The difference between a pipe mold spiral duct machine and a steel belt spiral duct machine lies in the method they use to form spiral ducts and the materials they are designed to work with: Pipe Mold Spiral Duct Machine: This type of machine forms spiral ducts by utilizing a pipe-shaped mold. The sheet metal is fed into the machine and wrapped around the mold to create the spiral shape. The edges of the metal are then connected to form a continuous sealed duct. The pipe mold spiral duct machine is typically used for fabricating spiral ducts from galvanized steel or stainless steel sheets. Steel Belt Spiral Duct Machine: In contrast, a steel belt spiral duct machine uses a different method to form spiral ducts. Instead of a pipe-shaped mold, it employs a steel belt that rotates and bends the sheet metal into the desired spiral shape. The edges of the metal are either interlocked or connected through various means to create a sealed duct. Steel belt spiral duct machines are often used for manufacturing spiral ducts from stainless steel or aluminum sheets. Both types of machines are efficient and suitable for mass production of spiral ducts in the heating, ventilation, and air conditioning (HVAC) industry. The choice between a pipe mold spiral duct machine and a steel belt spiral duct machine may depend on factors such as the specific material requirements, production volume, available space, and desired customization options.