Construction technology of TDF flange duct

1. A TDF flange air duct manufacturing  auto line, which is programmed control, automatic feeding coil to forms Pittsburgh lock, TDF flange, folding and cutting to a full wrap duct. accurate high degree of automation, a total of duct auto line has greatly increased the production efficiency and production precision, reduce the project cost.

2. A TDF flange duct replaces the angle iron duct, it is with the advantages of more structural strength, no welding, riveting, galvanized sheet manufacturing, good corrosion resistance, closely connected, less leakage rate., save energy and reduce operating costs. The appearance, size, shape and line flow of the finished product meets the national standard. It is beneficial to the production of TDF flange duct rendering factory, scale, standardization and automation.

Difference between smoke exhaust damper and fire damper

1、 smoke exhaust fire damper:

It is installed in the exhaust system ducting, usually closed, manually or electric open when there is a fire to exhaust smoke. When the smoke temperature reaches 280 ℃ , it closed, its electric smoke release function is usually controlled by the center or a simple smoke detection device to direct its action.

2、 Fire damper:

Fire damper is normally open, closed when there is a fire to prevent the fire spread.

Fire damper is used in ventilation and air conditioning system,  except 150 ℃ using in public buildings kitchen exhaust smoke system, the general ventilation and air conditioning system with fire damper operating temperature is 70 ℃.

Selection refers to the functions, normally open or normally closed, automatically closed, automatically open, manually closed, manually open, manually reset, remote control or other requirements.

 Comifo is a professional manufacturer of fire damper products for more than 20 years, with this experience, Comifo has developed and designed fire damper manufacture auto line which can produce fire damper high efficiency, fire dampers made by these auto lines will definitely meets the requirements of the standard CCCF.