Petroleum drill pipe joint wooden packaging box based on smooth surface side rolling principle
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANTONG TAIYING NEW MATERIAL SCI & TECH CO LTD
- Publication Date
- 2019-07-05
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Abstract
Description
technical field
[0001] The invention relates to the field of wooden packaging boxes, in particular to a wooden packaging box for oil drill pipe joints based on the principle of side milling smooth surfaces. Background technique
[0002] The oil drill pipe joint is the butt joint with the drill pipe body used in oil and natural gas drilling operations, including internal and external threaded joints. The oil drill pipe friction welding process is quite brittle, so it is generally necessary to pass through the weld seam during processing. Heat treatment is used to improve its performance, thereby improving the quality and life of the joint, and it is easy to wear the joint surface during the joint replacement and adjustment process during use. Therefore, the outer wall surface of the joint is rough, and oil is easy to absorb. Usually, the replaced drill pipe The joints will be stored in wooden packing boxes to improve the convenience of handling. There is such a problem in th...