barras de perforación de tierra de precisión

1.Downhole drilling machine: When drilling a downhole gun hole with a aperture less than 150 mm, in addition to the application of a rock drill, it can also be used to drill a small diameter of 80 ~ 150 mm. When drilling a gun hole with a diameter of less than 70 mm in coal or softer mineral rock, it is generally used to drill or air drill, driven by a motor (or air motor) to drill the drill pipe, and the rock (coal) chips drilled out are discharged through the spiral groove on the drill pipe.

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Rubber-lined pumps are specifically engineered with an inner lining made of high-quality rubber. This lining acts as a protective barrier between the pump components and the fluids being transferred. The primary reason for using rubber as a lining material is its excellent resistance to abrasion, corrosion, and wear. Compared to traditional metal pumps, rubber-lined pumps can significantly extend the lifespan of pump components, reducing maintenance costs and downtime.


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Foraging, the act of searching for and gathering wild food resources, has gained popularity in recent years. As people become more aware of the benefits of consuming locally-sourced and sustainable food, there’s a growing interest in unique foraging methods. One such method that stands out is spiral foraging, a technique that not only enriches the foraging experience but also emphasizes ecological balance and sustainability.


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