DTH hole opener bits are commonly used for water well, foundation etc drilling application, main function is to enlarge the sizes of a pilot hole while using less powerful equipment.
Hammer shank |
Guide diameter (mm) |
Reamed diameter (mm) |
DHD3.5 |
80 - 110 |
130 - 165 |
DHD340, QL40, SD4, Mission40 |
82 - 115 |
165 - 178 |
DHD350, QL50, SD5, Mission50 |
75 - 138 |
152 - 216 |
DHD360, QL60, SD6, Mission60 |
85 – 2 54 |
191 - 381 |
DHD380, QL80, SD8, Mission80 |
140 - 300 |
200 - 381 |
DTH hole opener bits ordering guide:
Hammer shank + Guide diameter + Reamed diameter. I.E DHD360 140mm to 292mm.
Contact: Mr. Peter Chan
Phone: +86 851 8577 3056 / 8569
Email:sales@rotarypercussivedrill.com
Add:No.17, 21 floor, unit 1, 1 building, M district, xiaochehe street flower orchard project, Nanming district, Guiyang City, Guizhou Province, China.