| 摘要 |
A surface treatment method of the stainless steel pipe is provided to protect the degreasing specialized with the use excise of the drug remarkable, and the application of the passivation process method and blue color from the corrosion and product tries. A surface treatment method of the stainless steel pipe performs the followings: a step for making with the degreasing to the dipping in 60 ~ 70 the maintenance of the pipe the degreasing agent is used; a step for in 21~60, the blue color processing is done by dipping to the mixed acid solution of the hydrofluoric acid and nitric acid; and a step which it is done by dipping to the nitric acid solution in 21~38 in solution with the passivation process.
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