The briefing covers quality of the shell pierced by the three-high piercing mill, thespecific rolling failures and countermeasures thereagainst.
简要了三辊穿孔所穿毛的质量及该穿孔特有的轧故障和预防措施。
Piercing mill is the most important equipment on the rolling pipe line,and the frame is the nucleal component of the piercing mill.
穿孔是轧的重要设备,而架又是穿孔的核心组成部分。
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And then, the shield itself is a very thick overhead transparency that takes about, maybe, five minutes to hole punch, three hole punch to get it to pop onto these little pegs.
,罩本身是一个非常厚的透明的戴在的顶东西,大概需要五分钟打洞,用三的,把它打在这些小钉子上。
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