... Mining & earthmoving machinery accessories, pump body and valve .aluminum casting part Casting: investment casting ,precision casting, lost ... steel, heat resistant steel ,tool steel ,brass and aluminum ,according to DIN ,EN, ASTM, BS,JCSI. ... , milling, drilling, thread cutting.Surface treatment: glass rays electrolytic polishing, coating, varnishing, bromzing. Passivating, grinding, polishingAnalysis ...