Zhoushan Changjia Plastic machinery Co.,Ltd. Bottle Blowing Machine Barrel Machine Use：extruder、injection molding machine Material：38CrMoAl Processing range：Ф12mm - Ф300mm Screw effective length：12000mm Nitration case depth：0.4mm-0.7mm Nitridation hardness：950-1100HV Chromium coating thickness：0.02mm-0.20mm Surface roughness：Ra 0.4μm Screw straightness：0.015mm/m Nitriding Bottle Blowing Machine Barrel Machine Screw diameter：Ф12mm - Ф300mm Application： extruder、injection molding machine Material：38CrMoAl Birthplace：Zhejiang Province, China (mainland) High export efficiency Bottle Blowing Machine Barrel Machine