Conical Twin Screw for WPC Products Conical Twin Screw Size: 35/75, 45/90 ... , 45/100, 50/105, 51/105, 55/110, 60/125, 80/143, 80/156, 92 ... Roughness of the surface: Ra 0.4μ M Screw straightness: 0.015mm/m Chrome plating thickness: 0 ... performance. Twin screw and barrel made: CINCINNATI, BATTENFELD, KRUSSMAFFEI, BAUSANO and AMUT model spares. Conical Twin Screw for WPC ...