Conical Twin Screw for WPC Products Conical Twin Screw Size: 35/75, 45/90, 45/ ... 92/188, 95/188 TECHNICAL DATA Depth of nitration case: 0.4-0.7mm Hardness of nitration: HV900 ... Welded 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 ...