tungsten concave drill bit online manufacture

6inch PDC Oil Drill Bit Rock Drill Bit Water Drill Bit PDC Bit Characteristics: 1. The taper surface of the drill bit is a shallow taper surface, with strong guidance and a large nozzle structure in the center. ... Read More

Button Bit DTH Hammer Concave Drill Bit Dome Ballistic Button 1. The drilling efficiency is high, the single impact force is large, the slag discharge wind speed is high, the hole bottom is clean, and there is ... Read More

94mm PDC Well Bit Concave Drill Bit Rock Drill Bit Water Drill Bit Characteristics: 1. The top surface of the bit is shallow with 3 small nozzles. and in the circumferential direction of the blades there are 3 ... Read More