Spiral Tube former is adapted with hydraulically roll-and-shear cutting which makes cutting edges smoothly and without burrs. Process is no sparks and noises, even safety. With fixed mould which makes the dimensions of ducting precisely and unitely, also process is even stable and speedy; Exchanging different sizes molds, then will be convenient for adjusting spiral angle ,being adapted with automatic way for better agility and precision. If you are interesting our machine, pls feel free to contact with us, jv@jack-aiva.com / whatsapp +86 13915206868