Groups » Business & Finance » ANSI B18.2.1 Bolt Blackening Process

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  • ANSI B18.2.1 Bolt Blackening Process Business & Finance
  • Production process of high strength blackened ANSI B18.2.1 bolts

    Mounting rack → Degreasing with boiling alkali solution → Water cleaning → Derusting with hydrochloric acid solution → Water cleaning → Boiling water heating → Oxidation →...  more
    • 289 total views
    • 1 total member
    • Last updated January 12, 2020

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