| 1. | The machine equips with big - digmeter screw . that is made by the special hardening process , which posses not only good corrosion resistance and abrasion resistance but also high layout , lower coast of power , and better plastify 带有屏蔽混练段的大直径螺杆,经特殊硬化处理不仅有良好的耐腐蚀性和耐磨性,而且具有高产出、低能耗,塑化好等优点。 |