Refractory clad metal air duct
19_Refractory clad metal air duct Rel. 2022-09-25
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Release time: 2022-05-06 12:50:59
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Refractory clad metal air duct
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".

Features
Combustion performance A1 grade, high strength and light weight, water and moisture resistance, easy processing.

Application field
Widely used in smoke prevention and exhaust systems of various buildings.

STRUCTURE CHART

TECHNICAL PARAMETERS
PROJECT NAME TECHNICAL PARAMETERS FOR 1 & 3 HOURS FIRE RESITENCE LIMIT
Structure Galvanized steel plate + rock wool + Bohengyi refractory duct plate
Inner layer Material Galvanized steel
Core Name Rock Wool
Thickness 50mm
Outer layer Material Bohengyi refractory duct board
Thickness for 1 Hour fire resistance limit 8mm
Thickness for 3 Hours fire resistance limit 9mm
Link method Angle steel flange
Construction methods Air duct hoisting and wrapping secondary construction

FINISHED PRODUCT EFFECT








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