FIRE RESISTANT DUCTING SYSTEMS

摘要

A fire resistant ducting system comprises at least two elongate duct sections (1, 2) having flanges (4) at each end through which adjacent duct sections (1, 2) are secured together, an intumescence gasket (20) being located between the two flanges, the duct sections being lined on the interior surface with a fire resistant insulation lining (7) or having an outer skin (5) and an inner skin (6) with the insulation lining (7) located there between.