Shandong Liaocheng Kunlian Steel Pipe Co., Ltd. provides geological geologic knowledge geological pipe and geological drilling steel pipe (YB235-70), which is a steel pipe used by the geological department for core drilling. It is a long steel bar with hollow section and no joints around. The steel pipe has a hollow cross-section and is used in a large amount as a pipe for conveying fluids, such as pipes for transporting petroleum, natural gas, coal gas, water, and certain solid materials. According to the use, it can be divided into drill pipe, drill collar, core pipe, casing and sedimentation pipe.
In the practical application of geological tubes and geological drilling pipes:
In order to explore the underground rock structure, groundwater, oil, natural gas and mineral resources, the drilling rig was used to drill wells. Oil and gas exploitation can not be separated from drilling wells. Seamless steel pipe for oil drilling for geological drilling is the main equipment for drilling, mainly including core outer pipe, core inner pipe, casing, drill pipe and so on. Because the drilling pipe is required to work deep into the depth of a few kilometers, the working conditions are extremely complex. The drill pipe is subjected to stress such as pulling, pressing, bending, torsion, and unbalanced impact loads, and it is also subject to mud and rock wear. Therefore, the pipe is required. Must have sufficient strength, hardness, wear resistance and impact toughness, steel with steel "DZ" (Geological Pinyin initials) plus a number to represent the steel yield point, commonly used steel DZ45 45MnB, 50Mn; 40Mn2, 40Mn2Si of DZ50; 40Mn2Mo, 40MnVB of DZ55; 40MnMoB of DZ60; 27MnMoVB of DZ65. Steel pipes are delivered in a heat-treated state.
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