Rectangular Duct Machine (Auto Coil Line)
Duct auto-line is special for the manufacture of HVAC square air ductwork from metal coil. Following are three types of popular duct auto-lines:
Rectangular Duct Machine (Auto Coil Line) – II
Rectangular Duct Machine (Auto Coil Line) -- III
Rectangular Duct Machine (Auto Coil Line) – TDF
Rectangular Duct Machine (Auto Coil Line) – II
Rectangular Duct Machine (Auto Coil Line) –II Introduction
The Rectangular Duct Machine (Auto Coil Line) –II consists of a metal feeding device, straightening and grooving equipment, notching and punching square equipment, and cutting equipment. The electrical control system uses a computer which combines with a closed-loop servo-system to increase the precision and stabilization of the line. The maximum working speed is 16m/min. The length tolerance is ±0.5mm. The diagonal line tolerance is ±0.8 mm. The feeding frame can be set as the customer's requirement.
Rectangular Duct Machine (Auto Coil Line) –II Flow Chart
Hydraulic Arch Crimping Machine Technical Specifications
| Coiler Raw Material Feeder-Leveler Grooving Roller | 1. Notch and Punch Square-Cut Feed Metal for TDF |
| 2. Cut Feeding Metal for Duct | |
![]() |
|
Rectangular Duct Machine (Auto Coil Line) –II Components
Coiler-material feeder-straightening device and grooving device, etc, have the following main device as follows:
Metal feeding frames: 2 pcs
Grooving roller machine: 1 set
Hydraulic shearing machine 1 set
Industry computer and specific software: 1 set
Rectangular Duct Machine (Auto Coil Line) II Main Parameters
| Model | Capacity in Mid-Steel Thinness Range | Max-Working Speed (m/min) | Max- Width (mm) | Coiler Max- Weight (Kg) | Dimension (mm) | Weight (Kg) | ||
| Length | Width | Height | ||||||
| DL-II | 0.6-1.5 mm | 16 | 1300 | 6500 | 3200 | 1800 | 1500 | 3500 |
We can make the different max width and coil different max weight according to clients' requirement
Rectangular Duct Machine (Auto Coil Line) –II can be used for ducting production but also for TDF (transverse duct snap flange system). If the duct manufacture system combines a T-12, Pittsburgh lock machine, folder and shaped clip, high quality ducts can be easily produced.
Rectangular Duct Machine (Auto Coil Line) III

Rectangular Duct Machine (Auto 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 of the Rectangular Duct Machine (Auto Coil Line) III 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. This is the ideal solution for producing high specification ducts at a lower investment if the additional floor space is not a problem.
Rectangular Duct Machine (Auto Coil Line) III Working Flow
Coiler--metal feeding frame--leveling 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 Machine (Auto Coil Line) III 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

Rectangular Duct Machine (Auto Coil Line) III Main Parameters
| Model | Capacity in Mid-Steel Thinness range | Max-Working Speed (m/min) | Max- Width (mm) | Coiler Max- Weight (Kg) | Dimension (mm) | Weight (Kg) | ||
| Length | Width | Height | ||||||
| DL-III | 0.6-1.5 mm | 16 | 1300 | 6500 | 3200 | 1800 | 1500 | 4500 |
The max-width can be designed according to clients' requirement.
Rectangular Duct Machine (Auto Coil Line) III Specifications
A: It can cut fixed sized metal. It can also be used with a plasma cutting machine.
B: (1) Punch "C", "S" inserted cleat notch. It can be used with "C" cleat and "S" inserted flange machines.
(2) Due to different connecting methods for notch cutting, it can be used with TDF flange machine and TDF connecting machines.
(3) It can punch all kinds of notches in angle steel flanges and "Z" shape flanges. It can also form "
","
" and "
"shape, and be used with a connecting machine to produce a complete set of ducts.
C: For example, it can punch TDC notch and fold metal for inserted flange, to produce "□" shaped duct. It can be used with both combined seaming machine and inserted flange to manufacture a complete set of ducts.
Rectangular Duct Machine (Auto Coil Line) - TDF
Rectangular Duct Machine (Auto Coil Line) – TDF Brief Introduction
This is the Rectangular Duct Machine (Auto Coil Line) - TDF that our engineers specially designed based on the Chinese market auto line with full functions, working stable and automatic control system. After development, the whole line will be easier to operate and more stable when compared to the series auto line in the present Chinese ducting industry.
The auto tube manufacturing coil-line combines a feeding metal frame, leveler grooving roll, hydraulic notch and punch square machine, hydraulic shear, movable Pittsburgh lock machine, duplex trans-verse flange manufacturing machine, TDF hydraulic folder and CNC system, etc.
At present, it is the smallest machine in the Chinese market, 4500×3500×1280mm. The machine is suitable for both indoor and site work because of its small size.

