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Después de confirmar que la broca de taladro contacta con la parte inferior del pozo, use una velocidad de aproximadamente 50R/min y una presión de perforación de 5-20kn para moler en la parte inferior del pozo, con un metraje de 0.5-1.0m.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.