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[Province: Zhejiang ]   
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screws and barrels
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screws and barrels

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Depth of Nitration Layer: 0.5-0.8mm
Hardness of Nitration: 950-1020Hv
Fragility of Nitration: Less than grade 1
Surface Roughness: Ra 0.4 um
Streightness of Screw: 0.015mm
Surface Hardness of Nitrated Cr coating Layer: >=950Hv
The Thickness of Cr Coating Layer: HRC55-62
Hardness of Alloy Plating: 0.03-0.08mm
Depth of Alloys Layer: >2mm 

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Mr. Charlie Tong (Director)
Tel: 86-574-86365885
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Ningbo Zhenhai Jinyi Mechanical And Electrical Co.,Ltd.
No.158, Qiancheng Road, Jiaochuan Industrial Zone, Zhenhai, Ningbo, Zhejiang, China (Mainland) / 315200
Fax: 86-574-86365887
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