Air Transfer Ducts

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Air Transfer ducts: They are produced in two branches of simple and armed. All fabrics linkages are in type of welding which width is 50 mm to prevent air leakage in ducts connections. Stainless steel brackets are used to a distance of one meter along the ducts to fix them. If the duct is larger than 120 cm, it can be possible to use two parallel strings to fix it. Two pieces of duct are connected with plastic zipper and covered with a layer of fabric to avoid any harm.

 

Armed ducts: They are used for air transmission in cases the duct has large rotation or in suction system. As an example, when air transmission from a horizontal fan to the ventilation well is considered, armed duct is one of the best options. Some bars are mounted to a distance of 10 cm on the external surface of armed ducts to form them without bending. These ducts are produced in length of 10 meters with special brackets, and plastic zipper are used to connect them to each other.

Repair of ruptured ducts: In most tunnels the body of ducts may be ruptured by collusion with stones or drilling machines, so the efficiency of ventilation systems is reduced because of air leakage.

W.S.G starts to produce fabrics with zipper which diameter is smaller than the ducts diameter to repair the rupture of ducts easily. These connections are presented in 1,2,3,5 meters length.

weight tensive strength tear strength cold heat
GSM Warp/weft – N/5 cm  Warp/weft – N/5 cm
600

700

800

Approx. 2000

Approx. 2500

Approx. 2500

Approx.320

Approx.400

Approx.400

-20

-20

-20

70

70

70