Conical Twin Screw and Barrel for Reducer Gearbox HEBEI ZHENPENG INTERNATIONAL TRADING CO., LTD. Base Info Description Depth of nitration0.5-0.8mmHardness of nitration950-1020HVStraight of screw0.015MMFragility of nitrationLess than grade 1Roughness of surfaceRa 0.4umDepth of alloy layer2-3mmHardness of alloyHRC58-62Hardness after hardening and temperingHB260-290Hard chrome plating thickness0.03-0.08mmHardness of hard chrome plating≥950HV Pre：Bimetallic Screw Barrel for WPC Machines Next：WPC (PE+Wood) Twin-Screw Pelletizing Lines
