| Process | Equipment | Precision   Degree | Machining range | 
  | Blank Making | Resin   bonded sand production line;Vertical parting flaskless molding line,146   opening production line;Electric furnace; Furnace cupola; Guillotine   shear,Punching machine; Forge rolling machine; Precision die forging machine; | precision   cast; precision forging; precision molding | All   sorts of casting and forging parts | 
  | Heat   Treatment | Vertical   furnace; Speckled furnace;High frequency quenching furnace | Material   hardness transformation≤HRC1 | Hardening   and Tempering; Quenching; High frequency quenching; Carburizing and quenching | 
  | Machining | Precise   NC machine | Dimesion   tolerance 6 degree; Roughness Ra0.8; Roundness,straightness and concentricity   accuracy≤0.01mm | inner   hole≥5mm, outside diameter ≤800mm | 
  | Grinding machining | NC   excircle grinding machine; Surface grinding machine | Dimesion   precision 5 degree; Roughness Ra0.4 | Outside   diameter 3mm to 320mm | 
  | Teeth-profile Making | NC   gear hobbing maching; gear slotting machine | Roughness   Ra1.6; Concentricity 0.05 | Maximum   module M=10, OD≤1800mm | 
  | Hobbing and drilling | CNC   machine;drilling machine;NC milling machine | Hole   dimesion tolerance 6 degree; positioning accuracy 0.05 | Workbench   leghth 1650mm; width 852mm; minimum diameter 1mm | 
  | Other   Machining | Hydraulic   broaching machine; sawing machine; punching machine; lather labeling machine | keyway   tolerance 7 degree; symmetry degree 0.05 | spline;   straight keyway; spline keyway | 
  | Surface   Treatment | polishing   machine; plating production line; spray-painting line;coating line;oxidizing   line; phosphating line | In   accordance with European standard RoHS. | Surface   polishing; Cr6+free zinc plating,Nickle hard chromium; Decorative chrome   plating;Nickle;Paiting; phosphating; Anodizing;blackening;Dacrotized |