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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.

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  • Post time: 14-11-22

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    vent mesh screen vent mesh screen

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  • Post time: 17-08-22

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  • barbed

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