Email: sales@prodrill.com.cn
Tel:0086-18959243380
Addr: Room 805 C1 Wanda Plaza, No.5 Jinzhong Road, Huli District, Xiamen, China
DTH Bits-DHD380-275
- Code No.: DHD380-275
- Diameter: 275mm
- Air Holes No.: 2
- Gauge Buttons: 12*18mm
- Face Buttons: 8*16mm
- Concave Buttons: 20*16mm
- Carbide Design: Dome
- Face Design: Concave
- Shank Type: DHD
- Application: Water Well Drilling, PV (Photovoltaic) Micro Pile and Solar Energy Hole Drilling
Down-the-hole (DH) drills consist of an DTH hammer DTH drill bit, and DTH drill rod. The slewing mechanism of the drilling rig drives the DTH drill to rotate, while the DTH hammer submerges into the hole, directly impacting the drill bit for drilling operations. High-pressure DTH hammer typically consist of front and rear connectors, inner and outer cylinders, a piston, and a check valve. Except for seals, the parts are primarily made of alloy steel bars, forgings, and seamless steel pipes. Major grades include: 35CrMo and 20CrMnMo (front and rear connectors), 20CrMo (inner cylinder), 42CrMo (outer cylinder), 20Ni4Mo, and 23CrNi3Mo (piston), etc. Because DTH drill bits are directly impacted by the piston, the stress state is complex, requiring strict processing. The drill bit body is made of materials such as 18~25CrNi3Mo, 22~25CrMnSiNi2Mo, 20CrNi4Mo, 24SiMnNi2CrMo, and 20Ni4Mo.
Rock drilling tools manufacturer ProDrill has a comprehensive range of DTH drill bits with DHD shanks type for a wide range of hole sizes, which have been designed to match all conceivable applications for water well industries, mining and construction.
Shank types: DHD3.5, DHD340A, DHD350R, DHD360, DHD380.
DTH bits hole diameter: 3", 4", 5", 6", 8"(85mm-305mm)
Concave Face
The all around application rock drill bit face specifically for medium hard and homogeneous rock formations. Good hole deviation control and good flushing capacity.
Dome/Hemispherical Buttons
Universal buttons for all rock formation, best suited to hardest and very abrasive rock formation.
DHD shank DTH hammer bit with concave face, dome carbide buttons for blasting bore holes, water well drilling.
For more details please watch PDF online: DTH hammer bits with DHD shanks Catalogue
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