B级钢Ф180 mm连铸坯中心缩孔对Accu-Roll轧制的168 mm×7 mm钢管质量的影响
B급강Ф180 mm련주배중심축공대Accu-Roll알제적168 mm×7 mm강관질량적영향
Effect of Center Line Shrinkage of Ф180 mm Casting Bloom of Steel Grade B on Quality of 168 mm × 7 mm Tube Rolled by Accu-Roll
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