Introduction To The Use Of Dth Drill Pipe

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2021-04-22 02:25:45 - Перевод

Top Hammer Drilling Tools is mainly composed of four major assemblies: bypass valve, hydraulic motor, cardan shaft and drive shaft. Screw motor is the main part of drilling tool. Many practical and theoretical analysis results show that if you want to make the motor normally and effectively When working, the pressure drop that each motor can withstand should...

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