... cast iron,non-ferrous metal,alloy and unalloyed materials.also qualified for wire drawing for the steel and non-ferrous metal.electric drill ... of cast iron,non-ferrous metal,nonmetal materials,drills of steel,non-ferrous metal and pies,various drills for geology use,tools ... of tungsten carbide grades in-house including the popular ISO application grades of K10, K20, K30, K40, P10, P20 & P30/40 ...