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Precision Metal Forming
Solutions

Manufacturer of advanced air duct, fire damper, and cable tray automatic production lines. Trusted by nuclear power plants and HVAC leaders across China and globally.

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About Fodi Machinery

Innovating metal forming technology since 1988

Fodi Machinery Co., Ltd is a high-tech enterprise specializing in the R&D and manufacturing of sheet metal related products, founded in 1988. We hold the only patented technology for fire damper production line in China and possess 24 air duct-related patents.

Our fire damper production line dominates 70% of the Chinese market. We provide equipment and technical support to two nuclear power plants in China — a testament to our position at the highest technical level in this industry.

With decades of experience, we design and manufacture complete sheet metal fabrication solutions — from roll forming and cutting systems to duct accessories, angle steel machines, and laser/plasma cutting systems.

Fire Damper Machine Duct Production Line TDC Flange Machine Automatic Line

Our Products

Advanced machinery for HVAC, fire safety, and industrial applications

Fire Damper Making Machine

Fire Damper Making Line

Fully automatic production line with patented technology. High-speed forming, precision cutting, and assembly for fire-rated dampers.

Square Air Duct Machine

Square Air Duct Making

Integrated system for rectangular ductwork. Includes roll forming, notching, seaming, and corner locking.

Plasma Cutting Machine

Plasma/Laser Machine

High-precision cutting systems for sheet metal. CNC-controlled with multiple nozzle options and nesting software.

Angle Steel Machine

Angle Steel Machine

Automatic punching, cutting, and welding for angle iron used in duct supports and frames.

TDC Flange Machine

TDC Flange Former

Forms TDC flanges on rectangular ducts without welding. Fast, clean, and leak-resistant connections.

Round Duct Machine

Round Air Duct Machine

Continuous spiral pipe forming line. Adjustable diameter, high output, and automatic welding option.

Riveting Machine

Rivet/Punching/Seaming

Multi-functional station for duct assembly. Combines punching, riveting, and seaming in one compact unit.

Lock Former Machine

Lock Former

Edge forming machine for creating double locks on duct sheets. Compatible with various thicknesses and materials.

Cable Tray Line

Cable Tray Production Line

End-to-end solution for ladder, perforated, and solid-bottom cable trays. Includes punching, bending, and assembly.

Bending Machine

Automatic Bending Machine

High-speed panel bender for HVAC components. CNC-controlled with tool-free setup and quick changeovers.

Elbow Welding Machine

Duct Round Elbow Welder

Automated welding station for round duct elbows. Precision alignment and consistent weld quality.

Positive Pressure Outlet

Positive Pressure Outlet Line

Specialized production line for smoke exhaust and pressurization system components. Fully automated.

Why Choose Lock-Former?

Engineered for performance, reliability, and innovation

Patented Technology

Exclusive patents in fire damper production and 24+ air duct innovations. Proven technical leadership in China.

Industrial-Grade Build

Heavy-duty construction with precision components. Designed for 24/7 operation in demanding environments.

Global Support

Equipment installed in nuclear facilities and HVAC plants worldwide. Multilingual support and service network.

1988
Founded
70%
Market Share
24+
Patents
2
Nuclear Plants Served

Frequently Asked Questions

What is a lock former machine?

A lock former is a roll forming machine that creates double or single locks on the edges of sheet metal for ductwork. These interlocking seams allow ducts to be assembled without welding or fasteners, ensuring airtight connections.

Do you offer custom production lines?

Yes. Fodi Machinery specializes in designing and building custom automatic production lines tailored to specific product dimensions, materials, and output requirements for fire dampers, air ducts, and cable trays.

What materials can your machines process?

Our machines handle galvanized steel, stainless steel, and aluminum in thicknesses from 0.5mm to 3.0mm, depending on the model and application.

Is technical support available internationally?

Yes. We provide installation supervision, operator training, and remote troubleshooting. On-site service is available for major projects and key clients worldwide.

Get in Touch

Contact the manufacturer directly for quotes, technical specs, and support.

Foshan Nanhai Fodi Machinery Co., Ltd

Tel: +86-757-85634817

Fax: +86-757-85634807

Mobile: +86-18620115850

Email: [email protected]

WhatsApp: +86 186 2011 5850

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