
Air Duct Making Machine Spiral Tube Former Duct Machine. Customized Options: Machine is fully customized to meet specific production needs. Aluminum Alloy Mould: Forming head mould offers optional aluminum alloy casting for durability. Patented Flying Slitter: Equipped with a patented flying slitter for efficient cutting. High Corrosion Resistance: Main parts made of high tool steel with special quenching treatment. 24/7 Technical Support: Engineers available for on-site training and 24-hour telephone/email support. Factory Direct Sales: Direct manufacturer sales with flexible payment terms to reduce customer pressure. Large Stock Availability: Over 100 units kept in stock due to direct manufacturing capability. Quality Guarantee: 1-year warranty covering free replacement of broken parts caused by quality issues.