The spider is made of stainless steel or high-quality carbon steel.Quality and price is our vantage. spider clamp Casting: investment casting ,precision casting, lost wax casting ,soluble glass process complex shell process.Materials: stainless steel ,carbon steel ,alloy steel, heat resistant steel ,tool steel ,brass and aluminum ,according to DIN ,EN, ASTM, BS,JCSI.Piece numbers: small, medium and large series.Process: cast, machining, turning, milling, drilling, thread cutting.Surface treatment: glass rays electrolytic polishing, coating, varnishing, bromzing. Passivating, grinding, polishingAnalysis wet chemically or by x-ray spectrometer. 3-coorcdinate. Computerised numerical. Control measuring ,machining ,pressure inspection up to 200bars ,mechanical values for tensile strength. ,yield stress ,notched bar impact tenacity, x-ray,metallograph.Quality control: According to ISO 9001 2001

stainless steel spiders,spider clamp