DTH Button Drill Bits

DTH Hammer Button Bits

There are various types of down-the-hole DTH drill bits, including end face convex type, end face flat type, end face concave type, and end face deep concave center type, each with its specific application scenarios. For example, the concave end face down-the-hole drill bit forms a mild nucleation effect during the rock drilling process, maintains the centering performance of the drill bit, has good powder removal effect, and fast drilling speed. It is the most commonly used type in the market. It can quickly and accurately complete drilling operations, improve construction efficiency and reduce construction cost.

As an efficient and reliable drilling equipment, the down-the-hole DTH bit is widely used in various engineering fields, such as metallurgy, coal, chemical industry, building materials, copper mines, iron mines and other mines and water conservancy, hydropower, roads, railways, national defense, construction and other projects. In addition, down-the-hole drill button bits are also widely used in open-pit mining, quarries, support of excavation pillars, urban construction, rivers and other projects to drill holes in rocks, which can be filled with explosives to prepare for subsequent blasting operations.

HAMMER INCH BIT DIA (MM) BIT DIA (INCH) SHANK MODELS
1″ 64MM-76MM 2 1/2″-3″ BR1
2″ 76MM-90MM 3″-3 1/2″ HD25/HD25A/BR2
3″ 85MM-105MM 3 2/5″-4″ DHD330/COP32/BR3
3.5″ 85MM-110MM 3 2/5″-4 1/3″ DHD3.5/COP34/HD35/IR3.5/QL30/Mission30
4″ 105MM-140MM 4″-5 1/2″ DHD340A/COP44/HD45/IR340/QL40/TD40/SD4/MISSION40/BR4
5″ 127MM-156MM 5″-6 1/8″ DHD350/COP54/HD55/IR350/QL50/SD5/MISSION50
6″ 152MM-203MM 6″-8″ DHD360/COP64/HD65/IR360/QL60/SD6/MISSION60
8″ 195MM-280MM 7 2/3″-11″ DHD380/COP84/HD85/IR380/QL80/SD8/MISSION80
10″ 254MM-325MM 10″-13″ DHD1100/SD10/NUMA100
12″ 305MM-381MM 12″-15″ DHD1120/SD12/NUMA120/NUMA125A
15″ 530MM-660MM 20 7/8″-26″ HD330A
24″ 775MM 30 1/2″ HD525