Sintered and finish tungsten rings: Materials: virgin cemented carbide, tungsten carbide alloy and nonmetal Used in geological prospecting, machinery/tool manufacturing and serves as drill bit in wind drill and electric drills for coal digging Fit for precision lathe are used in nonstop cutting of die-cast iron Semi-precision, precision, and small-section precision lathes are used in interrupted cutting and whirling of rough turn; The grade, performance and application of carbide alloy. Pp bag, then carton or as special requirement.
