The original structure of three-rolls piercing-elongating mill is improved. And good results have been achieved.

对原有三辊联合穿轧机结构上存在的问题进行了改进设计，并取得良好效果。

youdao

The original structure of three-rolls piercing-elongating mill is improved. And good results have been achieved.

对原有三辊联合穿轧机结构上存在的问题进行了改进设计，并取得良好效果。

youdao