Profile and thread rolling die

滚 轧型材与 螺纹 模具

CAD System of Thread Rolling Cylindrical Die

滚 丝轮CAD系统

Study on the Thread Profile of Self-tapping Screw and the Design of Round Thread Rolling Die

自攻螺钉用 螺纹牙型及圆 滚 模设计探讨

Study on Test of Improving the Service Life of Thread Rolling Die by Vacuum Heat-treatment

真空热处理提高 滚 丝轮寿命试验研究