Drilling bit

PDC drill bits: New products with super long life, high efficiency and wide application. Super long life-as 10 times as cemented carbide drill bits under the same condition. High efficiency-Times of lifting the drilling machine could be reduced sharply, and the average time efficiency could be increased more than 2 times. Wide range of application-it could have a penetration of rock formation with f ?12,especially for the rock formation with f=5-10. 1. PDC drill bits (non-core bits) Application for penetration of gas hole, water-discharging hole, and grout hole under coal mine. Size: dia 48-dia 270mm Concave model, Pillar model, Blade model, Expansion model 2. PDC Drill bits (core bits) Application for core drill of coal system stratum with hardness coefficient f<10 in geological exploratory. Size: dia 56- dia 133mm