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GB/T 15519-2002 English PDF (GBT15519-2002)

GB/T 15519-2002 English PDF (GBT15519-2002)

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GB/T 15519-2002: Chemical conversion coatings -- Black oxide coating on iron and steel -- Specification and test methods
This standard specifies the requirements for black oxide films on iron and steel. Black oxide film can be used to reduce friction between sliding surfaces or bearing surfaces, or for decoration, or to reduce light reflection. This film can be used wherever a black surface is required, with or without additional anticorrosion treatment; even with additional anti-corrosion treatment, it can only achieve very limited corrosion protection under mildly corrosive conditions.

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