1. Brief description CM-M Spiral tube machine is used to produce tube with inner diameter of 50-260mm through changing mandrel. It consists of paper stands, gluing stands, tube forming device and cutter. 2. Technical parameters Model: CM-M Inner diameter of tube: 50mm-260mm Thickness of tube wall: 1mm-12mm Speed: 1-15m/min Power: 11KW, 380V 50HZ