... steel.Quality and price is our vantage. spider clamp Casting: investment casting ,precision casting, lost wax casting ... , bromzing. Passivating, grinding, polishingAnalysis wet chemically or by x-ray spectrometer. 3-coorcdinate. Computerised numerical. Control measuring ,machining ... strength. ,yield stress ,notched bar impact tenacity, x-ray,metallograph.Quality control: According to ISO 9001 2001 ...