Required documents for offer to be provided by customer:
Drawings with formats of IGS (3D), DWG or DXF (Auto CAD 2D), PDF, JPG
Standard of material (Preferable to provide Element Percentage of C, Si, Mn, P, S, etc and Physical/Machanical Properties of the material)
Technical requirements
Unit Weight of Rough Casting
Production technology: Lost-wax casting/investment casting
Main production equipment:
Vertical wax-injectors
Sand glueing tanks
Wax-evaporator
Intermediate frequency electrical induction furnaces
Spectrum analyzer
Shot blast machines
Heat treatment furnaces
Heat treatment water tank
Acid solution and water cleaning tank
Buffing / polishing machines / Electrical polishing
Unit weight: 1.2g~80,000g per piece
Other details:
Taper hole, deep hole, bent hole D>Ø2mm L=1D
Minimum outside radius R0.3mm, minimum inside radius R0.5mm
Minimum thickness of 1.5mm, some parts with minimum thickness of 0.8mm
Tolerance of dimension for cast:
| Dimension Range (mm) | Common Tolerance | Special Tolerance |
| < 25 | +/- 0.25 mm | +/- 0.13 mm |
| 25 ~ 50 | +/- 0.40 mm | +/- 0.25 mm |
| 50 ~ 100 | +/- 0.80 mm | +/- 0.50 mm |
| > 100 | +/- 1 % | +/- 0.5 % |