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    How to tell difference between Hot-rolled steel and col-rolled steel

    thank you Gokul 43201.
  2. Z

    How to tell difference between Hot-rolled steel and col-rolled steel

    I am assigned a job to check some materials of steel sheet. Is there anyone here can help me to tell it by just looking? I know hot-rolled has rougher surface than cold, but anthing else? Thank you so mcuh!
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