TDC unit is one of the two universal flange making systems in the
world. It can save time and material drastically with its wel-seal,
strong and durable joint structure. So it is specially suitable for
producing a duct with a large sectional area. Today many famous
buildings in the world utilize this kind of structure in the
ventilation system such as the American Kennedy Space Center,
Guangzhou CITIC Plaza etc. The unit consists of a feeding frame,
main forming machine and a shearing unit, which includes grinder
and hydraulic shearing unit. The hydraulic shearing unit makes
fixed cutting available with very little burr, and may be operated
automatically with a maximum work speed of 6 m/min. It is divided
into four types: T**0、T**0、T**5、T**0 with their corresponding duct
corner T**0DC、T**0DC and T**0DC.TDC made by SBKJmay match and
produce all the ducts in the DW**4 standard, and has passed the
HVAC
