3 Inch DTH drilling bit: WOOKE30, DHD3.5, MISSION30, BR3,3.5N

Hole range: Ø90-ø110 mm
Commonly used dia.: Ø90, ø100, ø105 mm

Bit head design and selection: 
1. Flat front spherical
Application: For drilling in hard and abrasive rock. 
2. Flat front spherical + ballistic
Application: For drilling in medium-hard to hard and moderately abrasive rock. 
3. Convex front spherical + ballistic
Application: For drilling in medium-hard and moderately abrasive rock. 
4. Convex front ballistic
Application: For drilling at high penetration rates in non abrasive rock. 
5. Concave front spherical
Application: For drilling in medium-hard, minimum hole deviation control. 

DTH Drill Bit for Rock Mining:

• Button Shape: Spherical, Ballistic, Convex, Concave
• Bit Shank: WOOKE, QL, SD, DHD, MISSION, BR, etc.
• Mainly used for quarrying, ore mining, coal mining, soft, medium-hard, and hard rock, blast hole drilling and water well drilling project, marble quarry or well drilling and other construction projects, geological exploration, etc.
• Our cemented carbide buttons have very good wear-resistant, can be ground time after time and have a longer service life. Using the specially processed formula, our carbide buttons can meet requirements of various rocks.
• Buttons are strong in the mining process, ensuring long  service lifetime.
• A lot of grades can be chosen according to different applications.
• Exactly s estion for the button used for soft, medium-hard, and hard rocks. Durable performance, wear resistant and withstanding large impacting force.
• Very good prices according to market situation.
• Short delivery time.
• The best and reliable after-service

About Payment

  We accept T/T (Telegraphic Transfer) or L/C at sight