Active Member
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[China]
Address: NO.19 ,Houdong，Dongpuyu Village， Xindu town，Licheng District, Putian City，Fujian，China
Contact name:
Putian Qideli Drilling Tools Co., Ltd. |
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Water well drill bits without foot vlave type HD85A-203mm
, Pneumatic drill bit
DTH(Down the Hole) hammer is used for drilling holes through a wide
range of rock types, the variety of which continues to extend well
beyond the original conception of early blast hole drilling.
Down-the-Hole refers to where the hammer action occurs when
compared to drifter hammers, which hammer on top of the drill
string. The DTH hammer piston always makes direct contact with the
drill bit and there is generally no loss of transmitted energy as
the hammer drills deeper, as is the case with drifter (top hammer)
rigs.
Product specification:
| QIDELI DTH Bits Specifications | |||
| Hammer Size | Bits diameter | Shank | |
| Metric | Inch | ||
| 1" | 64mm-70mm | 2 1/2"-2 3/4" | BR1 |
| 2" | 70mm-95mm | 2 3/4"-3 3/4" | MACH20/BR2 |
| 3" | 90mm-102mm | 3 1/2"-4" | COP32/COP34/MACH303 |
| M30/DHD3.5/BR3 | |||
| 4" | 105mm-152mm | 4 1/8"-6" | COP44/DHD340/MACH44 |
| SD4/M40/QL40 | |||
| 5" | 133mm-165mm | 5 1/4"-6 1/2" | COP54/DHD350R/MACH50 |
| SD5/M50/QL50/BR5 | |||
| 6" | 152mm-254mm | 4 1/8"-10" | COP64/DHD360/SD6 |
| M60/QL60/Bulroc BR6 | |||
| 8" | 203mm-330mm | 8"-13" | COP84/DHD380/SD8 |
| QL80/M80/M85 | |||
| 10" | 254mm-380mm | 10"-15" | SD10 |
| NUMA100 | |||
| 12" | 305mm-508mm | 12"-20" | DHD1120/SD12 |
| NUMA120/NUMA125 | |||
| Notes: | |||
| Metzke, Remet thread is available! | |||
| Any special size of DTH bits will be available by requests. | |||
Bit Face Shape Selection:
Drop Center:
For High penetration rates in soft to medium hard and fissured rock
formations. Low to medium air pressure. Maximum hole deviation
control.
Concave Face:
The all round application bit face specifically for medium hard and
homogenerous rock formations. Good hole deviation control and good
flushing capacity.
Convex Face:
For high penetration rates in soft to medium hard with low to
medium air pressures. It is the most resistance to steel wash, and
may reduce the load and wear on the gauge buttons, but poor hole
deviation control.
Double Gauge Face:
This kind of face shape is suitable for fast penetration rates in
medium to hard rock formations. Designed for high air pressures and
good resistance to steel wash step gauge bit.
Flat Face:
This kind of face shape is suitable for hard to very hard and
abrasive rock formations in applications with high air pressures.
Good penetration rates an resistance to steel wash.
Pineapple Face:
The Pineapple Bit can be dressed with ballistic buttons for use in
soft to medium hard formations where fractured rock can be
expected, or can be supplied with spherical buttons for hard and
abrasive formations.
DTH drills are classified into high-pressure down-the-hole drills
and low-pressure down-the-hole drills. At present, the
polycrystalline diamond downhole drill bit is better, with high
strength, high hardness, strong wear resistance, impact resistance
and good self-sharpening, and its wear resistance is 5-20 times
higher than that of cemented carbide. You can consider ROSCHEN
Diamond DTH bit, improve work efficiency, reduce consumption,
reduce the time to replace the drill and get lower drilling cost!
Main dimension:
About us:
Putian Qideli drilling tools Company was founded in 2010, is
specialized in the production and operation of mining drilling
tools, research and development-oriented enterprises. 20 years, the
production of chisel-bits, cross-bits, button bits, thread bits,
PDC bits high and low air pressure DTH bits, DTH hammer, drill
rods, etc, are widely used in energy, metallurgy, geology, coal,
water conservancy, chemical industry and the mining, road
construction, has been unanimously endorsed by the majority of
users. Basing on our complete product and excellent quality, We
have a certain domestic markets, also export to Russia, Japan, Southeast Asia and other regions alsowhile
