potas de perforación de 20 mm


(2) If the shaft is different from the stuffing box axis, it is mainly due to processing errors and incorrect installation. Then pay attention to check whether the installation is correct after installation. If the sealing water ring is badly worn, a new water ring needs to be replaced. If the sealing water pipe is blocked, the sealing water cannot enter the middle of the packing, resulting in rapid wear of the packing, resulting in material leakage, you should dredge the blocked water pipe and keep the sealing water clean.

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The tableau, a term derived from the French word for picture or scene, holds a profound significance in both the art world and societal expression. Whether in the context of a painted canvas, a theatrical performance, or a frozen moment in photography, the tableau serves as a powerful medium for storytelling and reflection. This article explores the multifaceted nature of the tableau, its historical roots, and its impact on contemporary culture.


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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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