HVAC Duct & Fire Damper Machines

About LOCKFORMING

Guangzhou Lockforming Machinery Co., Ltd. is a leading manufacturer specializing in the production and sales of HVAC duct machines and fire damper equipment. With two large production bases and a professional technical team, we have the capability to design, develop, and manufacture both standard and non-standard heavy-duty machinery.

For over two decades, our commitment to technological advancement, continuous improvement, and innovation has positioned us as a leader in the sheet metal processing equipment industry. Our main product lines include automatic duct making lines, fire damper machines, hydraulic shearing and folding systems, spiral formers, and plasma cutting machines.

Trusted by clients across the Middle East, Southeast Asia, Africa, and beyond, we deliver high-efficiency, labor-saving, and material-optimized solutions for modern ventilation and fire safety systems.

Our Product Lines

Engineered for performance, durability, and automation — our machines are built to streamline HVAC and fire damper manufacturing.

Duct Mfg Auto Line VIII

Fully automated U-shaped line with 20–23 sec/duct output. Supports Pittsburgh, TDF, and angle iron flanges.

HVAC Automation

Fire Damper Auto Line

Complete production line for fire-rated dampers with high precision forming and assembly integration.

Fire Safety

Round Duct Former

High-speed spiral and longitudinal seam former for round ducts up to 1600mm diameter.

Round Systems

TDF Flange Machine

Best-selling flange former with non-stop cutting. Ideal for medium to large ductwork.

Flange Tech

Hydraulic Shearer/Folder

Dual-function machine for precise cutting and folding of sheet metal up to 3mm thickness.

Sheet Processing

Press Brake

High-torque press brake for accurate bending of C/U profiles and support channels.

Forming

Spiral Tube Former

LOCK-Spiral LC-85/1500A model for continuous spiral duct production with tight seam integrity.

Spiral Line

Pittsburgh Seam Closer

Vertical and horizontal models available for secure, leak-proof duct connections.

Seam Tech

C Profile Rolling Machine

For manufacturing C/U-shaped steel supports and anti-vibration profiles.

Support Systems

Plasma Cutting Machine

High-precision CNC plasma cutter for complex duct and component fabrication.

Cutting

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Why Choose LOCKFORMING?

High Automation

Our auto lines reduce manual labor by up to 70%, with servo-controlled feeding, automatic notching, beading, and flange forming.

Proven Reliability

With over 20 years in the industry and installations in Dubai, Saudi Arabia, Singapore, and Egypt, our machines are battle-tested.

Custom Solutions

We design and build non-standard equipment tailored to your factory layout, duct specs, and production goals.

Frequently Asked Questions

What is the production speed of your Auto Duct Lines?

Our latest Auto Duct Lines (V to VIII) achieve a cycle time of approximately 20–23 seconds per duct piece, depending on size and configuration.

Do you offer installation and training?

Yes, we provide on-site installation supervision and operator training. Remote support is also available via video call.

Can your machines handle different duct sizes?

Absolutely. Our systems are designed with adjustable components to accommodate a wide range of duct dimensions, from small residential to large commercial HVAC systems.

What is the warranty period?

We offer a standard 12-month warranty on all machinery, covering parts and technical support.

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Precision HVAC & Fire Damper Machinery