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Product Name : Extruder Screw Barrel
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Information : Diameter: φ15-φ500 L/D ratio:15-55 Technical Parameter: Hardness After Hardening & Tempering:HB280-320 Nitride hardness: 950-1100HV Nitride layer depth:0.50-0.80mm Nitride brittleness: Less than 2 level Surface roughness: Ra 0.4μm Linearity of screw: 0.015mm/m Bi metallic layer depth: ≥3mm Bi metallic hardness: HRC60-72 Hard-chrome plating hardness after nitriding: 
Company : ZHEJIANG JINGJIN MACHINERY CO.,LTD.
ZHEJIANG JINGJIN MACHINERY CO.,LTD.
86 13867208622
