... Parts / ball Valves / stainless steel sand casting parts / machinery parts / CNC machining parts, Steel Investment Casting / lost ... Tensile Test, Dimension Inspection, Hardness TestingSurface TreatmentHeat Treatment, Machine, Polishing, Chrome, Zinc, Nickel PlatingPackingCartons, Wooden Case ... Spectral analysis of rawmaterial and liquid melt, batch before casting4. Control spectral and thermal analysis ...