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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.

4. Market Trends and Demand

1. Increased Efficiency By providing a high volume of air, the CFM 185 enhances the efficiency of pneumatic tools, allowing for faster job completion.

Regular replacement of wear-prone parts like drill bits and filters is an indispensable part of maintenance work. Establishing a reasonable replacement schedule based on usage frequency and working conditions can effectively prevent failures, ensuring the continuity and efficiency of operations.

The use of wood mold or lost foam requires the mold to be consistent with the real thing, the appearance is smooth, and the yield and surface finish of the casting are improved, so as to reduce flash, burr and cold separation.

- Construction For foundations, pilings, and site preparation, DTH techniques enable precise hole placement and stability in challenging geological conditions.

Ecologically, spiral foraging promotes responsible harvesting practices. Foragers are encouraged to take only what they need, leaving enough resources for wildlife and for the plants’ own regeneration. The spiral pattern naturally leads foragers away from heavily trafficked areas, allowing plants to flourish undisturbed. By leaving some areas untouched, foragers contribute to the preservation of biodiversity, ensuring that ecosystems remain healthy and resilient.

- Construction For foundations, pilings, and site preparation, DTH techniques enable precise hole placement and stability in challenging geological conditions.

Problem: The pump does not produce water, and the vacuum gauge indicates a high vacuum