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        info@sanyoseiki.com
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        Product Care

        街机麻将26合集无限币

        街机麻将26合集无限币

        Passivation is the removal of free iron and other contamination resulting from handling, fabrication, or exposure to contaminated atmosphere.  This is performed by immersing the steel in an oxidant-like nitric acid.

        • Grades with at least 16% chromium (except free machining grade such as 303):   20-45 volume % nitric acid, at 21oC to 32oC for 30 to 60 minutes.
        • Thorough water rinsing must follow all passivating treatment
        • Passivating solution, paste and gel are available commercially.
        • Contact time should be in accordance with Supplier’s recommendation

        街机麻将26合集无限币

        • All stainless steel (except free machining grades): 8-11 volume % of sulfuric at 65 to 80oC for 5 to 45 minutes
        • Grades with at least 16% chromium (except free machining grades): 15-25 volumne of nitric acid + 1-8 volume % hyrdofluoric at 20-60oC for 5 to 30 minutes
        • Thorough rinsing must follow pickling treatments;
        • Free machining grades such as 303, 410 and 416: 10-15 volume % nitric acid + .5-1.5% hydrofluoric acid, at 20-260oC for 5 to 30 minutes;
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