The mechanical properties and metallographic structures of the friction welded drill rod and the hot upset forged drill rod pipe are compared.
本文叙述了这种钻杆的焊接性，并与采用热镦粗工艺生产的钻杆管体金相组织和机械性能进行了对比。
2
Rod guide, for 8mm round rods. Screwed onto a welded stud or countersunk screw. Lower version (200-3606.3) also as shown in the samples of application.
圆柱杆的连杆导槽，旋在焊接螺钉或埋头螺钉上。应用示例图中还画出了较低型（200-3606.3）
3
The bent stick is in a right-angle bent shape, one end of the bent stick is fixedly connected with the main rod, and the other end is vertically welded with a pin taking board of the bent stick.