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2 coil nails 2 coil nails

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    2 coil nails 2 coil nails

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    2 coil nails 2 coil nails

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    2 coil nails 2 coil nails

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    2 coil nails 2 coil nails

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  • The management system of the rinsing water after wire pickling should be discharged regularly and regularly, and the rinsing water should be kept clean and low acid value as far as possible. It is more appropriate to control the pH value of 3. The concentration of plating aid should not be too high. The hot plating wire must be added with ammonium chloride and zinc chloride according to the data of laboratory analysis, and the specific gravity of the composite solution is controlled within the range of 50~80g/L. If ammonium chloride or zinc chloride is added without reference to the results of laboratory analysis, it should be criticized and educated, and economic treatment should be given if necessary.

    2 coil nails

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    2 coil nails 2 coil nails

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