The backup roll chock is one of the key and important parts of the rolling mill.

支承辊轴承座是轧钢机上的关键零件之一，也是重要零件和加工周期长、难度大、精度要求很高的零件。

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The backup roll chock is one of the key and important parts of the rolling mill. It has a long machining duration and the accuracy of the machining is very high.

支承辊轴承座是轧钢机上的关键零件之一，也是重要零件和加工周期长、难度大、精度要求很高的零件。

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