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Screw according to different formulas and different products before choosing different compression ratio.
1. base material: 38CrMoAIA, Nitriding treatmeng,surface hardness:HV≥900, nitriding depth:0.5-0.8mm.
2. base material: 38CrMoAIA, welded inlay on the flight,prolong life of screw easy wearing parts of barrel feed inlet made from importde anti-wear alloy can be improved abrasion abrasion performace.
ordinary plastic, PP, PE, ABS, PVC, granulation of raw materials, production pipe, profile, sheet, wood and other extrusion machinery.
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