Core drills are made of superior materials and produced by hot-pressed technology.They are widely used for mading holes in concrete, refractory arble and granite.

• 打孔钻采用热压工艺制造,使用优质原料和优良的工艺,它广泛应用于水泥,耐火材料,大理石,花岗岩等材料的钻孔。