Oil Steel Body PDC Bit 7 Nozzle 5 Blades Dth Hammer Button
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8-1/2in 5 Blade Oil Drill Bit Drilling Machine Diamond Rock Bits 1. The force of the cutting structure is balanced, and the asymmetrical design of the drill blade makes the force of the drill bit balanced and the stability of the drill bit better. 2. The ......
Shaanxi Hainaisen Petroleum Technology Co.,Ltd
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