knurl

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

纹滚花螺母采用冷挤压一次成形新工艺 ,成效显著。

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

摘 要： 纹滚花螺母采用冷挤压一次成形新工艺，成效显著。