5 Medium/High Air Pressure DTH Hammers/DTH Drilling Tungsten Carbide Button Bits For Mining/water Well/oil/gas And Construction

5" Medium/High Air Pressure DTH Hammers/DTH Drilling Tungsten Carbide Button Bits for Mining/water well/oil/gas and construction drilling Shank: Wooke50/DHD350/ SD5/QL50/Mission50 Hole range: Ø133-ø152mm Commonly used diameter: Ø140, ø148,ø152 mm Application field: blasting hole, geothermal hole, mining,water well,oil,gas and construction drilling. Face design: flat, convex, concave Inserts design: spherical, ballistic, convex Features:   1.Reliable quality, long service life,  rare abnormal breakage during service life.  2.Good flushing effect to ensure high drilling rate 3.Strict quality warranty and compensation rules Bit face shape selection: 1. Drop Center Bit For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control. 2. Concave Face The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity. 3. Convex Face For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control. 4. Double Gauge Face This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit. 5. Flat Face Bit This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.   DTH Button Bits Size Assortment: Bit Size DTH bits diameter DTH bit Shank 2",2.5" 76mm~80mm CWG76, BR2, DHD2.5N 3",3.5" 90mm~105mm COP34, DHD3.5, Mission30, BR3, Mach33, Wooke30 4" 105mm~130mm COP44, DHD340, DHD340N, Mission40, QL40, SD4, BR4, Mach44, TD40, Wooke40, 5" 133mm~152mm COP54, DHD350, DHD350N, Mission50, SD5, QL50, QL50N, Wooke50 6" 152mm~254mm COP64, DHD360, DHD360N, Mission60, SD6, QL60, QL60N, Wooke60 8" 194mm~305mm COP84, DHD380, DHD380N, Mission80, SD8, QL80, QL80N, Wooke 80 10" 240mm~311mm Wooke 100 12" 305mm~445mm Wooke 120 *Face design and button type and dia. all can be customer made, please contact for more information.