120mm drywall screws

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120mm drywall screws

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120mm drywall screws 120mm drywall screws

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  • 120mm drywall screws

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    120mm drywall screws 120mm drywall screws

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  • 120mm drywall screws

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    120mm drywall screws 120mm drywall screws

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  • In strict accordance with the multi-pass small compression rate drawing, the total compression rate is 96.48%, reducing the scraping of zinc layer. The whole wire drawing die is made of tungsten steel die and polycrystalline die. The Angle of the working cone of the wire drawing die is 12° ~ 16°, and the length of the sizing belt is 0.15 of the diameter of the wire, so as to ensure that the deformation of the zinc layer is basically synchronous with the steel wire substrate.

    120mm drywall screws

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    120mm drywall screws 120mm drywall screws

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  • 120mm drywall screws

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    120mm drywall screws 120mm drywall screws

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  • 120mm drywall screws

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    120mm drywall screws 120mm drywall screws

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  • The cooling circulation system uses spray to cool the drawing die, and takes away a lot of heat generated by the drawing machine in high speed drawing in time to ensure the quality of the wire. Control drawing process parameters: drawing speed 10 ~ 12m/s; Winding tension 8 ~ 10N; Measuring length 30km; The mass fraction of lubricant is 3.5 ~ 4.5%; pH value of lubricant 7 ~ 8; Lubricant temperature 30 ~ 40℃.

    120mm drywall screws

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    120mm drywall screws 120mm drywall screws

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