... is same design to Spiro Swiss, roll shear without noise,auto unloading. This spiral tubeformer ZHTF-1500II is same design to ... Swiss, roll shear withoutnoise, auto unloading, light aluliminum alloy moulds,etc. Spiral tubeformer, spiral duct forming machine, HVAC machine, air conditioning duct machine2.1 ... : 125W2.11 Power of material feeding motor: 125W Helix tube forming machine