| 摘要 |
Process for degreasing the inside of a pipe (9), in which the pipe to be degreased is made to travel in the middle of a stationary electromagnet (2) of toric shape after a degreasing solvent (8) has been introduced into the pipe together with a ferromagnetic mandrel (3) held stationary by the electromagnetic forces and provided with seals (5) so as to form a plug resisting the entrainment of the degreasing solvent by the pipe. Device allowing the process to be used. <IMAGE>
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