Extruder Barrel and Screw Specification : Ø15mm~Ø500mm  Draw Ratio: L/D=7~55    Technical Parameter Quenching and Tempering Hardness:HB280-320 Screw Straightness:0.015mm Nitriding Hardness:HV850-1000 Nitrided Chromium Coating Surface Hardness≥900HV Nitriding Depth :0.45~0.7mm Chromium Coating Thickness :0.025~0.10mm Nitridng Brittleness :2 Level Duplex Alloy Hardness:HRC50-65 Surface Roughness:≤Ra0.4 Duplex Alloy Depth:0.8~2.0mm Materials and Technologies Quality 38CrMoAIA (41CrAIMo7) SKD61(H13) Quality Duplex Stainless Steel Gr12MoV 42CrMo Quality Powder Metallurgy Materials 40C…

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Zhejiang Guangming Plastics Machinery Co.,Ltd.

Zhejiang Guangming Plastics Machinery Co., Ltd. (Guangyou Screw) was established in 1992. After…
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