Made of Aluminum foil + pet + steel wire OR flexible duct+insulated sponge+aluminum foil. (Silent insulated duct Punched many small hole, can absorb most of sound from airstream)
We are the biggest manufacturer in China. Our price is lowest, the quality is perfect, and the delivery will be promptly
ALUMINUM NON-INSULATED DUCT (MODEL: ALU-NOD)
Non-insulated aluminium flexible ducts are specifically produced for low and medium pressure heating, cooling, ventilation, exhaust and air conditioning systems.
Airtight aluminium flexible ducts are produced from multi layer aluminium strengthened with high tension hard steel spring wire. It has high elasticity and flexibility.
It can be easily fitted to circular, oval or rectangular connectors. In case of fire no toxic or poisonous gases are released
PROPERTIES VALUE
Diameter Range 50-750mm (2"-30") Temperature Range -30 ~ +250 ºC
Velocity Of Air Flow (Max.) 30 m/s
Working Pressure 2500 Pa
Bending Radius 0.54*D
Standard Length 10M, 5M etc
Good insulation---heat insulated. (Absorb noise---can absorb the noise from the shaking when ventilated.) No corrosive---not corrode the alu. pipe and metal parts. Durability---not decay, mildew, durability. Fire---resistance. Practicality: suitable for the densely-populated area (such as school, supermarket, office, stadium, theater, factory...) high requietment of the enviroment area, such as hospital, laboratory, howff, bus, train, broadcasting studio.
PROPERTIES VALUE
Diameter Range 75-750mm (3"-30") Temperature Range -30 ~ +250ºC
Velocity Of Air Flow (MAX.) 30 m/s
Working Pressure 2500 Pa
Bending Radius 0.54*D+25MM
Thickness Of Fiberglass Insulation 25MM---50MM
Density Of Fiberglass Insulation 16~32KG/M3
Standard Lengt
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Aluminum flexible duct
