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Place of Origin : Hunan, China
Brand Name : SOLLROC
MOQ : 1
Price : $280-300
Bit diameter : 305-381mm
Weight : 130-187kg
Flushing holes : 3-4
Gauge buttons : 3-4*32-48mm
Front buttons : 15-16*19mm
Button diameter : 16-19mm
Material : Special steels, carbide
Manufacturing method : CNC machines
Design : Simple, reasonable
Air consumption : Low
Drilling smoothness : Smooth
Impact power : Maximum
Penetration rate : High
Packaging : Carton+plywood case
Bit type : SD12 concave face
Sollroc , with more 10 years of experience ,is one of the professional manufacturer and supplier of high performance rock drilling tools like: DTH hammers and bits, RC hammers and bits, DTH drill rods and top hammer drilling tools. Our tools are widely used in different drilling applications including mining, quarrying, water well drilling, geotechnical industries and etc.
Sollroc is specialized in designing, manufacturing and developing equipments and accessories for standard models as well as the special needs of clients and provides them with the best suggestions and solutions. We practice strict and stringent quality control during manufacturing and adhered to recognized and approved quality control systems. Each of our products follows the quality requirements and procedures to ensure finished products are durable and superior up to standard.
We are dedicated to offering our customers only premium quality products and services to enable them to achieve the highest possible productivity for their business and projects. If you are looking for the best, fastest and most productive drilling tools in the world, Sollroc should be your best choice and preference.
Strict quality controlling
Selected high quality special steels and carbide
Produced by CNC machines
Simple and reasonable design, Low problem rate
Low air consumption, smooth drilling, Maximum impact power, High penetration rate
12 inch DTH bit-The data is referenced by SD12 concave face bit.
Bit diameter | Flushing holes No.*Button Dia. mm | No.*Button Dia. mm |
Weight(kg) | ||
mm | inch | Gauge Buttons | Front Buttons | ||
305 | 12” | 3*32 | 15*19 | 27*18+9*16 | 85 |
311 | 12 1/4” | 3*32 | 15*19 | 27*18+9*16 | 91 |
330 | 13” | 3*32 | 15*19+12*19 | 27*18+16*16 | 95 |
350 | 13 3/4” | 3*32 | 15*19+12*19 | 28*18+20*16 | 97 |
356 | 14” | 4*48 | 16*19+16*19 | 28*18+20*16 | 98 |
381 | 15” | 4*48 | 16*19+12*19 | 42*18 | 101 |
mining, blasting hole drilling,construction water well drilling,exploration,Geological Drilling ,forepoling
piling, micropilling and underpinning,thermal well drilling, anchoring,horizontal drilling,site investigation


Carton+plywood case
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12 Inch 305-381mm DTH Drill Bits for Mining Drilling with 130-187kg Weight and Concave Face Design Images |