... retained austenite残留奥氏体 retained mandrel mill限动芯棒连轧管机 retainer护圈、隔栅、保持器、定位器、止动器、档板、（滚动轴承）保持架 ...
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retained mandrel pipe mill mpm 限动芯棒连轧钢管机组
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Since the mandrel is the most critical thermal deformation operation tool for the retained mandrel pipe mill (MPM) process, its operation efficiency is decisive to steel tube operational cost.
芯棒是限动芯棒连轧钢管机组中最重要的热变形工具，其使用效果决定着钢管生产成本的高低。
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