Conical Twin Screw for WPC Products Conical Twin Screw Size: 35/75, 45/90, 45/ ... ) Roughness of the surface: Ra 0.4μ M Screw straightness: 0.015mm/m Chrome plating thickness: 0.01 ... inlay on the flight, prolong life of screw. Easy wearing parts of barrel feed inlet made ... Twin screw and barrel made: CINCINNATI, BATTENFELD, KRUSSMAFFEI, BAUSANO and AMUT model spares. Conical Twin Screw for WPC Products ...