Geological tube|geological steel pipe_百度文库

Geological pipe|Geological steel pipe_Baidu Encyclopedia|Gunlian Steel Pipe provides geological pipe and geological drilling steel pipe (YB235-70) is a steel pipe used by the geological department for core drilling, it is a kind of bar with hollow section and no joints around it. Steel. 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. Learn more on the geological tube | geological steel pipe _ Baidu Encyclopedia Page: http://baike.baidu.com/view/1540374.htm
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