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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 www.drillingrigts.com 3123981177@163.com
