FRP pipe with threaded ends
AssigneesSumitomo Metal Industries, Ltd., Nitto Electric Industrial Co., Ltd.
InventorsKunitoshi Kimura, Tetsuzo Arai, Hiroshi Matsuoka, Toshiharu Nakagawa
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Abstract
An FRP pipe having threaded ends at both ends, such as casing, tubing, and coupling, is disclosed, which is characterized in that metal plating is formed on the surface of at least one of the threaded ends.
Claims20
An oil well FRP pipe having threaded surfaces at both ends thereof, the pipe including means comprising a metal plating formed on the surface of at least one of the threaded ends for preventing bonding of thread compound thereto.
A method of preventing a thread compound from bonding to the thread surface of an FRP pipe having threaded surfaces at opposite ends thereof, comprising the step of applying metal plating on the surface of at least one of the threaded ends.
Dependencies are inferred from the claim text.