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通过对连铸工艺的试验研究，基本弄清了２０＃(１８０ｍｍ连铸圆坯轧制无缝管产生内折缺陷炼钢工艺方面的原因。
Through the experimental research on the continuous casting process, the basic reason of 20 # (180mm continuous casting round billet rolling seamless tube production inflexion defect steelmaking process) was clarified.