gypsum screw uses

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gypsum screw uses

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gypsum screw uses gypsum screw uses

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  • The key and important parts with tensile strength greater than 1034Mpa should be relieved of stress at 200±10℃ for more than 1 hour before plating, and the carburized or surface hardened parts should be relieved of stress at 140±10℃ for more than 5 hours. The cleaning agent used for cleaning shall have no effect on the binding force of the coating and no corrosion on the substrate. Acid activation Acid activation solution should be able to remove corrosion products and oxide film (skin) on the surface of parts without excessive corrosion on the matrix.

    gypsum screw uses

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    gypsum screw uses gypsum screw uses

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  • gypsum screw uses

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    gypsum screw uses gypsum screw uses

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