1.Rock tools for furnace 2.Long working life 3.ISO9001 certificate 4.Good price ... )Offer ir hammers,DHD3.5,DHD340a,DHD360,DHD380,and low pressure hammers CIR65a, CIR90, CIR110, CIR150,CIR170etc,DTH drill bits:60mm ... dia: 19.4mm, 25mm,30mm,33mm,38mm,etc.8. Blast furnace tap hole drill tools.(Rod, Cross type bits, button bits ...