... of nitrided 38CrMoALA wear resistant, corrosion resistant, high strength plastic extruder for pvc pipepvc drainage pipe making machineApplication : This kind of ... , can produce all kinds of polymer products, can produce from HDPE, PP, ABS, PVC, PET, PC, PS and other plastics ... ensure high-performance, low noise and long service life3) For the material feeding section of barrel there’re slotted bushing ...