Extruder Barrel and Screw Specification : Ø15mm~Ø500mm Draw Ratio： L/D=7~55  Technical ParameterQuenching and Tempering Hardness：HB280-320Screw Straightness：0.015mmNitriding Hardness：HV850-1000Nitrided Chromium Coating Surface Hardness≥900HVNitriding Depth ：0.45~0.7mmChromium Coating Thickness ：0.025~0.10mmNitridng Brittleness :2 LevelDuplex Alloy Hardness：HRC50-65Surface Roughness：≤Ra0.4Duplex Alloy Depth：0.8~2.0mmMaterials and TechnologiesQuality 38CrMoAIA (41CrAIMo7)SKD61(H13)Quality Duplex Stainless SteelGr12MoV42CrMoQuality Powder Metallurgy Materials40CrHard Metal Cold/Thermal Spraying TechnologyZinc 3# SteelAdvanced Nitriding TechnologyAnti-corrosion and Wear-resisting Duplex Metal Spraying Technology Single Screw Extruder Screw and Barrel is one of the main products of Zhejiang Guangming Plastic Machinery Co., Ltd.with good Wholesale price and quality, factory direct sales. Our company is a professional supplier and manufacturer in China, with various products on sale and Cheapest.
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