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Main features of drill pipe
release time:2023-08-25
source: Network
The smooth pipe and the raw steel pipe are made into a drill pipe after a number of processing steps. First, through the treatment of the steel pipe thickening process, the outer surface of the steel pipe is bent inward, and the steel pipe wall is thickened. Next, thread processing is performed and plated with copper to increase strength. A non-destructive quality control inspection is then performed, followed by welding of the steel pipe body joint.
Then, the pipe body undergoes a welding heat treatment and a welding final treatment to eliminate the welding residual stress. Other tests, including hardness test, pressure test and non-destructive test, shall be carried out on the finished steel pipe before the finished drill pipe is painted and packaged.
The length of the drill pipe is generally about nine meters.
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