... resistance after nitrogen treatment and prcision finishing .The auxiliary machine has a platform working table for makng operation easy and ... is equipped with bubble stabilizing ring .Double rolling and double cuttng in winding ,and it adopts torque motor ... head:Φ120-220mm Gross power:42kW Weight of machine:3,800kg Overall dimension(LxWxH):6,800x2,700x5,500mm Rotary Die Film Blowing ...