
HVAC Ventilation System Galvanized/Stainless Steel Round Spiral Air Duct Making Machine. Full-Automatic Operation: Advanced PLC-controlled system for efficient and precise spiral duct fabrication. Wide Diameter Range: Produces ducts from 85mm to 1500mm diameter with customizable options. Material Versatility: Handles galvanized steel sheets with thickness ranging from 0.4mm to 1.2mm. 2-Year Warranty: Comprehensive 2-year warranty coverage for all mechanical equipment. Global Technical Support: 24/7 online service, video guides, and overseas engineer deployment available. Custom Design Service: Experienced designers provide customized solutions for special production line requests. CE Standard Compliance: Machines meet CE standards with enhanced structure, security, and precision. Flexible Voltage Options: Supports multiple voltages including 220V, 240V, 380V, 415V, and 440V.