Ø550×6 (H/V) rough rolling 1#～6#～Ø420×6(H/V) medium rolling 7#～12#～Ø320×6(H/V) finishing rolling 13#～18# unit ...
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Ø550×6 (H/V) rough rolling 1#～6#～Ø420×6(H/V) medium rolling 7#～12#～Ø320×6(H/V) finishing rolling 13#& ...
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