PDC drilling rig ..., high efficiency and wide application. 1. Super long life-as 10 times as cemented carbide drill bits under the same condition. 2. High efficiency-Times of ... ...ficiency and wide application. 1. Super long life-as 10 times as cemented carbide drill bits under the same condition. 2. High efficiency-Times of lifting ... ...e under coal mine. Size: dia 48-dia 270mm
Concave model, Pillar model, Blade model, Expansion model
2. PDC Drill bits (core bits) Application for c... Posted on: 2016-10-20 from China - Hebei
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