... powder Chemical Composition: WC, CO Application:carbide blade used in sewing machine IntroductionFound in 1990, ... disc cutter,tungsten rods,indexable inserts,carbide brazed tips,tungsten carbide flats/bars/plates,in addition, ... , cutting tool tips, and various non-standard tungsten carbide, drills, carve drills, tool drills etc. Our ... and punching and impacting. tunggsten carbide blade for sewing machine