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1 Introduction In the process of gas pipeline construction, due to the existence of some obstacles, the construction difficulty has increased. In this context, many gas companies have paid more and more attention to the horizontal direction ...
Rotary pile driver, also known as rotary drilling rig, is divided into three types: large, medium and small. It is widely used in construction sites such as housing construction, municipal administration, power grid, electric power, garbage ...
How to deal with the high hardness of weathered rock in rotary drilling rig. The higher the hardness, the higher the drilling resistance. When the restraint is slow, increase the axial pressure to obtain the footage. Under the condition of ...
Construction machinery such as core drilling rigs, water well drilling rigs, engineering drilling rigs, etc. are mostly powered by diesel engines. Due to the harsh operating environment, dust or rain and snow are easily mixed into the fuel ...
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