Segment screw for twin compounding extruder. dia25-133mm,Kinds of single key, head Spline, Hexagon, Involute Spline ect. Segment ... Φ25-Φ133mmKinds of single key, head Spline, Hexagon, Involute Spline ect.,The building block screw consists of core spindle and several hollow ... components adopts building block type, which can be mounted and replaced conveniently. Such design makes it possible to process ...