DTH Rock Drilling Hammer - china-buttonbits.com
DTH (Down The Hole) Hammer. The “DTH” is theabbreviation of “Down The Hole” and sometimes it is also called “RAB” in somemarkets, then the “RAB” is short for “Rotary Air Blasting”. Down the hole (DTH) hammers are widely used for mining, quarrying, construction, civilengineering and water well drilling.
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