... 250kg/h production speed:3-15m/min pipe:32/26 34/28 40/33 50/40 The line is mainly used for ... the protection of light and electric cable, HDPE silicon core pipes are characterized by corrosion-resistance, agereistor little friction coefficient ... extrusion,cooling and finalizing the design,drawing and winding,the production line is characterized by high automaticity,even plasticzation,long life, ...