1、 Mechanical composition（General specifications） Z Shape Auto Duct Production Line 7 for Making Square HVAC Duct is processed in a U-shaped manner,Mainly processing air duct board with a width of 1250mm,Galvanized sheet with a thickness of 0.5-2.0mm (stainless steel 0.5-1.5mm),Main components: material rack machine, host, drum 1, small edge Pittsburgh Lock Forming Machine, large edge Pittsburgh Lock Forming Machine, drum 2 , double-sided angle Steel flange machine, double-sided TDF Flange Forming Machine, and bending machine. 2、 External dimensions and motor power（General specifications） Machine size 14m*8m Processing plate thickness 0.5~2.0mm Processing board width 1250mm Processing speed 150-200m ²/ hour Total weight 15t Total power 45kw Factory precision ±0.5/4000 Power demand 380v/50hz Pneumatic pressure demand 6~8 System Taida Hydraulic oil Great Wall 46 # 150L (1)Material rack: Function: to carry coil materials and maintain synchronization with the machine head Single roll carrying capacity ≤ 7 tons Material core:4 pieces Shrinkage adjustment outer diameter of Material core pole: 450-620mm Electrical machinery:1.5kw (4 units) Size :5800*1800mm Weight :1800kg (2)Host: Function: uncoiling, leveling, pressing reinforcement, cutting square mouth (cutting tip mouth), cutting Feed port:1 set Leveling the axis of the reinforcement press:11 pieces Axis size:Φ 100 * 1420 (plated with hard chromium) Corner cutting mold:4 sets (2 sets of sharp edges and 2 sets of square edges) Shear punching plate thickness:0.5-2.0mm Punching device:1 set (punching lifting holes and flange connection holes) Manual adjustment of punching mold, one-way double adjustment fixed circular rail (hard rail) Φ 30 aluminum base Oil pump motor:7.5kw Variable frequency motor: 5.5kw Size:2500*2000mm Weight :2800kg (3)Drum 1: Function: Conveying the next process Stainless steel pipe: Φ 76 * 2000 * 2.6mm Number of drums:30 pieces Electrical machinery:2 pieces（1.5kw/2.2kw） Size:2200*4200mm Weight :800kg (4)Small edge Pittsburgh Lock Forming Machine Function: Processing right angle edges(Two mechanical heads can be converted) Processing plate thickness: 0.5-2.0mm Roller wheel:9 sets (18 pieces) Bearing steel Material Roller wheel size:Φ85*44~Φ100*44 Electrical machinery:2 pieces 4kw Size:950*1400mm Weight :500kg (5)large edge Pittsburgh Lock Forming Machine Function: Processing pittsburgh lock Forming Machine(Two mechanical heads can be converted) Processing plate thickness: 0.5-2.0mm Roller wheel:9 sets (18 pieces) Bearing steel Material Roller wheel size:Φ85*44~Φ100*44 Electrical machinery:2 pieces 4kw Size:1400*4200mm Weight :800kg (6)Drum 2: Function: Conveying the next process Stainless steel pipe: Φ 76 * 2000 * 2.6mm Number of drums:18 pieces Electrical machinery:3 pieces（0.75kw/0.75kw /1.5kw） Size:1300*4000mm Weight :600kg (7）double-sided angle Steel flange machine Function: Processing angle steel flange edges Angle Steel flange machine, manual adjustment, one-way double adjustment, fixed Square rail(hard rail) 30 * 30 * 800 Processing plate thickness:0.5~2.0mm Roller wheel:unilateral 9 sets (18 pieces) Bearing steel Material Roller wheel size:Φ85*44~Φ100*44 Electrical machinery: 4kw Size:2400*1500mm Weight :1000kg Belt length:2690*190*5mm,PVC Bright Green （8）bending machine Function: Folding L-shaped or air duct bending into shape Servo motor: 1.5kw Hydraulic motor:4kw Planetary reducer:PK80 speed ratio 1:20 Variable frequency motor for conveyor belt:0.75kw Transmission:Yingweiteng Size:4800*1800mm Weight :1300kg Belt length:8280*150*5mm,PVC grass green anti slip,Origin Shanghai Mechanical arm cylinder:4 pieces (SC50 * 100 2 pieces,SC50 * 50 2 pieces)

Advantages of products: Duct Three production line is composed of rack,leveling embossing machine,blunt pointed mouth and blunt square opening hydraulic punching machine,hydraulic shearing machine,hydraulic folding machine.Electric control part adopts computer control,the control system with a closed loop feed back system,production of precision and stability is improved obviously.The maximum working speed is 16m/min.Error of plus or minus 0.5mm in length, diagonal error of plus or minus 0.8mm.With a high degree of automation,provincial labor,high efficiency and save materials advantages,very suitable of duct processing factory specialized production batch duct. Main Import Configuration: 1. Electric feeding rack 1(2620*1850*1450mm) 2. Leveling rib pressing device group 3. Hydraulic angle shearing machine,four sets of even die 4. Hydraulic plate shearing device,hydraulic bending device for each group 5. The production of software,a set of computer and control system Main Technical Parameters: Thickness range(mm) Width(mm) Max-working speed(m/min) Coiler max weight(T) Weight（T） Dimension（mm） 0.5-1.2 1300 16 6000x2 3500 5000x2160x1450 0.5-1.2 1600 16 6000x2 4500 5000x2460x1450 Noto:Customers can order the line with different specifications,sheet width and coiler weight. Working Schematic Diagram： Video presentation：