Duct Machine (Auto Coil Line) - TDF Components
1. Power de-coiler
2. Leveling beading machine
3. Punching angel device
4. Lock former
5. Double united TDF flange forming device
6. Bending device
7. Mechanical seaming
8. Cutting length device
Duct Machine (Auto Coil Line) - TDF Advantage
1. All the duct processing can be completed with this line.
2. High efficiency, 3 to 6 times that of the common line, 5 to 8 operators can be reduced.
3. Material length is checked automatically.
4. Multi-purpose: Slitting the sheets, produces the sheets, "
","
","
" of duct with or without the flange.
5. United lock-seam automatic.
6. Mechanical seaming mode: Beautiful and tightness.
7. Simple to operate: The user only needs to input the duct type, the size and quantity, the entire operation will be controlled automatically.
8. Production speed is adjustable: 1-18 m/min.
9. Double servo driving system.
10. Double optical fiber positioning.
11. Enters the work site directly: The dimension is organism is 4500X3500X1280mm without un-coiler.
12. Convenient moving designing: overall designing, uses the standard connecter, suited for moving the machine according to the request.
13. The line is very stable; the whole line uses world famous brand electrical components.
14. No need for pressure air source. Just 3 x AC 380 V.
Duct Machine (Auto Coil Line) - TDF Working Flow
| Coiler-Metal Feed-Leveler Grooving Roll< | 1. Shear--cooperate with Pittsburgh lock machine or plasma cutting machine |
2. Punch shear-form Pittsburgh with Pittsburgh lock machine-fold with TDF folder to produce" "," "," " |
|
| 3. Shear, fold-seal with sealing machine to form TDC | |
![]() |
|
The following TDF flange duct is from our line, custom duct flange shape is available.


Duct Machine (Auto Coil Line) - TDF Specification
| Technical Parameters | |
| Formed Profile Type | TDF Flange Duct |
| Material: | Galvanized sheet, stainless steel |
| Raw Material Thickness: | Galvanized sheet (0.5~1.5mm) |
| Stainless steel (0.5~1.0mm) | |
| Raw Material Width | 1250mm |
| Raw Material Weight | 5000kg |
| Coil ID | φ520mm |
| Coil OD (MAX) | φ1000mm |
| Max Speed | 18m/min |
| Beading | Standard "V" (slope spacing: 210mm) |
| Control System | Entire computer numerical control |
| Power Source | 3 X 380V; 50Hz; 11kw |
| Hydraulic Pressure | 7MPa (MAX. 14MPa) |
| Line Movement Way | Straight line |
| Line (Without Un-Coiler) | 4500mm X 3500mm X 1280mm |
| SITUATION REQUIREMENTS | |
| Power | 380V±10%, 50Hz±10%, 3 x AC |
| Environment Temperature | -5~40 degrees |
| Relative Humidity | 55~85% |

- Spiral Concrete Corrugated Post Tension Tube MachineOur Spiral Corrugated Post-Tensioning Tube Making Machine is excellent for producing round corrugated ducts used in expressways, bridges ...

- Spiral Corrugated Post Tensioning TubeOur spiral corrugated post-tension tubes are widely used in bridges, buildings, parks and gymnasiums. We provide our patented invention-HC Series to meet the changing market ...

- Cold Roll Forming MachineRoll forming machinery technology consists of a continuous cold rolling and bending operation, with metal products roll formed at room temperature, where strip metal is transformed along a linear axis ...

- C-Z Purlin Forming Machine (Changeable)C-Z shape changeable roll forming machine are much more efficient and produce unlimited profiles length compared with processing press brake and separately punching machine with holes punching mold ...



