Duct Manufacture Auto-line II

Automated rectangular duct production with closed-loop servo precision and continuous dual-coil feeding.

Complete rectangular duct manufacturing system for HVAC fabricators requiring high-volume, consistent production. Integrates feeding through final cutting in one automated line, eliminating material handling between separate stations while maintaining precision through computer-controlled servo positioning.

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Key Specs

Key Specs

Overview Points

Single-Pass Processing

Integrates feeding, leveling, grooving, notching, punching, and shearing without manual transfers

Continuous Dual Feeding

Two decoiling stations minimize changeover downtime, maintaining consistent production throughput

Servo Loop Control

Computer-controlled servo system ensures repeatable positioning accuracy across all operations

Four Hydraulic Stations

Multiple notch and die stations handle various corner profiles without retooling requirements

Clean Hydraulic Cutting

Hydraulic shearing delivers burr-free cuts, reducing downstream finishing before assembly

Leveler Grooving Roller

Eliminates coil memory deformation for flat stock entry into forming stages

Automated Programming Software

Industrial software calculates feed lengths, notch positions, and shear points from duct specs

Multi-Shift Construction

Heavy-duty steel frame and hardened tooling built for sustained high-volume operation

Key Features

The electrical control system combines an industrial computer with a closed-loop servo drive to regulate feed length and positioning in real time. This eliminates cumulative tolerance errors across long production runs, so the last duct in a batch matches the first.

Two power metal feeding frames allow operators to stage the next coil while the current one is running. When one coil ends, the switchover is fast — keeping the line productive instead of idling during material changes.

Four independent hydraulic notch and die units cut corner profiles for various duct joint types in a single stroke. Operators can configure different notch patterns per job without swapping tooling, shortening changeover time between orders.

The leveler grooving roller station removes coil set and edge wave before the sheet reaches the notching and shearing stages. Flat, pre-grooved material feeds directly into forming, producing ducts with tight dimensional tolerances and consistent lock seam alignment.

Proprietary software handles job programming, feed calculation, and sequence coordination across all stations. Operators input duct dimensions on-screen and the system executes the full cycle — reducing setup errors and allowing less experienced staff to run the line reliably.

Technical Specifications

Line II consists of a feeding metal frame unit, leveler grooving roller, notch and punch square machine, shearing machine. The electrical control system uses a computer combined with a closed-loop servo-system to increase the precision and stabilization of the line. 

Applications

HVAC rectangular duct fabrication for commercial and industrial buildings

Ventilation system manufacturing for factories and warehouses

Prefabricated ductwork production for construction projects

Sheet metal processing for building material suppliers

Custom duct manufacturing for machinery repair and retrofit shops

High-volume duct production lines serving OEM appliance manufacturers

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FAQ

Duct Manufacture Auto-line II is widely used in: HVAC rectangular duct fabrication for commercial and industrial buildings; Ventilation system manufacturing for factories and warehouses; Prefabricated ductwork production for construction projects; Sheet metal processing for building material suppliers.

All NTBOBO machines come with a 1-year warranty from the date of Bill of Lading. Our engineering team provides 24-hour technical support throughout the warranty period.

We accept 30% down payment by T/T (Telegraphic Transfer), with the balance due before shipment. Other payment arrangements can be discussed for long-term partners.

Standard delivery is within 10-35 working days after receiving the down payment, depending on the machine model and customization requirements.

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