The galvanized steel sheet base offers excellent structural strength and corrosion resistance, ensuring long-term durability in ventilation systems. The rock wool or glass wool insulation layer provides excellent thermal insulation performance, reducing heat transfer between the inside and outside of the duct, thus reducing the energy consumption of central air conditioning systems. The powder coated surface finish is smooth and easy to clean, preventing dust buildup and maintaining a clean appearance. The flanged connection design allows for easy installation and disassembly for maintenance purposes. It has a Class B1 fire resistance rating, making it suitable for commercial building ventilation systems where fire safety is critical.
This HVAC insulated duct 90-degree elbow is available in nominal duct sizes from 100mm to 1000mm, with insulation thickness options of 25mm and 50mm. The base material is 0.5mm~1.2mm thick galvanized steel sheet, and the insulation material is either rock wool or glass wool with a density of 80~120kg/m³. The working temperature range covers -20℃ to 80℃, making it suitable for both heating and cooling ventilation systems. The flanged ends comply with GB/T 17467 or ANSI duct flange standards, allowing easy connection to matching duct sections. The weight per square meter ranges from 2.5kg for 100mm size to 25kg for 1000mm size, and the overall angle is exactly 90 degrees to ensure smooth air flow.
This HVAC insulated duct 90-degree elbow is primarily used in central air conditioning systems, commercial building ventilation systems, industrial workshop ventilation systems, and hotel ventilation projects. Typical application scenarios include office building air duct renovation, shopping mall ventilation system construction, industrial workshop air exhaust systems, and hotel HVAC system maintenance. It is suitable for HVAC contractors, building maintenance teams, and ventilation system engineers looking for insulated duct fittings that can reduce energy consumption and improve the efficiency of central air conditioning systems.
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