Email: sales@prodrill.com.cn
Tel:0086-18959243380
Addr: Room 805 C1 Wanda Plaza, No.5 Jinzhong Road, Huli District, Xiamen, China
DTH Bit-Numa120-381
- Diameter: 381mm
- Air Holes No.: 4
- Gauge Buttons: 12*18mm
- Face Buttons: 36*16mm
- Approx. Weight: 152.0KGS
- Bit Face Type: Drop Center face
- Carbide Design of DTH Buttons: Dome
Rock drilling tools factory ProDrill manufactures high quality DTH drill Bits with NUMA shank type are available in a various range of sizes and with a number of custom design features for optimum performance in a rock formation, which are designed to match all conceivable applications for water well drilling, stone quarrying, mining and construction. shank adaptor is the most important part of rock driling tools , which will decide rock drill\'s drilling efficiency and cost.
Rock drill bits Shank type: NUMA120; and DTH hammer bits hole diameter: 3", 4", 5", 6", 8"(85mm-350mm).
Concave Face
The all around application bit face designed 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.
NUMA shank DTH drill 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 NUMA shanks Catalogue
