Machine barrel and screwarbor of extrusion machine both adopt quality alloy steel, with nitriding and fine machining.
挤出机的机筒、螺杆均采用优质合金钢，经氮化和精密加工。
2
Through research a new multifunctional double screwarbor extruder was invented. It could be used as both one-way double screwarbor extruder and two-way double screwarbor extruder.