1. high section cutting efficiency 2. with particles of uniform diameters This set of machinery is the special device to make natural gas pipeline PP glue, PE glue and jacket materials, adopting the advanced technologies at home and abroad. It can automatically feed the materials, exhaust the vacuum gas, change the nets hydraulically, alert for the operator automatically, control the temperature and convert the frequency. The daily product capacity can reach as much as 3-4 tons. The screw is specially designed. It is corrosion resistant and resists the die corners. It has the advantages of good mixing effects, high section cutting efficiency with particles of uniform diameters.