As the HVAC industry embraces Industry 4.0 and smart manufacturing, the demand for Auto Duct Line equipment has surged in recent months. These fully automated duct production systems have become a trending solution for contractors and manufacturers aiming to boost productivity, reduce labor costs, and enhance product consistency. Auto duct lines integrate multiple stages—such as coil feeding, leveling, notching, punching, shearing, and bending—into a single streamlined process. This innovation drastically shortens production time and improves accuracy, especially for high-volume duct manufacturing. With growing construction activity in commercial buildings, hospitals, airports, and industrial facilities, the market need for high-efficiency duct forming systems is stronger than ever. At Hecheng Source Machinery, we offer intelligent Auto Duct Lines designed to meet modern HVAC production requirements. Our machines feature PLC control systems, modular configurations, and options for TDF flange, angle iron flange, or Pittsburgh lock forming. They support fast changeovers and customization to fit different project demands. As a manufacturer with nearly a decade of expertise and exports to over 80 countries, we provide comprehensive air duct production solutions—from spiral duct machines to complete auto duct lines—with reliable performance and 24/7 customer support. Investing in an auto duct line today means staying competitive in a fast-evolving HVAC landscape. Whether you're upgrading your workshop or expanding your production, Hecheng Source Machinery is ready to deliver equipment that helps you grow smarter.

The spiral ductwork machine is specifically designed for the production of spiral ducts—also known as spiral seam thin-walled ducts. The origin of spiral duct technology can be traced back to the military industries of Western countries, where it was initially used in ventilation systems for warships and marine vessels. With broader adoption, spiral ducts gradually found their way into civilian applications such as trains, subways, and mining operations. By the year 2000, usage in the U.S. had surged, with spiral ducts being employed in 95.6% of office buildings, shopping malls, and subway systems. In residential buildings, central air conditioning systems using spiral ducts reached a 72.5% adoption rate. Advantages of the Spiral Ductwork Machine The spiral ductwork machine offers flexible processing of various duct sizes within a defined diameter range—without the need for traditional pipe molds. By adjusting the length of steel coils and making proper setup calibrations, steel strips can be used in place of molds for efficient duct formation. The machine also comes equipped with a high-speed synchronized cutting system that ensures precise cuts according to required duct lengths. Spiral ducts, made from coiled metal strips, feature a spiral seam and thin-walled design with a circular cross-section. These ducts have no welding seams, offer excellent airtightness, and are ideal for both air delivery and bulk material conveyance. As a result, they are becoming the preferred alternative to conventional rectangular ducts. BLKMA's spiral ductwork machine is manufactured to high standards, delivering high output, consistent duct diameters, and superior seam and sealing performance. It can process ducts up to 1.5 meters in diameter and ensures high strength and excellent airtightness. The machine allows for rapid transitions between different duct diameters and includes a high-speed synchronized cutting unit to ensure fast processing and stable performance. Additionally, the machine is environmentally friendly, safe, efficient, and offers a long service life—earning praise from domestic and international clients alike. It has become a trusted solution in the industry. Scheduled Maintenance for Spiral Ductwork Machine Check Belts and Wheels During operation, belts may wear or break, and wheels may deteriorate over time. It’s essential to regularly inspect and replace these components to maintain the machine’s optimal functionality. Replace Lubricating Oil After a period of use, the existing lubricating oil should be replaced. Before adding new oil, thoroughly clean both the internal and external parts of the machine. The oil change interval should be determined based on machine usage, but an annual replacement is generally recommended or adjusted according to the production workload. Inspect Electrical Wires and Switches Wires and switches may loosen or suffer damage during operation. Regular inspection and timely repairs are crucial. Electrical safety is fundamental to the machine's reliable operation, so proactive checks help eliminate potential hazards. The spiral ductwork machine is a specialized piece of equipment designed to transform metal sheets into spiral ducts of varying shapes and sizes. It plays a key role in sectors such as construction, chemical processing, mining, and agriculture. To ensure stable, long-term operation, the machine requires proper usage and systematic maintenance. Maintenance protocols should be tailored to the machine's operational history and aligned with manufacturer guidelines. Routine inspections, cleaning, and adherence to the operation manual are essential to prevent malfunctions and minimize production disruptions. 在住宅建筑中，使用螺旋管的中央空调系统达到了72.5％的采用率。