DTH Button bits for choice:
2'' DTH Button bits: ø76-ø80: 2.5N / BR2 / CWG76
3'' DTH Button bits: ø90-ø110: Wooke30 / BR3 / Wooke-CIR90 / Mission30 / Cop32 / Cop34 / 3.5N / IR3.5
4'' DTH Button bits: ø105-ø130: Cop42 / SD4 / Wooke40 / QL40 / QL40N / BR4 / Mission40 / 340N / IR340
5'' DTH Button bits: ø133-ø152: Wooke50 / SD5 / QL50 / QL50N / Mission50 / DHD350 / 350N / Cop52
6'' DTH Button bits: ø152-ø254: Wooke60 / SD6 / QL60 / QL60N / Mission60 / DHD360 / 360N / Cop62
8'' DTH Button bits: ø194-ø254: Wooke80 / SD8 / QL80 / QL80N / Mission80 / DHD380 / 380N /
10'' DTH Button bits: ø240-ø311: Wooke100 / DHD120
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 moderatedly abrasive rock.
3. Convex front Spherical + Ballistice
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.