Refractory air duct
|09_Refractory air duct
|| Rel. 2022-09-25
|for any questions send an email to: firstname.lastname@example.org
Refractory air duct
The metal air duct refractory cladding system is filled with 50MM rock wool on the outer surface of the original metal air duct,
and covered with 9MM magnesium crystal air duct sheet.
After the coating, the fire-resistant integrity and fire-resistant heat insulation of the original metal air duct can be improved
to three hours, which can ensure the normal operation of the smoke prevention and exhaust system in the fire, and meet the fire
protection system in GB51251-2017 "Technical Standard for Building Smoke Prevention and Exhaust System".
Requirements for the fire resistance rating of ventilation ducts.
Refractory air duct plate 8mm 1 hour fire resistance limit
Refractory air duct plate 9mm 3 hours fire resistance limit
It is suitable for smoke prevention and exhaust systems of commercial and civil buildings, and smoke
prevention and exhaust systems of hospitals and subways.
|Combustion performance class A1
||Waterproof and moistureproof
||High strength and light weight
|No halogenation, no powdering
||Easy to process
||Fire resistance limit 180min
It is suitable for all smoke prevention and exhaust systems, and can replace the metal duct cladding system.
||British and German stocks across the network seem to be set
||Gold black air duct hard wrap
||Metal duct soft cladding
||Integrated installation, less process, convenient installation and high efficiency
||Requires two installations and construction, and the construction period is long
||High labor cost and long construction period
||The machine is integrated in the factory, and it is easy to assemble and install on site
hrough connectors, and the quality is guaranteed.
||The self-weight is relatively heavy, and the requirements for the fireproof board and the
boom of the wafer are high.
||Manual operation, there are many uncertain factors on site, appearance five:
||ater and moisture resistance, anti-corrosion, aging resistance, non-returning,
without external damage, the normal service life can reach more than 50 years
||In the wet environment of metal air duct, the base corrodes, and the variable increases
after the rock absorbs moisture, which reduces the service life, and the service life is only about 5-10 years
||The base corrosion service life of metal air ducts in a humid environment is only about 5-10 years
||Net weight 25mm, save machine space
||The thickness is 60mm, occupying the floor space
||The thickness is 50mm, the surface temperature effect is not good
The refractory clad metal air duct is filled with 50mm rock wool on the outer surface of the original metal air duct,
and covered with 8mm or 9mm Bohengyi air duct plate. It meets the requirements for the fire resistance limit of ventilation
ducts in GB51251-2017 "Technical Standards for Smoke Prevention and Exhaust Systems in Buildings".
Combustion performance A1 grade, high strength and light weight, water and moisture resistance, easy processing".
Widely used in smoke prevention and exhaust systems of various buildings.
||TECHNICAL PARAMETERS FOR 1 & 3 HOURS FIRE RESITENCE LIMIT
||Galvanized steel plate + rock wool + Bohengyi refractory duct plate
||Bohengyi refractory duct board
|Thickness for 1 Hour fire resistance limit
|Thickness for 3 Hours fire resistance limit
||Angle steel flange
||Air duct hoisting and wrapping secondary construction
FINISHED PRODUCT EFFECT