perforated roof sheet

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    perforated roof sheet

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    perforated roof sheet perforated roof sheet

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    perforated roof sheet perforated roof sheet

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  • On the contrary, the denser the ion deposition, the better the quality of zinc layer. Under the condition that the surface zinc layer is dense and bright, the quality of zinc layer per unit area should reach 80g/m2, and the process parameters should be optimized as follows: current density is 16-20A /dm2, mass concentration of zinc sulfate solution is 500g/L, and pH value is 2.5-3.0.

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    perforated roof sheet perforated roof sheet

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  • Post time: 16-02-23

    perforated roof sheet

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    perforated roof sheet perforated roof sheet

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  • The different spacing of the thorn rope is mainly in order to save costs to consider, because if they are too close, then obviously a little waste of resources, but the installation is too sparse will not work. Usually the bottom spacing is about 10cm, and the top is up to 20cm, this is because the higher the place is more difficult to climb over, usually more than one meter without the help of tools it is difficult for ordinary people to climb over, and the bottom because of the relatively tight can prevent personnel from drilling in the past.

    perforated roof sheet

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    perforated roof sheet perforated roof sheet

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    perforated roof sheet perforated roof sheet

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