Fully automatic PDF3 Flange Air Duct Production Line for Square Ducts

lidingWhy do professionals choose Liding full Air Duct line ?

Many ductwork fabrication plants still employ traditional production methods, with processes such as uncoiling, levelling, corner punching, shearing, lock forming, flange forming and bending carried out on separate machines; after each process is completed, the material must be manually transferred to the next machine. This results in waiting times between processes, the accumulation of stacked sheet metal, and limited production capacity.

The PDF3 fully automatic duct production line integrates these processes into a continuous flow. Steel coils enter at one end and finished ducts are output at the other, with no material touching the floor, no transfer and no downtime in between.

This line produces PDF3 profiled flanged ducts. The PDF3 flange is continuously roll-formed directly at the edge of the sheet metal. Combined with the Pittsburgh lock-seam process, this ensures excellent sealing without the need for additional flange strips or manual assembly, thereby eliminating the most time-consuming stages of traditional processes.

Control System: Utilising a Panasonic PLC, the system is equipped with dual control panels and a 10-order management system. Complete dimensions and parameters can be set independently for each order, with the flexibility to switch between continuous and single-order modes without the need for repeated data entry. The entire line can be operated and managed by a single operator and two personnel collecting the finished products, significantly reducing labour requirements compared to the traditional division of labour involving 3–4 people.

Processing Capacity: Suitable for PDF20 (0.6–0.8 mm) and PDF30 (0.8–1.0 mm) galvanised steel sheets. The length of the formed flanges is adjustable from 600 to 4,000 mm, with a minimum cross-section of 150 × 150 mm and a maximum cross-section of 1,500 × 1,500 mm. Forming speed is adjustable from 8 to 12 m/min, with a length tolerance of ±0.5 mm per 1,000 mm, a diagonal tolerance of ±0.8 mm per 1,000 mm, and a bending tolerance of ±1 mm per 1,000 mm and ±5°.

The total length of the production line is approximately 25 m, the total width is approximately 6 m, and the total power consumption is approximately 40 kW. A 12-month warranty is provided, and comprehensive commissioning and testing of the entire line is completed prior to the equipment leaving the factory.