Home   Equipment   Information   Download   Contact Us         PRODUCTS   Rock drilling tools     Tapered drilling tools     Thread drilling tools   DTH drilling tools     High air pressure DTH drill bits     Middle-low air pressure DTH drill bits   Roller bits     Mining     Hydrogeology     Oil and gas     Raise drill   Cutting tooth     Mining     Rotary drilling     Graders     Road milling   Construction tools     Shield cutter     Civil engineering tools     Others   PDC drilling tools     PDC anchor bits     PDC full face drilling bits     PDC core bits         Others           CIR Series Low Air Pressure DTH Bits               Concave   Flat   Convex           Type Dia. (mm) Spline No. Weight (kg) CIR65 68 6 2.50 CIR70 76 6 3.40 CIR80 83 6 3.45 CIR80X 83 6 3.50 CIR90 90 6 3.50 CIR100 100 6 4.50 CIR130 130 6 9.50 CIR110 110 6 6.40 CIR120 123 6 8.50 CIR110W 110 6 6.50 CIR120W 123 6 8.80 CIR150 155 6 12.0 CIR150A 155 6 12.5 CIR160 165 6 14.0 CIR170 175 6 15.5 CIR170A 185 6 16.0 CIR200W 200 6 48.0           We can design and manufacture according to customer's requirement of the Bit Dia, No. air holes, carbide button shape and the face shape.