Longitudinal crack of drill pipe box joint is brittle fracture at low stress.
钻杆接头的各种纵向开裂属于低应力脆性断裂。
The reason for longitudinal-crack steel leak is analyzed, some measures formed, better result got.
对板坯连铸机产生的纵裂漏钢原因进行了分析，通过制订改进措施，取得了较好的效果。
The reason for longitudinal-crack steel leak is analyzed, some measures formed, better result got.
对板坯连铸机产生的纵裂漏钢原因进行了分析，通过制订改进措施，取得了较好的效果。
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