Automatic Spiral Ventilation Duct Forming Machine

• Customization: Available
• After-sales Service: Supported
• Automatic Grade: Full-Automatic
• Model NO.: SD01
• Warranty: 1 Year
• Diameter Range: 100-1800mm
• Thickness Range: Galvanized Steel: 0.5-1.2mm (Strip Width: 137mm)
• Uncoiler: Inner Coil Diameter: 460-520mm
• Seaming Method: Outer Lock Seam
• Feeding Speed: Adjustable, 0-35 Meters/Minute
• Cutting Method: Roller Shear Cutting or Plasma Cutting
• Power System: Shearing and Flipping: Pneumatic
• Forming Head Mold: Steel
• Transport Package: Wooden Case
• Specification: 2700*1700*1700mm
• Trademark: bobo
• Origin: Jiangsu
• HS Code: 8479819000
• Production Capacity: 20-35 Meters/Minute

Product Description

 

Product Description

Spiral Duct Machine

The Spiral Duct Machine is a high-efficiency, intelligent sheet metal processing equipment specifically designed for manufacturing round spiral ducts. It is widely used in HVAC (Heating, Ventilation, and Air Conditioning), building ventilation, industrial dust removal, and other fields. Utilizing automated coil-forming technology, the machine quickly processes metal coils into high-strength, airtight spiral ducts, significantly improving production efficiency and product consistency.

Spiral Duct Machine is specialized equipment for manufacturing spiral ducts.
Spiral ducts, also known as spiral lock-seam thin-wall tubes, were initially developed for applications in Western
countries, including ventilation systems for naval vessels and ships. Later, their use expanded to civilian facilities such as
trains, subways, and mines.
By the year 2000, statistics showed that spiral ducts had been adopted in 95.6% of U.S. office buildings, shopping malls, and subway systems. Additionally, 72.5% of residential central air conditioning systems utilized spiral ductwork.

Machine details

 

Functional Overview
The clamping device is an essential subsystem of the spiral duct machine, designed to securely hold and precisely position the metal coil strip during the continuous forming process. It ensures stable material feeding while maintaining proper alignment for consistent spiral duct production.

 

• Precision Grip System: Hydraulically-actuated clamping rollers with adjustable pressure (5-15 bar)

• Self-centering Mechanism: Automatically aligns coil strip to ±0.2mm tolerance

• Wear-resistant Components: Hardened steel rollers (HRC 58-62) with replaceable polyurethane liners

• Anti-slip Design: Diamond-patterned contact surface increases friction coefficient to 0.4-0.6

• Quick-release Function: Emergency stop and rapid unclamping in <2 seconds

Features

 

High Production Efficiency
* Feeding speed: 0-35 meters/minute, supporting continuous automated processing with a daily output exceeding 2,000 meters
(depending on specifications).
* Integrated uncoiling, forming, seaming, and cutting, minimizing manual intervention and reducing production costs.
Precision Forming
* Equipped with hydraulic clamping + pneumatic shearing system, ensuring stable material feeding with roundness tolerance ≤ ±1mm.
* Steel molds offer superior wear resistance, and the outer lock seam provides better airtightness than traditional manual ducts.
Multi-Material Compatibility
* Supports galvanized steel (0.5-1.2mm), stainless steel (0.45-1.0mm), and aluminum (0.8-1.2mm), meeting various corrosion/heat resistance requirements.
Flexible Adaptability
* Diameter range: 100-1800mm, with customizable non-standard specifications.
* Optional plasma cutting or roller shear cutting for thick plates or special materials.
Energy-Saving & Eco-Friendly
* Compared to traditional rectangular ducts, spiral ducts reduce air resistance by 20%, significantly saving energy in long-term operation.
* Scrap recovery rate exceeds 90%, complying with green production standards.

Finished products

 

 

Product Parameters

 

No	Description	Data
1	Diameter Range	100-1800mm
2	Thickness Range	Galvanized steel: 0.5-1.2mm (Strip width: 137mm)
3	Uncoiler	inner coil diameter: 460-520mm
4	Seaming Method	Outer lock seam
5	Feeding Speed	Adjustable, 0-35 meters/minute
6	Cutting Method	Roller shear cutting or plasma cutting
7	Power System	Shearing and flipping: Pneumatic
8	Forming Head Mold	Steel
9	Daily Output	1,200-2,500 linear meters

Packaging & Shipping

 

Packaging:
Stable wooden package protects machine from strike and damage.
Wound plastic film keeps machine out of damp and corrosion.
Fumigation-free package helps the smooth customs clearance.
The big size machine will be fixed in container without package.

Shipping:
For LCL, we cooperated with reputable logistics team to send machine to sea port speedily and safely.
For FCL, we get the container and do container loading by our skillful workers carefully.
For forwarders, we have professional and long-term cooperated forwarders who can handle the shipment smoothly. Also we would like
to have seamless cooperation with your forwarder at your convenience.

Company Profile

FAQ

 

1. Q: What is the power supply of the machine?
A: The standard power supply in china is 380V, 3P, 50Hz. We also can customized accordingly.

2. Q: What information should the customer provide to get an accurate quotation from us?
A: The customer should provide the related technical requirements, drawings, pictures, industrial voltage, planned output, etc

3. Q: What is the payment term A: The payment term is 30% down payment, and 70% before shipment(T/T mode), we also accept other payment term, like L/C, DA, D/P etc

4. Q: What is the delivery time?
A: Normally the delivery time of the machine is 30 days after receive down payment.

5. Q: What is the warrantee period of the machine?
A: The warrantee period is one year since the date of B/L.