400 mesh screen

400 mesh screen

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400 mesh screen 400 mesh screen

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  • barbed

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    400 mesh screen 400 mesh screen

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    400 mesh screen 400 mesh screen

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    400 mesh screen 400 mesh screen

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  • galvanized

    400 mesh screen

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    400 mesh screen 400 mesh screen

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  • 5, after the light plating should be carried out light treatment.

    400 mesh screen

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    400 mesh screen 400 mesh screen

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  • galvanized

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    400 mesh screen 400 mesh screen

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  • Post time: 22-02-23

    400 mesh screen

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    400 mesh screen 400 mesh screen

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  • If the zinc coating is good, but when the light comes out in 3% nitric acid, there is a dark shadow on the coating, and the film is brown when passivation occurs, which may be caused by foreign metal impurities such as copper or lead in the galvanized liquid. When there is a problem in the process of galvanizing, check the temperature and current density first, and then measure and adjust the content of zinc and sodium hydroxide in the bath through the analysis of the bath. Whether DPE levels are low can be determined by Hull cell test.

    400 mesh screen

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    400 mesh screen 400 mesh screen

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