During a fire, fire-resistant duct manufacturers provide fire-resistant ducts that can effectively suppress the spread of fire within the fire-resistant time and ensure the normal operation of the ventilation and smoke exhaust system. They are suitable for mechanical pressure supply systems and mechanical smoke exhaust systems crossing fire-resistant partitions. They can also serve as exhaust pipes for kitchens, bathrooms, toilets, and other areas.

Fire-resistant ducts are made from metal, non-metallic sheeting, or other non-combustible materials, with non-metallic materials typically made of hard polyvinyl chloride or glass fiber reinforced plastics. Intermediate traders usually deal with fire-resistant ducts, and the metal materials are generally galvanized sheeting. Additionally, ducts made by combining a non-combustible material facing with an insulating material inner panel are referred to as composite ducts.

Fire-resistant ducts are primarily used in engineering projects for smoke exhaust systems in basements, as well as for combined exhaust and smoke ventilation systems, air conditioning ventilation systems, and for protecting ducts passing through fire-resistant compartments. Especially for multi-system centralized air supply and exhaust shafts, which are often designed as extra-large ducts due to high air volume, both manufacturing and installation are extremely challenging. Moreover, it is required that galvanized steel ducts be externally lined with fire-resistant panels. Manufacturing, connecting, and installing extra-large fire-resistant ducts is particularly difficult, and meeting the quality requirements for bracket fabrication and fire-resistant panel enclosures is also quite challenging, necessitating a comprehensive and effective construction method.

The principle of fire-resistant ductwork is very simple; it can prevent the spread of fire by blocking air flow. During a fire, timely delivery of fire-resistant ductwork ensures that dense smoke and flames are produced first, both of which are spread through air flow. However, fire-resistant ductwork can isolate these harmful substances, significantly reducing the likelihood of fire spread. Additionally, it provides some sound insulation, allowing people to detect fires more quickly and take effective measures.

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