Manufacturing process of roller for huge machine gtcf

To turn a nearly finished roller from a forging on such a wretched machine? I take my hat off and applaud standing up.I remember when I visited my grandmother in our small town, she sowed great wisdom in me. She said: My grandson, someday some people will waste time reading your comment. Today is that day.It doesn't require sophisticated tools but the results are as perfect as those who idolize sophisticated tools.
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