... designed according to different products and ingredients. Extruder screw design for 65/132 conical double ... type: Gradual type, mutant type, wave type, barrier type, double screen type, shunt type, separation type, exhaust type, pin type, mixed type, double- head type, three-head type, multi head type etc. Extruder ... pipe,50-300 high Calcium Profile,soft PVC sheet, PVCfoaming boardetc. PP,PE,ABS,PVC, ...