Drill pipe is an important component of the drilling equipment, and malfunction often occurs for its defects, leading to enormous economic losses. it is very important to make researches on non-destructive testing method for spot drill pipe stacked and to develop portable inspection instrument for drill pipe.
Based on investigating testing actuality for drill pipe, character of configuration , shape and familiar position of defects of drill pipe were analysed. Magnetic flux leakage non-d...
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