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  • Because of the beauty, art, or in specific severe corrosion environment, galvanized layer can be applied to the above paint duplex system, as long as the paint system selection is correct, easy construction, its anticorrosion effect is 1.5~2.5 times better than the single paint and hot dip zinc life combined. With zinc layer to protect iron and steel, in addition to hot dip galvanizing method, there are several other methods, generally widely used, corrosion prevention effect is good and good economic benefits, hot dip galvanizing method.

    large head drywall screws

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    large head drywall screws large head drywall screws

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  • large head drywall screws

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    large head drywall screws large head drywall screws

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  • 1. Water washing: Clean the galvanized steel wire to remove the residual zinc liquid and impurities on the surface.

    large head drywall screws

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    large head drywall screws large head drywall screws

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  • Iron has gray iron, white iron and the above – mentioned combination of gold, each of which has different characteristics, so in industry, according to their different characteristics to transport and selection. For example, in gray iron, its carbon exists in iron ore as graphite, and the crack is often gray, soft and tough, simple filter cutting, which is suitable for casting.

    large head drywall screws

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    large head drywall screws large head drywall screws

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  • The spring steel wire is made of high carbon and high quality carbon structural steel or carbon tool steel wire rod, and its chemical composition, gas content and non-metallic inclusion must be strictly controlled according to the use of the spring. In order to reduce the appearance of shortcomings and decarbonization layer, the consumption of rod billet to stop surface grinding, if necessary, but also stop peeling.

    large head drywall screws

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    large head drywall screws large head drywall screws

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  • The temperature of large roll galvanized wire should be controlled at 30 to 50℃ during electroplating. Because the chloride ions in the bath are very corrosive, quartz glass heaters are generally used. Continuous production does not need heating, but needs cooling. Cooling can be in the groove side row thin wall plastic pipe, through the flow of tap water cooling, can also be used as a titanium pipe temperature control device.

    large head drywall screws

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    large head drywall screws large head drywall screws

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  • The specific design and layout principles are:

    large head drywall screws

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    large head drywall screws large head drywall screws

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