Qingdao Yifeng Plastic Machinery Co.,Ltd.is specialized in the design and produce extrusion machine of hdpe multi hole production line.This production line is mainly used in the production of composite fiber casing whichis made of silicone and polyethylene mixture synthesis extrude of a inner wall with permanent solid lubricants(i.e.,siliconecore),themachine structure is reasonable,convenient operation,high automation degree, can achieve high production.Silicone core tube with polyethylene pipe of high strength and high toughness,corrosion resistance,long life good physical and mechanical performance,but also has brasive coefficient, pass through cable quickly,one-time pass through long cable,cost low characteristicand construction.And with all kindsof extrusion line of color marked,facilitating construction and testing,it is a new kind of cable shroud pipes after PVC smooth wall pipe,double corrugatedpipes,multi hole pipes.Widely applied inthe main engineering,highway.