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01.
Non-combustible inorganic glass steel ventilation ducts use
is divided into non-insulation type F and insulation type B.
02. Non-F-type insulation ventilation ducts for the
ventilation system and anti-smoke exhaust system. B type
insulation ventilation ducts for the air conditioning system
of delivery, exhaust system.
03. Non-combustible inorganic glass steel ventilation ducts
purposes also divided into Class P and Class D Class P is
mainly used in public buildings, civil air defense projects
as well as industrial plants generally require installation
of ventilation and air-conditioning facilities and mine vent
pipe, anti-smoke pipe. D class is mainly used in residential
building ventilation, range hood duct.
04. The incombustible inorganic glass ventilation duct,
according to the common cross-sectional shape may be
circular (D) and rectangular (L). |
