подводной отверстие.

  • 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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    As the demand for minerals escalates, so does the need for environmentally responsible mining practices. Drilling machines today are designed with environmental sustainability in mind. Advances in technology have led to more efficient water usage, lower emissions, and reduced noise levels. Furthermore, many drilling operations now incorporate measures to minimize land disturbance and rehabilitate sites after drilling activities are completed.


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    Trong ngành công nghiệp hiện đại, máy nén khí đã trở thành một phần không thể thiếu. Với sự phát triển nhanh chóng của công nghệ, máy nén khí di động diesel đã nổi lên như một giải pháp tuyệt vời cho nhiều ứng dụng khác nhau. Dưới đây là một cái nhìn tổng quan về máy nén khí di động diesel, lợi ích của nó, và một số ứng dụng phổ biến.


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    The DTH hammer operates through a system of compressed air. High-pressure air is directed down the drill string, powering the hammer at the end of the drill bit. The hammer strikes the bit with considerable force, fracturing the rock immediately beneath it. As the bit penetrates further, the broken rock is then cleared from the hole by the same air stream, allowing for continuous drilling without the interruptions often associated with other drilling methods.


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  • An oil seal is designed to perform three major functions: to prevent lubricants from leaking outside the seal even under high pressure, to act as a barrier to retain the lubricating oil, and to prevent dirt and other contaminants from entering the unit.

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  • See here for more information and useful fitting tips.

  • When replacing, the PTFE sealing lip of the new oil seal should not be in the same position as the old oil seal. The diameter of the sealing lip should be smaller than the shaft diameter.
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  • In addition to their electrical properties, marine spark plug wires must also be flexible and durable enough to withstand the constant vibrations and movements experienced by boats