Scrw and Barrel for Plastic Board spried
ExtruderBarrelandScrewSpecification:Ø20mm ~Ø300mm DrawRatio: L/D=15 ~ 55 ອໍານາດ ParameterQuenchingandTemperingHardness:HB280-320ScrewStraightness: 0.015mmNitriding Harddness:HV850-1000NitridedChromiumCoati
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