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All drill pipe joint German IPSEN multi-atmosphere furnace for processing, and a drill pipe joint phosphor and ultrasonic flaw detection and ultrasonic flaw detection. Drill pipe joints thread and Taijian of precision CNC thread lathe, and then according to API specification to detect sets of individual detectors, thread gauge, in order to ensure the interchangeability of connector thread. The surface thread and Taijian of hot phosphating or plating copper process for conservation treatment. |
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