Abstract： There are lots of advantages by cold extrusion for straight knurl nut in a single process.

摘 ： 直纹滚花螺母采用冷压一次成形新工艺，成。

There are lots of advantages by cold extrusion for straight knurl nut in a single process.

直纹滚花螺母采用冷压一次成形新工艺 ,成。