black tie wire

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  • 3. Keep the rinse water clean after pickling the steel wire
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  • 6, passivation to remove hydrogen parts should be passivation after the removal of hydrogen, passivation before the application of 1%H2SO4 or 1% hydrochloric acid activation 5~15s. Passivation shall be treated with colored chromate unless otherwise specified in the design drawings.


  • Post time: 06-05-23
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