Spiral Duct Ovalizer Machine — New | GZHCH, Guangzhou, China

The GZHCH Spiral Duct Ovalizer Machine (Oval Ducter) transforms round spiral ducts into flat-oval ducts, delivering better airflow performance with a more modern design than standard spiral or rectangular duct. Used for oval straight duct and oval elbow production, the machine works in combination with a molds unit to expand air ducts into different oval sizes.

The ovalizer is controlled via PLC and HMI systems, and equipped with a superior hydraulic unit to ensure the required forming force. Fabricators benefit from a machine characterized by good shape quality, high efficiency, and easy operation. GZHCH also offers a complementary Hydraulic Flattening Machine, used before the ovalizing process to press a section of spiral round pipe into an oval shape ahead of final ovalizing.

Why Choose an Oval Duct System?

Flat-oval ductwork offers a genuine performance and design advantage over both standard round spiral and rectangular ductwork — improving airflow characteristics while giving installations a more modern architectural appearance, particularly valuable in exposed ductwork applications where visual design matters alongside performance.

GZHCH's ovalizer, combined with its customizable mold unit, allows fabricators to produce a range of oval sizes from standard round spiral duct stock — extending the value of existing spiral duct forming equipment rather than requiring an entirely separate oval-specific production line.

Machine Specifications

Model HCT-3100

• Spiral diameter: φ330–1500mm
• Tube length: 3000mm
• Weight: 3180kg
• Dimensions: 5350×1050×950mm

Model YBJ-100

• Spiral diameter: φ250–1000mm
• Tube length: 1000–3100mm
• Weight: 800kg
• Dimensions: 1800×1100×1500mm

Processing Range (mold sizes)

• Semicircular mold diameter: φ150/200/250/300/350/400/450/500mm
• Column mold: 100/200/300/400/500mm
• Custom mold sizes available on request

Detailed parameters available on request from GZHCH's sales team.

Condition Available: New

Key Features

• Transforms round spiral duct into flat-oval duct for improved airflow and modern appearance
• Combined with mold unit to expand ducts into different oval sizes
• PLC and HMI control system
• Superior hydraulic unit ensuring required forming force
• Good shape quality, high efficiency, easy operation
• Complementary Hydraulic Flattening Machine available as a pre-ovalizing step

Applications

• Oval straight duct production
• Oval elbow fabrication
• HVAC ductwork with performance and design requirements beyond standard round or rectangular duct

Who This Machine Is For

• HVAC duct manufacturers and fabricators
• Ventilation equipment suppliers producing oval duct products
• Contractors serving projects requiring exposed, architecturally designed ductwork

Frequently Asked Questions

What does an ovalizer machine actually do?
It transforms round spiral ducts into flat-oval ducts, using a combination of hydraulic forming force and interchangeable molds to expand the duct into different oval sizes.

What's the difference between the two models?
The HCT-3100 handles a larger spiral diameter range (φ330–1500mm) at a fixed 3000mm tube length, while the YBJ-100 covers a smaller diameter range (φ250–1000mm) but offers variable tube length from 1000mm to 3100mm.

Do I need additional equipment before ovalizing?
GZHCH recommends using the complementary Hydraulic Flattening Machine first, which presses a section of the spiral round pipe into an oval shape before final processing on the ovalizer.

What mold sizes are available?
Semicircular molds are available in diameters of 150/200/250/300/350/400/450/500mm, with column molds available at 100/200/300/400/500mm. Custom mold sizes can also be produced.

Why choose oval duct over standard round or rectangular duct?
Oval duct offers improved airflow characteristics compared to spiral or rectangular duct, along with a more modern architectural appearance — valuable for exposed ductwork installations.

Is financing or staged payment available?
Yes. A deposit secures your order and begins production, with the remaining balance due only once your machine has been built, inspected, and is ready to ship.

Should I buy new or used?
This model is available new, from a manufacturer with HVAC ducting machinery experience since 1986.