matériel de concassage.

First, the classification of drilling RIGS:
1, according to the use of the address is not the same, the drill can be divided into underground and open air two categories. According to the presence or absence of traveling structure, the drilling rig can be divided into self-propelled type and non-self-propelled type. There are many open-pit drilling RIGS in China, most of which are self-propelled.
2, according to the aperture is not the same, the drill can be divided into light drilling rig, medium drilling rig, heavy drilling rig.

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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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Exploring these two symbols together leads us to a deeper understanding of the emotional landscape of human life. For instance, a character may start their journey with the hammer in hand, a representation of their ambition and desire to forge their path. However, as they encounter obstacles along the way, they may find themselves metaphorically slipping under the well. This shift illustrates a significant transformation—moving from the external focus of shaping the world to an inward journey of confronting one's fears, doubts, and vulnerabilities.


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