- Plastic Processing Machinery Parts[104]
- Plastic Product Making Machinery Parts[38]
- Screws[19]
- Drums[1]
- Double-Sided PCB[2]
- Tool Parts[1]
- Shafts[1]
- Plastic Extruders[10]
- Curb & Paving Stone Forming Machinery[2]
- Resistors[6]
- Pipe Making Machinery[2]
- Plastic Granulators[2]
- FPC[1]
- Other Fasteners[1]
- Metal Processing Machinery Parts[2]
- Rubber Processing Machinery Parts[9]
- Plastic Blowing Machinery[1]
- Used Plastic Extruders[1]
- Contact Person : Ms. Wang Mia
- Company Name : Zhoushan Zhongyang Screw Manufacturing Co., Ltd.
- Tel : 86-574-88114868
- Fax : 86-574-88114878
- Address : Zhejiang,Ningbo,Room 408,Unit 10,Jinshuiwan Building,Changfeng,Yinzhou District
- Country/Region : China
- Zip : 315000
machine screw
Detailed Product Description
Zhongyang screw manufacturing co.,ltd insisted in "quality leads to develop, credit leads to market" all the time. We manufacture screws and barrels for many kind of machinery such as extruder, injection machinery, plastic and rubber processing machinery. If you have any requirement, you can contactr me. We also can design according to your specication. Please view technicals and parameter for some of our screws and barrels.
Material: 38CrMoAlA 40CrMo 42CrMo high quality alloy steel
Technology: Nitriding treatment, alloy coating spraying, heating treatment, screw fully hardening,
Depth of nitrition layer: 0.5-0.8mm
Nitriding treatment, surface hardness: HV≥900-1000
Fragility of nitrition: Less than grade 1
Surface roughness: Ra 0.4um
Straightness of screw: 0.015mm
Surface of hardness of nitrated Cr coating layer: ≥950HV
Hardness of Cr coating layer: HRC55-62
Thickness of alloy plating: 0.03-0.08mm
Depth of alloy layer: 2mm
