Plastic single screw extruder, Plastic twin screw extruder, plastic extruding machine, screw extruder, single-screw extruder Plastic single screw extruder, Plastic double screw extruder, plastic extruding machine, screw extruder, single ... 38CrMoAlA,or bi-metalic structure design accordingly screw diameter:single screwΦ45-Φ220mm,parallelism twin screwΦ35-Φ135, conic twin screwΦ80/156Φ92/188 ...