One way is to use a hollow billet and then use a fixed or floatingmandrel.
一种方法是使用空心坯,然后使用固定或浮动芯棒。
2
Advantages of employment of semi-floatingmandrel mill to produce small and medium tubes are elaborated.
提出了小型无缝钢管生产机组选用半浮动芯棒连轧工艺的优势。
3
Hardware and software configuration of drive system with position controller, DC drive unit and PLC for a retainer of semi-floatingmandrel mill are analysed.