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  • Generally speaking, in dry main gas and indoor use, the thickness of galvanized coating is only 6-12μm, but under poor environmental conditions, the thickness of galvanized coating is 20μm, can reach 50μm. Therefore, environmental factors should be considered when choosing the thickness of galvanized layer. Galvanized layer after passivation treatment, can naturally form a layer of bright, beautiful color passivation film, can obviously improve its protective function, decorative.

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  • Generally speaking steel does not rust easily with chromium content of 10.5%. The higher the content of chromium and nickel, the better the corrosion resistance, such as 304 material nickel content in 8-10%, chromium content of 18-20%, such stainless steel in general is not rust.

    flat head drywall screws

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    flat head drywall screws flat head drywall screws

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    flat head drywall screws flat head drywall screws

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  • flat head drywall screws

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    flat head drywall screws flat head drywall screws

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  • Post time: 17-03-23

    flat head drywall screws

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    flat head drywall screws flat head drywall screws

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    flat head drywall screws flat head drywall screws

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  • Post time: 21-03-23

    flat head drywall screws

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    flat head drywall screws flat head drywall screws

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  • flat head drywall screws

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    flat head drywall screws flat head drywall screws

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