Drill pipe

API Threaded Connection Drill Pipe

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  • Introduction:

    Bottom cold rolled thread, the release of its residual stress from the root of bottom thread will effectively reduce fatigue when use the drill pipe. The thread has experienced parkerising or copper plating treatment, it will increase its abrasion resistance and reudce thread gluing. Stress disperse grooves on the connection places of API outer thread and inner thread can effectively reduce fatigue frequency, and enhance the adaptation of thread connection.  


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