Diameter: ?15-?500 L/D ratio:15-55 Technical Parameter:Hardness After Hardening & Tempering:HB280-320 Nitrided hardness: 950-1100HV Nitrided layer depth:0.50-0.80mm Nitrided brittleness: Less than 2 level Surface roughness: Ra 0.4?m Linearity of screw: 0.015mm/m Bimetallic layer depth: ?3mm Bimetallic hardness: HRC60-72 Hard-chrome plating hardness after nitriding: ?950HV Chrome-plating layer depth: 0.025~0.10mm Product classification:According to different ingredents and products the screw can be chosen: general type, pin type, barrier type, separation type, and gas exhausting/vented type, etc.
JM SCREW is the largest manufacturer in China that specialize in manufacturing Screw & Barrel for plastic and rubber machinery with best quality and best price.
No.18,,Dafeng Road,,Xihou Industrial Zone, Jintang Town,,
ZHOUSHAN, ZHEJIANG
Phone: +86 580 8050975, 8050975
