Function:
1. Production line is mechanized and with high level of automation.
2. Air duct itself is flange,reduce the weight of the wind pipe,compared with the traditional angle iron flange,saving the flange type steel and connecting bolt,reduce the material consumption.3. Wind pipe is well sealing,low leakage,energy saving,reduce the air conditioning unit operating cost
4. Wind pipe reinforcing automatically,high strength and beauty and tidy,no zinc damage.
application area：
Used for all kinds of ventilation and smoke exhaust pipe of various ventilation, air conditioning and fire protection system.
Production material：
Using high quality galvanized plate or super galum plate.
