Description
ivided into four types: T**0, T**0, T**5, and T**0 with their
corresponding duct corner T**0DC, T**0DC, T**5DC and T**0DC.
.
TDC made by GD may match and produce all the ducts in the
DW**4 standard, and has passed the HVAC PW/TMI(***7) pressure test,
which is a speciality test for the intensity and sealed condition
of a duct.
TDC FabricationAnd Installation
1. GD TDC flange only requires ordinary fretsaw for cutting.
The flange strip should be cut to *0mm shorter than the length of
duct groove. The flange also should be cut as the direction shown
in the picture to prevent metal cutting damage on flange structure.
The notching should be slippery after cutting.
2. Insert four corner joints into the ends of the flange and
ensure the corner joints are fully inserted into the flange. Then
the whole flange frame can be fixed.
3. Insert the flange frame into the duct from one side of the
frame, then along the whole flange frame.
4. Fix the flange into the duct by various methods, spot
welding or riveting. But distance for fixing must be taken as
standard DW**4 Table5. The maximum distance from angle to the
fixing point should not exceed *0mm.
