Piercing mill is the most important equipment on the rolling pipe line,and the frame is the nucleal component of the piercing mill.
穿孔机是轧制钢管的重要设备,而机架又是穿孔机的核部
。
Piercing mill is the most important equipment on the rolling pipe line,and the frame is the nucleal component of the piercing mill.
穿孔机是轧制钢管的重要设备,而机架又是穿孔机的核部
。
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