نيتريد برميل المسمار واحد عالية السرعة لآلة النفخ Diameter Φ15mm-350mm Designing Screw structure and compression ratio can be designed according to different products & different output re quirement. Materials 38CrMoAlA (JIS SACM645) SKD61 Application PE , PVC , ABS , Plus fiber ...... Nitride Case Depth 0.5mm-0.8mm Technology ...