‑hour and 1.5‑hour fire‑resistance requirements (integrity and insulation), thereby satisfying the design criteria for building smoke control and exhaust systems.

This flexible fire‑resistant membrane‑wrapped metal ventilation duct system has passed the national GB/T 17428‑2009 test method for fire resistance of ventilation ducts, meeting the 1.0‑hour and 1.5‑hour fire‑resistance requirements (integrity and insulation) and satisfying the design criteria for building smoke control and exhaust systems. It effectively prevents heat from fire‑generated smoke from transferring through the duct wall, while enabling the removal of smoke and heat during a fire to ensure safe evacuation and facilitate firefighting and rescue operations. With its lightweight, ultra‑thin, and compact structure, this system represents a groundbreaking, innovative alternative to conventional rigid fire‑protective duct‑wrapping solutions (fire‑resistant panels plus rock wool).

[Product Composition]

Core material: aluminosilicate fiber blanket—a high-temperature insulation material composed of calcium oxide, magnesium oxide, and silicon dioxide, which delivers excellent thermal insulation performance over long periods at temperatures below 1260°C.

Surface encapsulation: Custom aluminum‑foil fiberglass‑reinforced composite material, tear‑resistant, high‑temperature resistant, and moisture‑ and water‑proof.

Tensile strength: twice that of conventional aluminum‑foil fiberglass fabric.

Performance: Non-combustible Class A / Density 96 kg/m³ / Maximum service temperature 1260°C (24 hours) Thermal conductivity: 0.06 at 200°C; 0.27 at 800°C

Standard: GB/T 17428-2009, 90/60 minutes, GB 8624, non-combustible, Class A

Standard: GB/T 17428-2009, 90/60 minutes, GB 8624, non-combustible, Class A

[Product Specifications]