Segment screw for twin compounding extruder. dia25-133mm,Kinds of single key, head Spline, Hexagon, Involute Spline ect. Segment ... replaced conveniently. Such design makes it possible to process several kinds of materials with one screw.Base material 38CrMoAlA, Welded inlay on ... the flight, prolong life of screw. Easy wearing parts of barrel feed inlet made from imported anti-wear alloy can ...