This machine is the use of annular-shaped tube on the shortage of cold rolling process equipment.

本机是利用环孔形对荒管进行冷态轧制的工艺设备。

youdao

This machine is the use of annular-shaped tube on the shortage of cold rolling process equipment.

本机是利用环孔形对荒管进行冷态轧制的工艺设备。

youdao