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...Drill Bits HTD Hole Openers For Horizontal Directioal Drilling Features Quality: More than 40 Years engineer to make sure the quality, 100% inspection Carbide Button: Spherical, Ballistic, Semi-ballistic. Bi...
219mm Concentric overburden drill bit with blocks Specification 1.Face: Flat,Convex,Concave,Drop-center. 2.Carbide Button Shape: Spherical,Semi-ballistic,Ballistic and Two-step 3.Bit Shank: COP64/ DHD360(TH6)/ ...
273mm Concentric overburden drill bit with blocks Specification 1.Face: Flat,Convex,Concave,Drop-center. 2.Carbide Button Shape: Spherical,Semi-ballistic,Ballistic and Two-step 3.Bit Shank: COP/DHD/QL/SD/MACH/B...
O.D. 355mm Concentric overburden drill bit with blocks Specification 1.Face: Flat,Convex,Concave,Drop-center. 2.Carbide Button Shape: Spherical,Semi-ballistic,Ballistic and Two-step 3.Bit Shank: COP/DHD/QL/SD/M...
O.D. 325mm Concentric overburden drill bit with blocks Specification 1.Face: Flat,Convex,Concave,Drop-center. 2.Carbide Button Shape: Spherical,Semi-ballistic,Ballistic and Two-step 3.Bit Shank: COP/DHD/QL/SD/M...
Concentric overburden drill bit with blocks Specification 1.Face: Flat,Convex,Concave,Drop-center. 2.Carbide Button Shape: Spherical,Semi-ballistic,Ballistic and Two-step 3.Bit Shank: COP/DHD/QL/SD/MACH/BR A B ...