Rectangular Duct Forming Machine III or duct coil-line III consists of a metal feeding frame, leveling and grooving equipment, hydraulic punching square notch equipment, hydraulic cutter and folder. The electrical control system uses a computer with a closed-loop and servo-system to increase the precision and reliability of the manufacture line.
    The maximum working speed is 10m/min. The length tolerance is ±o.5mm. The diagonal line tolerance is ±0.8mm.
   One team will produce 1000m2 of square duct by using this system

Rectangular Duct Forming Machine working flow:

Coiler--metal feeding frame--levelling and grooving equipment
Square notch and punch cutter--fold and cut metal for TDF
Fold and cut metal for inserted flange
Cut metal for duct

Rectangular Duct Forming Machine Basic Equipment:
A: Two units of motor-driven metal feeding frames
B: One set of leveling and grooving equipment
C: Four sets of hydraulic punching square notch dies
D: Hydraulic cutter and folder
E: Industrial computer and special software