The piercing principle of 2-roll cross-rolling piercer and its application range are discussed.

论述了二辊斜轧锥形辊穿孔机的穿孔原理及其应用范围。

youdao

The piercing principle of 2-roll cross-rolling piercer and its application range are discussed.

论述了二辊斜轧锥形辊穿孔机的穿孔原理及其应用范围。

youdao