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[技術(shù)]

金屬涂層 鐵或鋼上的銅鎳鉻電鍍層 ISO 1457 - 1974

適用范圍

  This International Standard applies to electroplated coatings of copper plus nickel plus chromium on iron and steel, except for the following :

  —— coatings applied to machine screw threads (with tolerance);

  —— coatings applied to sheet, strip or wire in the unfabricated form, or to coil springs;

  —— coatings applied for other than protective and decorative purposes.

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